Do screening mammograms in women aged 70 and older improve stage at diagnosis or breast cancer–specific mortality?

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Mon, 10/23/2023 - 12:23

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Richman IB, Long JB, Soulos PR, et al. Estimating breast cancer overdiagnosis after screening mammography among older women in the United States. Ann Intern Med. 2023;176:1172-1180. doi:10.7326/M23-0133

EXPERT COMMENTARY

A screening test is performed to detect potential health disorders or diseases in people who do not have any symptoms of disease. The goal of screening is to detect the condition early enough to treat it most effectively, and ultimately to decrease morbidity and mortality related to the disease. Overdiagnosis refers to the finding of a cancer that would not have caused clinical problems during a person’s lifetime.

Current guidelines for the early detection of breast cancer vary considerably, including recommendations for what age to initiate screening, the cadence of screening (annual or biannual), the use of ancillary screening for people with dense breasts, and importantly the upper age limit for which screening is advised. The US Preventive Services Task Force recommends continuing screening to age 74. The American Cancer Society suggests ongoing screening if life expectancy is estimated at more than 10 years, and the American College of Physicians recommends stopping screening at age 75, or younger if life expectancy is less than 10 years. The American College of Obstetricians and Gynecologists states that women at average risk of breast cancer should continue screening mammography until at least age 75.

Overdiagnosis is a difficult concept for clinicians to understand let alone explain to our patients. Recently, Richman and colleagues published the results of their study aimed at estimating overdiagnosis associated with breast cancer screening among older women.1 As Dr. Otis Brawley, former Chief Medical and Scientific Officer of the American Cancer Society and current Distinguished Professor of Oncology and Epidemiology at Johns Hopkins University, states in the editorial that accompanies the study by Richman and colleagues, “Some tumors are not destined to grow, spread, and kill due to their genomics or their microenvironment. A second type of overdiagnosis involves small tumors that do have the potential to grow but will not grow fast enough to bother the patient within their natural lifetime.”2

Although screening mammography in older women results in frequent false positives that require additional imaging as well as biopsies, we have become more aware of the potential of overdiagnosis as an important downside of screening mammography in an elderly population.

Continue to: Details of the study...

 

 

Details of the study

Using the SEER registry to identify breast cancers linked to a 5% sample of Medicare beneficiaries, Richman and colleagues (funded by the National Cancer Institute and based at Yale University) conducted a retrospectivecohort study to estimate the likelihood of overdiagnosis associated with screening mammography among older women over 15 years of follow-up. Specifically, they assessed the difference in cumulative incidence of in situ and invasive breast cancer among women aged 70 years and older without a history of breast cancer when screened in 2002. During the subsequent 3 years, participants either continued screening (screened group) or did not (unscreened group). Women were followed through 2017.

Among almost 55,000 women followed, 88% were White, 6% were Black, and 3% were Hispanic. Mean follow-up was 13.7 years among women aged 70 to 74 years at baseline. For those aged 75 to 84 at baseline, mean follow-up was 10 years, and for those aged 85 years and older, mean follow-up was 5.7 years.

Estimated rates of overdiagnosis. Overall, among women aged 70 to 74 at baseline who were eventually diagnosed with breast cancer, the investigators estimated that 31% of these cancers were overdiagnosed. The corresponding percentage of breast cancers estimated to represent overdiagnosis climbed to 47% for those aged 75 to 84 years at baseline and to 54% for those aged 85 years and older at baseline.

The investigators assessed the impact of greater screening among women with a first-degree relative with a diagnosis of breast cancer and determined that this did not explain their results. With respect to cancer stage, the investigators noted that overdiagnosis was more prevalent among in situ and localized invasive cancers compared with those with regional or distant spread. Of note, the incidence of cancer with regional or distant spread was neither higher nor lower among those who were screened. Finally, the investigators did not observe significant differences in breast cancer–specific mortality by screening status.

The proportion of cancers that were overdiagnosed was particularly high among women with in situ as well as those with localized invasive disease. The investigators pointed out that as many as 90% of women aged 80 and older diagnosed with localized cancer undergo surgery, and almost two-thirds of those older than 70 years have radiation therapy for early-stage disease. In addition to the burdens associated with these treatments for overdiagnosed cancers in older women, simply being diagnosed with breast cancer profoundly affects the health and well-being of women, resulting in anxiety and substantial reductions in quality of life.

The authors also noted that some studies suggest that, among breast cancers diagnosed with screening, chemotherapy is less likely to be employed among older women, a screening benefit that must be weighed against the high likelihood of overdiagnosis. However, this benefit is unlikely to be meaningful for the majority of patients in this study who presented with in situ or early invasive lesions since chemotherapy often is not recommended for such women.

Study strengths and limitations

If screening mammography is effective, the incidence of advanced-stage tumors and breast cancer–specific mortality should be reduced in screened populations. Accordingly, in this large, long-term study using reliable sources of data, the findings that the incidence of advanced-stage disease as well as breast cancer–specific mortality were similar in the screened and unscreened cohorts provides powerful evidence that screening mammography is not effective in older women.3

As the authors pointed out, their findings regarding a high prevalence of overdiagnosis associated with screening mammography in older women are consistent with findings of other studies, some of which used different methodology.

The authors acknowledged that some women in their Medicare cohort who initially continued screening likely stopped screening subsequently, while some who initially did not continue screening might have been screened subsequently. They went on to indicate that if patients were completely adherent with subsequent screening (or not getting screened) the likelihood that cancers among screened women were overdiagnosed would be even higher.

Lead-time bias occurs when screening finds a cancer earlier than that cancer would have been diagnosed because of symptoms. This study followed the cohorts over a long timeframe to reduce the possibility that lead time was inappropriately identified as overdiagnosis. They also observed that, among women aged 85 and older, most cohort members had died by the end of study follow-up; accordingly, lead time is not likely to have explained their findings.

Limitations. The authors acknowledged that miscoding the mammogram type (screening vs diagnostic) could result in higher estimates of overdiagnosis. In their most conservative sensitivity analysis, the overdiagnosis rates could be as low as 15% for women aged 70 to 74, 36% for those aged 75 to 84, and 44% for people aged 85 and older.

Because this was an observational cohort study, unmeasured differences in breast cancer risk and underlying health factors may have been confounders. Specifically, people with severe life-threatening conditions that limited their expected life span may have chosen not to undergo regular screening. Although the authors did attempt to adjust for these factors, there may have been unrecognized confounders. This study was designed to estimate overdiagnosis, and therefore the specific benefits and harms of screening could not be addressed based on the data collected. ●

WHAT THIS EVIDENCE MEANS FOR PRACTICE

The high prevalence of overdiagnosis and lack of a breast cancer–specific mortality benefit among older women who undergo screening mammography is sobering. Clinician recommendations and shared decision making with our patients regarding screening mammography should take into consideration overdiagnosis and the considerable harms associated with overtreatment. Although we may recognize that overdiagnosed cancers are often indolent tumors with a long presymptomatic phase, in older women, even finding a biologically aggressive cancer may represent overdiagnosis if life expectancy is limited.

BARBARA LEVY, MD, MSCP; ANDREW M. KAUNITZ, MD, MSCP.

References
  1. Richman IB, Long JB, Soulos PR, et al. Estimating breast cancer overdiagnosis after screening mammography among older women in the United States. Ann Intern Med. 2023;176:1172-1180. doi:10.7326/M23-0133
  2. Brawley OW, Ramalingam R. Understanding the varying biological behaviors of breast and other types of cancer to avoid overdiagnosis. Ann Intern Med. 2023;176:1273-1274. doi:10.7326/M23-18953
  3. Welch HG, Gorski DH, Albertsen PC. Trends in metastatic breast and prostate cancer—lessons in cancer dynamics.  N Engl J Med. 2015;373:1685-1687. doi:10.1056/NEJM p1510443
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Barbara Levy, MD, MSCP, is Clinical Professor, Obstetrics and Gynecology, George Washington University School of Medicine and Health Sciences, Washington, DC, and Voluntary Clinical Professor, Obstetrics, Gynecology and Reproductive Sciences, UC San Diego School of Medicine. She is a Menopause Society Certified Practitioner and serves on the OBG Management Board of Editors.

Andrew M. Kaunitz, MD, MSCP, is Tenured Professor and Associate Chair, Department of Obstetrics and Gynecology, University of Florida College of Medicine–Jacksonville, and Medical Director and Director of Menopause and Gynecologic Ultrasound Services, UF Health Women’s Specialist Services–Emerson. He is a Menopause Society Certified Practitioner and serves on the OBG Management Board of Editors.

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Barbara Levy, MD, MSCP, is Clinical Professor, Obstetrics and Gynecology, George Washington University School of Medicine and Health Sciences, Washington, DC, and Voluntary Clinical Professor, Obstetrics, Gynecology and Reproductive Sciences, UC San Diego School of Medicine. She is a Menopause Society Certified Practitioner and serves on the OBG Management Board of Editors.

Andrew M. Kaunitz, MD, MSCP, is Tenured Professor and Associate Chair, Department of Obstetrics and Gynecology, University of Florida College of Medicine–Jacksonville, and Medical Director and Director of Menopause and Gynecologic Ultrasound Services, UF Health Women’s Specialist Services–Emerson. He is a Menopause Society Certified Practitioner and serves on the OBG Management Board of Editors.

The authors report no financial relationships relevant to this article.

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Barbara Levy, MD, MSCP, is Clinical Professor, Obstetrics and Gynecology, George Washington University School of Medicine and Health Sciences, Washington, DC, and Voluntary Clinical Professor, Obstetrics, Gynecology and Reproductive Sciences, UC San Diego School of Medicine. She is a Menopause Society Certified Practitioner and serves on the OBG Management Board of Editors.

Andrew M. Kaunitz, MD, MSCP, is Tenured Professor and Associate Chair, Department of Obstetrics and Gynecology, University of Florida College of Medicine–Jacksonville, and Medical Director and Director of Menopause and Gynecologic Ultrasound Services, UF Health Women’s Specialist Services–Emerson. He is a Menopause Society Certified Practitioner and serves on the OBG Management Board of Editors.

The authors report no financial relationships relevant to this article.

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Richman IB, Long JB, Soulos PR, et al. Estimating breast cancer overdiagnosis after screening mammography among older women in the United States. Ann Intern Med. 2023;176:1172-1180. doi:10.7326/M23-0133

EXPERT COMMENTARY

A screening test is performed to detect potential health disorders or diseases in people who do not have any symptoms of disease. The goal of screening is to detect the condition early enough to treat it most effectively, and ultimately to decrease morbidity and mortality related to the disease. Overdiagnosis refers to the finding of a cancer that would not have caused clinical problems during a person’s lifetime.

Current guidelines for the early detection of breast cancer vary considerably, including recommendations for what age to initiate screening, the cadence of screening (annual or biannual), the use of ancillary screening for people with dense breasts, and importantly the upper age limit for which screening is advised. The US Preventive Services Task Force recommends continuing screening to age 74. The American Cancer Society suggests ongoing screening if life expectancy is estimated at more than 10 years, and the American College of Physicians recommends stopping screening at age 75, or younger if life expectancy is less than 10 years. The American College of Obstetricians and Gynecologists states that women at average risk of breast cancer should continue screening mammography until at least age 75.

Overdiagnosis is a difficult concept for clinicians to understand let alone explain to our patients. Recently, Richman and colleagues published the results of their study aimed at estimating overdiagnosis associated with breast cancer screening among older women.1 As Dr. Otis Brawley, former Chief Medical and Scientific Officer of the American Cancer Society and current Distinguished Professor of Oncology and Epidemiology at Johns Hopkins University, states in the editorial that accompanies the study by Richman and colleagues, “Some tumors are not destined to grow, spread, and kill due to their genomics or their microenvironment. A second type of overdiagnosis involves small tumors that do have the potential to grow but will not grow fast enough to bother the patient within their natural lifetime.”2

Although screening mammography in older women results in frequent false positives that require additional imaging as well as biopsies, we have become more aware of the potential of overdiagnosis as an important downside of screening mammography in an elderly population.

Continue to: Details of the study...

 

 

Details of the study

Using the SEER registry to identify breast cancers linked to a 5% sample of Medicare beneficiaries, Richman and colleagues (funded by the National Cancer Institute and based at Yale University) conducted a retrospectivecohort study to estimate the likelihood of overdiagnosis associated with screening mammography among older women over 15 years of follow-up. Specifically, they assessed the difference in cumulative incidence of in situ and invasive breast cancer among women aged 70 years and older without a history of breast cancer when screened in 2002. During the subsequent 3 years, participants either continued screening (screened group) or did not (unscreened group). Women were followed through 2017.

Among almost 55,000 women followed, 88% were White, 6% were Black, and 3% were Hispanic. Mean follow-up was 13.7 years among women aged 70 to 74 years at baseline. For those aged 75 to 84 at baseline, mean follow-up was 10 years, and for those aged 85 years and older, mean follow-up was 5.7 years.

Estimated rates of overdiagnosis. Overall, among women aged 70 to 74 at baseline who were eventually diagnosed with breast cancer, the investigators estimated that 31% of these cancers were overdiagnosed. The corresponding percentage of breast cancers estimated to represent overdiagnosis climbed to 47% for those aged 75 to 84 years at baseline and to 54% for those aged 85 years and older at baseline.

The investigators assessed the impact of greater screening among women with a first-degree relative with a diagnosis of breast cancer and determined that this did not explain their results. With respect to cancer stage, the investigators noted that overdiagnosis was more prevalent among in situ and localized invasive cancers compared with those with regional or distant spread. Of note, the incidence of cancer with regional or distant spread was neither higher nor lower among those who were screened. Finally, the investigators did not observe significant differences in breast cancer–specific mortality by screening status.

The proportion of cancers that were overdiagnosed was particularly high among women with in situ as well as those with localized invasive disease. The investigators pointed out that as many as 90% of women aged 80 and older diagnosed with localized cancer undergo surgery, and almost two-thirds of those older than 70 years have radiation therapy for early-stage disease. In addition to the burdens associated with these treatments for overdiagnosed cancers in older women, simply being diagnosed with breast cancer profoundly affects the health and well-being of women, resulting in anxiety and substantial reductions in quality of life.

The authors also noted that some studies suggest that, among breast cancers diagnosed with screening, chemotherapy is less likely to be employed among older women, a screening benefit that must be weighed against the high likelihood of overdiagnosis. However, this benefit is unlikely to be meaningful for the majority of patients in this study who presented with in situ or early invasive lesions since chemotherapy often is not recommended for such women.

Study strengths and limitations

If screening mammography is effective, the incidence of advanced-stage tumors and breast cancer–specific mortality should be reduced in screened populations. Accordingly, in this large, long-term study using reliable sources of data, the findings that the incidence of advanced-stage disease as well as breast cancer–specific mortality were similar in the screened and unscreened cohorts provides powerful evidence that screening mammography is not effective in older women.3

As the authors pointed out, their findings regarding a high prevalence of overdiagnosis associated with screening mammography in older women are consistent with findings of other studies, some of which used different methodology.

The authors acknowledged that some women in their Medicare cohort who initially continued screening likely stopped screening subsequently, while some who initially did not continue screening might have been screened subsequently. They went on to indicate that if patients were completely adherent with subsequent screening (or not getting screened) the likelihood that cancers among screened women were overdiagnosed would be even higher.

Lead-time bias occurs when screening finds a cancer earlier than that cancer would have been diagnosed because of symptoms. This study followed the cohorts over a long timeframe to reduce the possibility that lead time was inappropriately identified as overdiagnosis. They also observed that, among women aged 85 and older, most cohort members had died by the end of study follow-up; accordingly, lead time is not likely to have explained their findings.

Limitations. The authors acknowledged that miscoding the mammogram type (screening vs diagnostic) could result in higher estimates of overdiagnosis. In their most conservative sensitivity analysis, the overdiagnosis rates could be as low as 15% for women aged 70 to 74, 36% for those aged 75 to 84, and 44% for people aged 85 and older.

Because this was an observational cohort study, unmeasured differences in breast cancer risk and underlying health factors may have been confounders. Specifically, people with severe life-threatening conditions that limited their expected life span may have chosen not to undergo regular screening. Although the authors did attempt to adjust for these factors, there may have been unrecognized confounders. This study was designed to estimate overdiagnosis, and therefore the specific benefits and harms of screening could not be addressed based on the data collected. ●

WHAT THIS EVIDENCE MEANS FOR PRACTICE

The high prevalence of overdiagnosis and lack of a breast cancer–specific mortality benefit among older women who undergo screening mammography is sobering. Clinician recommendations and shared decision making with our patients regarding screening mammography should take into consideration overdiagnosis and the considerable harms associated with overtreatment. Although we may recognize that overdiagnosed cancers are often indolent tumors with a long presymptomatic phase, in older women, even finding a biologically aggressive cancer may represent overdiagnosis if life expectancy is limited.

BARBARA LEVY, MD, MSCP; ANDREW M. KAUNITZ, MD, MSCP.

PHOTO:PEAKSTOCK/SHUTTERSTOCK

 

Richman IB, Long JB, Soulos PR, et al. Estimating breast cancer overdiagnosis after screening mammography among older women in the United States. Ann Intern Med. 2023;176:1172-1180. doi:10.7326/M23-0133

EXPERT COMMENTARY

A screening test is performed to detect potential health disorders or diseases in people who do not have any symptoms of disease. The goal of screening is to detect the condition early enough to treat it most effectively, and ultimately to decrease morbidity and mortality related to the disease. Overdiagnosis refers to the finding of a cancer that would not have caused clinical problems during a person’s lifetime.

Current guidelines for the early detection of breast cancer vary considerably, including recommendations for what age to initiate screening, the cadence of screening (annual or biannual), the use of ancillary screening for people with dense breasts, and importantly the upper age limit for which screening is advised. The US Preventive Services Task Force recommends continuing screening to age 74. The American Cancer Society suggests ongoing screening if life expectancy is estimated at more than 10 years, and the American College of Physicians recommends stopping screening at age 75, or younger if life expectancy is less than 10 years. The American College of Obstetricians and Gynecologists states that women at average risk of breast cancer should continue screening mammography until at least age 75.

Overdiagnosis is a difficult concept for clinicians to understand let alone explain to our patients. Recently, Richman and colleagues published the results of their study aimed at estimating overdiagnosis associated with breast cancer screening among older women.1 As Dr. Otis Brawley, former Chief Medical and Scientific Officer of the American Cancer Society and current Distinguished Professor of Oncology and Epidemiology at Johns Hopkins University, states in the editorial that accompanies the study by Richman and colleagues, “Some tumors are not destined to grow, spread, and kill due to their genomics or their microenvironment. A second type of overdiagnosis involves small tumors that do have the potential to grow but will not grow fast enough to bother the patient within their natural lifetime.”2

Although screening mammography in older women results in frequent false positives that require additional imaging as well as biopsies, we have become more aware of the potential of overdiagnosis as an important downside of screening mammography in an elderly population.

Continue to: Details of the study...

 

 

Details of the study

Using the SEER registry to identify breast cancers linked to a 5% sample of Medicare beneficiaries, Richman and colleagues (funded by the National Cancer Institute and based at Yale University) conducted a retrospectivecohort study to estimate the likelihood of overdiagnosis associated with screening mammography among older women over 15 years of follow-up. Specifically, they assessed the difference in cumulative incidence of in situ and invasive breast cancer among women aged 70 years and older without a history of breast cancer when screened in 2002. During the subsequent 3 years, participants either continued screening (screened group) or did not (unscreened group). Women were followed through 2017.

Among almost 55,000 women followed, 88% were White, 6% were Black, and 3% were Hispanic. Mean follow-up was 13.7 years among women aged 70 to 74 years at baseline. For those aged 75 to 84 at baseline, mean follow-up was 10 years, and for those aged 85 years and older, mean follow-up was 5.7 years.

Estimated rates of overdiagnosis. Overall, among women aged 70 to 74 at baseline who were eventually diagnosed with breast cancer, the investigators estimated that 31% of these cancers were overdiagnosed. The corresponding percentage of breast cancers estimated to represent overdiagnosis climbed to 47% for those aged 75 to 84 years at baseline and to 54% for those aged 85 years and older at baseline.

The investigators assessed the impact of greater screening among women with a first-degree relative with a diagnosis of breast cancer and determined that this did not explain their results. With respect to cancer stage, the investigators noted that overdiagnosis was more prevalent among in situ and localized invasive cancers compared with those with regional or distant spread. Of note, the incidence of cancer with regional or distant spread was neither higher nor lower among those who were screened. Finally, the investigators did not observe significant differences in breast cancer–specific mortality by screening status.

The proportion of cancers that were overdiagnosed was particularly high among women with in situ as well as those with localized invasive disease. The investigators pointed out that as many as 90% of women aged 80 and older diagnosed with localized cancer undergo surgery, and almost two-thirds of those older than 70 years have radiation therapy for early-stage disease. In addition to the burdens associated with these treatments for overdiagnosed cancers in older women, simply being diagnosed with breast cancer profoundly affects the health and well-being of women, resulting in anxiety and substantial reductions in quality of life.

The authors also noted that some studies suggest that, among breast cancers diagnosed with screening, chemotherapy is less likely to be employed among older women, a screening benefit that must be weighed against the high likelihood of overdiagnosis. However, this benefit is unlikely to be meaningful for the majority of patients in this study who presented with in situ or early invasive lesions since chemotherapy often is not recommended for such women.

Study strengths and limitations

If screening mammography is effective, the incidence of advanced-stage tumors and breast cancer–specific mortality should be reduced in screened populations. Accordingly, in this large, long-term study using reliable sources of data, the findings that the incidence of advanced-stage disease as well as breast cancer–specific mortality were similar in the screened and unscreened cohorts provides powerful evidence that screening mammography is not effective in older women.3

As the authors pointed out, their findings regarding a high prevalence of overdiagnosis associated with screening mammography in older women are consistent with findings of other studies, some of which used different methodology.

The authors acknowledged that some women in their Medicare cohort who initially continued screening likely stopped screening subsequently, while some who initially did not continue screening might have been screened subsequently. They went on to indicate that if patients were completely adherent with subsequent screening (or not getting screened) the likelihood that cancers among screened women were overdiagnosed would be even higher.

Lead-time bias occurs when screening finds a cancer earlier than that cancer would have been diagnosed because of symptoms. This study followed the cohorts over a long timeframe to reduce the possibility that lead time was inappropriately identified as overdiagnosis. They also observed that, among women aged 85 and older, most cohort members had died by the end of study follow-up; accordingly, lead time is not likely to have explained their findings.

Limitations. The authors acknowledged that miscoding the mammogram type (screening vs diagnostic) could result in higher estimates of overdiagnosis. In their most conservative sensitivity analysis, the overdiagnosis rates could be as low as 15% for women aged 70 to 74, 36% for those aged 75 to 84, and 44% for people aged 85 and older.

Because this was an observational cohort study, unmeasured differences in breast cancer risk and underlying health factors may have been confounders. Specifically, people with severe life-threatening conditions that limited their expected life span may have chosen not to undergo regular screening. Although the authors did attempt to adjust for these factors, there may have been unrecognized confounders. This study was designed to estimate overdiagnosis, and therefore the specific benefits and harms of screening could not be addressed based on the data collected. ●

WHAT THIS EVIDENCE MEANS FOR PRACTICE

The high prevalence of overdiagnosis and lack of a breast cancer–specific mortality benefit among older women who undergo screening mammography is sobering. Clinician recommendations and shared decision making with our patients regarding screening mammography should take into consideration overdiagnosis and the considerable harms associated with overtreatment. Although we may recognize that overdiagnosed cancers are often indolent tumors with a long presymptomatic phase, in older women, even finding a biologically aggressive cancer may represent overdiagnosis if life expectancy is limited.

BARBARA LEVY, MD, MSCP; ANDREW M. KAUNITZ, MD, MSCP.

References
  1. Richman IB, Long JB, Soulos PR, et al. Estimating breast cancer overdiagnosis after screening mammography among older women in the United States. Ann Intern Med. 2023;176:1172-1180. doi:10.7326/M23-0133
  2. Brawley OW, Ramalingam R. Understanding the varying biological behaviors of breast and other types of cancer to avoid overdiagnosis. Ann Intern Med. 2023;176:1273-1274. doi:10.7326/M23-18953
  3. Welch HG, Gorski DH, Albertsen PC. Trends in metastatic breast and prostate cancer—lessons in cancer dynamics.  N Engl J Med. 2015;373:1685-1687. doi:10.1056/NEJM p1510443
References
  1. Richman IB, Long JB, Soulos PR, et al. Estimating breast cancer overdiagnosis after screening mammography among older women in the United States. Ann Intern Med. 2023;176:1172-1180. doi:10.7326/M23-0133
  2. Brawley OW, Ramalingam R. Understanding the varying biological behaviors of breast and other types of cancer to avoid overdiagnosis. Ann Intern Med. 2023;176:1273-1274. doi:10.7326/M23-18953
  3. Welch HG, Gorski DH, Albertsen PC. Trends in metastatic breast and prostate cancer—lessons in cancer dynamics.  N Engl J Med. 2015;373:1685-1687. doi:10.1056/NEJM p1510443
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Making time to care for patients with diabetes

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Can busy primary care offices continue to care for patients with diabetes? No one would argue that it is involved and takes effort, and health care providers are bankrupt when it comes to sparing additional time for this chronic disease. With roughly 37 million people living with diabetes and 96 million with prediabetes or early type 2 diabetes, and just over 8,000 practicing endocrinologists in the United States, we all need to make time especially in primary care to provide insight and holistic care. With limited time and budget, how do we do this?

First, decide to be involved in caring for patients with diabetes. Diabetes is best managed by interprofessional care teams, so you’re not going it alone. These teams may include physicians; pharmacists; physician assistants; advanced practice nurses; registered nurses; certified diabetes care and education specialists (CDCES); dietitians; and other professionals such as social workers, behavioral health professionals, medical assistants, and community health workers. Know which professionals are available to serve on your team, either within your clinic or as a consultant, and reach out to them to share the care and ease the burden. Remember to refer to these professionals to reinforce the diabetes intervention message to the patient.

Second, incorporate “diabetes only” appointments into your schedule, allowing time to focus on current comprehensive diabetes treatment goals, barriers/inertia for care. Remember to have short-interval follow-up as needed to keep that patient engaged to achieve their targets. Instruct your office staff to create diabetes appointment templates and reminders to patients to bring diabetes-related technologies, medication lists, and diabetes questions to the appointment. When I implemented this change, my patients welcomed the focus on their diabetes health, and they knew we were prioritizing this disease that they have for a lifetime. These appointments did not take away from their other conditions; rather, they often reminded me to stay focused on their diabetes and associated coconditions. 

Taking the time to establish efficient workflows before implementing diabetes care saves countless hours later and immediately maximizes health care provider–patient interactions. Assign specific staff duties and expectations related to diabetes appointments, such as downloading diabetes technology, medication reconciliation, laboratory data, point-of-care hemoglobin A1c, basic foot exam, and patient goals for diabetes care. This allows the prescriber to focus on the glycemic, cardiologic, renal, and metabolic goals and overcome the therapeutic inertia that plagues us all.

Incorporating diabetes-related technology into clinical practice can be a significant time-saver but requires initial onboarding. Set aside a few hours to create a technology clinic flow, and designate at least one team member to be responsible for obtaining patient data before, during, or after encounters. If possible, obtaining data ahead of the visit will enhance efficiency, allowing for meaningful discussion of blood glucose and lifestyle patterns. Diabetes technology reveals the gaps in care and enhances our ability to identify the areas where glycemic intervention is needed. In addition, it reveals the impact of food choices, activity level, stress, and medication adherence to the person living with diabetes. 

Finally, be proactive about therapeutic inertia. This is defined as a prescribers’ failure to intensify or deintensify a patient’s treatment when appropriate to do so. Causes of therapeutic inertia can be placed at the primary care physician level, including time constraints or inexperience in treating diabetes; the patient level, such as concerns about side effects or new treatment regimens; or a systemic level, such as availability of medications or their costs. Be real with yourself: We all have inertia and can identify areas to overcome. Never let inertia be traced back to you.

Not all inertia lives with the health care provider. Patients bring apprehension and concerns, have questions, and just want to share the frustrations associated with living their best life with the disease. Don’t assume that you know what your patients’ treatment barriers are; ask them. If you don’t have an answer, then note it and come up with one by the next follow-up. Remember that this is a chronic disease – a marathon, not a sprint. You don’t have to solve everything at one appointment; rather, keep the momentum going.

Let’s put this into clinical practice. For the next patient with diabetes who comes into your office, discuss with them your intention to prioritize their diabetes by having an appointment set aside to specifically focus on their individual goals and targets for their disease. Have the patient list any barriers and treatment goals they would like to review; flag your schedule to indicate it is a diabetes-only visit; and orient your staff to reconcile diabetes medications and record the patient’s last eye exam, urine albumin-to-creatinine ratio, A1c result, and blood glucose data. During this encounter, identify the patient’s personal targets for control, examine their feet, and review or order necessary laboratory metrics. Explore the patient-reported barriers and make inroads to remove or alleviate these. Advance treatment intervention, and schedule follow-up: every 4-6 weeks if the A1c is > 9%, every 2 months if it’s 7% to < 9%, and every 3-6 months if it’s < 7%. Utilize team diabetes care, such as CDCES referrals, dietitians, online resources, and community members, to help reinforce care and enhance engagement. 

We need to take steps in our clinical practice to make the necessary space to accommodate this pervasive disease affecting nearly one-third of our population. Take a moment to look up and determine what needs to be in place so that you can take care of the people in your practice with diabetes. Laying the groundwork for implementing diabetes-only appointments can be time-consuming, but establishing consistent procedures, developing efficient workflows, and clearly defining roles and responsibilities is well worth the effort. This solid foundation equips the office, health care providers, and staff to care for persons with diabetes and will be invaluable to ensure that time for this care is available in the day-to-day clinical practice.

A version of this article first appeared on Medscape.com.

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Can busy primary care offices continue to care for patients with diabetes? No one would argue that it is involved and takes effort, and health care providers are bankrupt when it comes to sparing additional time for this chronic disease. With roughly 37 million people living with diabetes and 96 million with prediabetes or early type 2 diabetes, and just over 8,000 practicing endocrinologists in the United States, we all need to make time especially in primary care to provide insight and holistic care. With limited time and budget, how do we do this?

First, decide to be involved in caring for patients with diabetes. Diabetes is best managed by interprofessional care teams, so you’re not going it alone. These teams may include physicians; pharmacists; physician assistants; advanced practice nurses; registered nurses; certified diabetes care and education specialists (CDCES); dietitians; and other professionals such as social workers, behavioral health professionals, medical assistants, and community health workers. Know which professionals are available to serve on your team, either within your clinic or as a consultant, and reach out to them to share the care and ease the burden. Remember to refer to these professionals to reinforce the diabetes intervention message to the patient.

Second, incorporate “diabetes only” appointments into your schedule, allowing time to focus on current comprehensive diabetes treatment goals, barriers/inertia for care. Remember to have short-interval follow-up as needed to keep that patient engaged to achieve their targets. Instruct your office staff to create diabetes appointment templates and reminders to patients to bring diabetes-related technologies, medication lists, and diabetes questions to the appointment. When I implemented this change, my patients welcomed the focus on their diabetes health, and they knew we were prioritizing this disease that they have for a lifetime. These appointments did not take away from their other conditions; rather, they often reminded me to stay focused on their diabetes and associated coconditions. 

Taking the time to establish efficient workflows before implementing diabetes care saves countless hours later and immediately maximizes health care provider–patient interactions. Assign specific staff duties and expectations related to diabetes appointments, such as downloading diabetes technology, medication reconciliation, laboratory data, point-of-care hemoglobin A1c, basic foot exam, and patient goals for diabetes care. This allows the prescriber to focus on the glycemic, cardiologic, renal, and metabolic goals and overcome the therapeutic inertia that plagues us all.

Incorporating diabetes-related technology into clinical practice can be a significant time-saver but requires initial onboarding. Set aside a few hours to create a technology clinic flow, and designate at least one team member to be responsible for obtaining patient data before, during, or after encounters. If possible, obtaining data ahead of the visit will enhance efficiency, allowing for meaningful discussion of blood glucose and lifestyle patterns. Diabetes technology reveals the gaps in care and enhances our ability to identify the areas where glycemic intervention is needed. In addition, it reveals the impact of food choices, activity level, stress, and medication adherence to the person living with diabetes. 

Finally, be proactive about therapeutic inertia. This is defined as a prescribers’ failure to intensify or deintensify a patient’s treatment when appropriate to do so. Causes of therapeutic inertia can be placed at the primary care physician level, including time constraints or inexperience in treating diabetes; the patient level, such as concerns about side effects or new treatment regimens; or a systemic level, such as availability of medications or their costs. Be real with yourself: We all have inertia and can identify areas to overcome. Never let inertia be traced back to you.

Not all inertia lives with the health care provider. Patients bring apprehension and concerns, have questions, and just want to share the frustrations associated with living their best life with the disease. Don’t assume that you know what your patients’ treatment barriers are; ask them. If you don’t have an answer, then note it and come up with one by the next follow-up. Remember that this is a chronic disease – a marathon, not a sprint. You don’t have to solve everything at one appointment; rather, keep the momentum going.

Let’s put this into clinical practice. For the next patient with diabetes who comes into your office, discuss with them your intention to prioritize their diabetes by having an appointment set aside to specifically focus on their individual goals and targets for their disease. Have the patient list any barriers and treatment goals they would like to review; flag your schedule to indicate it is a diabetes-only visit; and orient your staff to reconcile diabetes medications and record the patient’s last eye exam, urine albumin-to-creatinine ratio, A1c result, and blood glucose data. During this encounter, identify the patient’s personal targets for control, examine their feet, and review or order necessary laboratory metrics. Explore the patient-reported barriers and make inroads to remove or alleviate these. Advance treatment intervention, and schedule follow-up: every 4-6 weeks if the A1c is > 9%, every 2 months if it’s 7% to < 9%, and every 3-6 months if it’s < 7%. Utilize team diabetes care, such as CDCES referrals, dietitians, online resources, and community members, to help reinforce care and enhance engagement. 

We need to take steps in our clinical practice to make the necessary space to accommodate this pervasive disease affecting nearly one-third of our population. Take a moment to look up and determine what needs to be in place so that you can take care of the people in your practice with diabetes. Laying the groundwork for implementing diabetes-only appointments can be time-consuming, but establishing consistent procedures, developing efficient workflows, and clearly defining roles and responsibilities is well worth the effort. This solid foundation equips the office, health care providers, and staff to care for persons with diabetes and will be invaluable to ensure that time for this care is available in the day-to-day clinical practice.

A version of this article first appeared on Medscape.com.

Can busy primary care offices continue to care for patients with diabetes? No one would argue that it is involved and takes effort, and health care providers are bankrupt when it comes to sparing additional time for this chronic disease. With roughly 37 million people living with diabetes and 96 million with prediabetes or early type 2 diabetes, and just over 8,000 practicing endocrinologists in the United States, we all need to make time especially in primary care to provide insight and holistic care. With limited time and budget, how do we do this?

First, decide to be involved in caring for patients with diabetes. Diabetes is best managed by interprofessional care teams, so you’re not going it alone. These teams may include physicians; pharmacists; physician assistants; advanced practice nurses; registered nurses; certified diabetes care and education specialists (CDCES); dietitians; and other professionals such as social workers, behavioral health professionals, medical assistants, and community health workers. Know which professionals are available to serve on your team, either within your clinic or as a consultant, and reach out to them to share the care and ease the burden. Remember to refer to these professionals to reinforce the diabetes intervention message to the patient.

Second, incorporate “diabetes only” appointments into your schedule, allowing time to focus on current comprehensive diabetes treatment goals, barriers/inertia for care. Remember to have short-interval follow-up as needed to keep that patient engaged to achieve their targets. Instruct your office staff to create diabetes appointment templates and reminders to patients to bring diabetes-related technologies, medication lists, and diabetes questions to the appointment. When I implemented this change, my patients welcomed the focus on their diabetes health, and they knew we were prioritizing this disease that they have for a lifetime. These appointments did not take away from their other conditions; rather, they often reminded me to stay focused on their diabetes and associated coconditions. 

Taking the time to establish efficient workflows before implementing diabetes care saves countless hours later and immediately maximizes health care provider–patient interactions. Assign specific staff duties and expectations related to diabetes appointments, such as downloading diabetes technology, medication reconciliation, laboratory data, point-of-care hemoglobin A1c, basic foot exam, and patient goals for diabetes care. This allows the prescriber to focus on the glycemic, cardiologic, renal, and metabolic goals and overcome the therapeutic inertia that plagues us all.

Incorporating diabetes-related technology into clinical practice can be a significant time-saver but requires initial onboarding. Set aside a few hours to create a technology clinic flow, and designate at least one team member to be responsible for obtaining patient data before, during, or after encounters. If possible, obtaining data ahead of the visit will enhance efficiency, allowing for meaningful discussion of blood glucose and lifestyle patterns. Diabetes technology reveals the gaps in care and enhances our ability to identify the areas where glycemic intervention is needed. In addition, it reveals the impact of food choices, activity level, stress, and medication adherence to the person living with diabetes. 

Finally, be proactive about therapeutic inertia. This is defined as a prescribers’ failure to intensify or deintensify a patient’s treatment when appropriate to do so. Causes of therapeutic inertia can be placed at the primary care physician level, including time constraints or inexperience in treating diabetes; the patient level, such as concerns about side effects or new treatment regimens; or a systemic level, such as availability of medications or their costs. Be real with yourself: We all have inertia and can identify areas to overcome. Never let inertia be traced back to you.

Not all inertia lives with the health care provider. Patients bring apprehension and concerns, have questions, and just want to share the frustrations associated with living their best life with the disease. Don’t assume that you know what your patients’ treatment barriers are; ask them. If you don’t have an answer, then note it and come up with one by the next follow-up. Remember that this is a chronic disease – a marathon, not a sprint. You don’t have to solve everything at one appointment; rather, keep the momentum going.

Let’s put this into clinical practice. For the next patient with diabetes who comes into your office, discuss with them your intention to prioritize their diabetes by having an appointment set aside to specifically focus on their individual goals and targets for their disease. Have the patient list any barriers and treatment goals they would like to review; flag your schedule to indicate it is a diabetes-only visit; and orient your staff to reconcile diabetes medications and record the patient’s last eye exam, urine albumin-to-creatinine ratio, A1c result, and blood glucose data. During this encounter, identify the patient’s personal targets for control, examine their feet, and review or order necessary laboratory metrics. Explore the patient-reported barriers and make inroads to remove or alleviate these. Advance treatment intervention, and schedule follow-up: every 4-6 weeks if the A1c is > 9%, every 2 months if it’s 7% to < 9%, and every 3-6 months if it’s < 7%. Utilize team diabetes care, such as CDCES referrals, dietitians, online resources, and community members, to help reinforce care and enhance engagement. 

We need to take steps in our clinical practice to make the necessary space to accommodate this pervasive disease affecting nearly one-third of our population. Take a moment to look up and determine what needs to be in place so that you can take care of the people in your practice with diabetes. Laying the groundwork for implementing diabetes-only appointments can be time-consuming, but establishing consistent procedures, developing efficient workflows, and clearly defining roles and responsibilities is well worth the effort. This solid foundation equips the office, health care providers, and staff to care for persons with diabetes and will be invaluable to ensure that time for this care is available in the day-to-day clinical practice.

A version of this article first appeared on Medscape.com.

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Are migraine preventives underused in young adults?

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Prescribing patterns of preventive migraine medications for young adults do not appear to vary based on whether the provider is a pediatric or adult neurologist, but researchers say preventive medications may be underused for this group, according to recent research published in the journal Headache.

“Approximately two-fifths of young adults with migraine were prescribed preventive medications, and this did not differ between pediatric and adult neurologists,” Hannah F. J. Shapiro MD, of the department of neurology at the University of California, San Francisco, and the UCSF Benioff Children’s Hospitals, and colleagues wrote in their study. “This finding suggests that pediatric neurologists are providing comparable care to adult neurologists for young adults with migraine; however, this may represent the underuse of preventive medications in this patient population.”

Dr. Hannah F. J. Shapiro

Dr. Shapiro and colleagues conducted a retrospective study of 767 patients (mean age 20.3 years) at Mass General Brigham Hospital in Boston between 2017 and 2021 who received care from a pediatric or adult neurologist for episodic migraine. The majority of patients in the study were white (72.2%), non-Hispanic (82.1%) women (80.3%) with episodic migraine (72.8%), some of whom experienced a psychiatric comorbidity (12.7%), and had a 3.88 mean clinic visits for migraine. Researchers assessed prescription of migraine preventive medication as a primary outcome, with a secondary outcome of comparing the rate of migraine preventive prescriptions written by pediatric and adult neurologists.

Overall, 290 patients (37.8%) received care from a pediatric neurologist, and 131 of those 290 patients (45.2%) received preventive medications (95% confidence interval, 39.5%-51.0%). The remaining 477 patients received care from an adult neurologist; of these, 206 patients (43.2%) received preventive medications (95% CI, 39.0%-47.7%; P = .591). The most common preventive medication prescribed was topiramate, which was prescribed in 19.1% of cases by adult neurologists and 15.2% of cases by pediatric neurologists. Other preventive medications included tricyclic antidepressants such as amitriptyline and nortriptyline; pediatric neurologists prescribed amitriptyline more often than adult neurologists (14.5% vs. 5.5%; P <  .001), and adult neurologists prescribed nortriptyline more often than pediatric neurologists (12.8% vs. 2.4%; P < .001).

Dr. Shapiro and colleagues performed a mixed effects logistic regression analysis of potential confounders, and found no significant association between clinician specialty and use of preventive medication (adjusted odds ratio, 1.20; 95% CI, 0.62­-2.31), while factors such as female sex (aOR, 1.69; 95% CI, 1.07-2.66) and number of visits (aOR, 1.64; 95% CI, 1.49-1.80) carried associations with preventive medication use.

The finding that pediatric and adult neurologists use similar preventive medications is a positive one because “patients who continue care into adulthood with a pediatric neurologist should receive comparable care to the care they would receive with an adult neurologist,” Dr. Shapiro and colleagues said. “It is even more pertinent now for pediatric neurologists to have comfort prescribing preventive medication to young adults, as the newer calcitonin gene-related peptide (CGRP) pathway antagonists are currently only FDA approved for use in patients aged 18 years or older.”
 

 

 

Roadblocks may prevent adoption

M. Cristina Victorio, MD, a pediatric neurologist and director of the headache program at Akron (Ohio) Children’s, said in an interview that the study is well-designed, but the results cannot be generalized as the study is retrospective, was conducted at a single institution, and data about nutraceuticals and drug-free neuromodulation devices were excluded from the analysis.

Dr. M. Cristina Victorio

Another aspect of the study to consider is that episodic migraine, defined as between 0 and 14 migraine days per month, comprised most of the diagnoses in this study, while preventive medication is usually considered in patients with migraines occurring at least 6 days per month. “[I]f migraine is only once every other month or once a month, preventive treatment may not be recommended,” she said.

There is also the element of patient preference, which is “difficult to obtain” in a retrospective study, she noted.

Citing the authors’ comments about pediatric neurologists’ comfortability prescribing preventive medications, including CGRP antagonists, Dr. Victorio said she offers CGRP antagonists to “young adult patients who have failed at least two of the guideline-recommended preventive medications.”

However, pediatric neurologists may encounter roadblocks to prescribing these medications. “A big challenge is access, as it requires prior authorization as well as writing a letter of appeal or medical necessity, which can be a nuisance for clinicians who are already inundated with clinical responsibilities,” she said.
 

More education is needed

“As a pediatric headache specialist and knowing the results of this study, my colleagues and I have a role in educating all clinicians as well as trainees on headache management to improve and provide optimal care for young adult patients with migraine,” Dr. Victorio said.

In her experience, more clinic visits usually mean a need for preventative medication, and psychiatric morbidities are common. “I differ in the sense that as a headache specialist I am comfortable offering various preventive treatment options when indicated, so I do not believe I am underutilizing,” she said.

Dr. Victorio said she prescribes topiramate, amitriptyline, and propranolol as migraine preventatives for adolescents and young adults, but recommends cyproheptadine for younger children “due to lesser side effects, tolerability, and convenience of formulation (both liquid and tablet forms are available), which can be challenging for younger children who are unable to swallow pills.”

“Cognizant that there are patients who are reluctant to take daily prescription medication and that consideration for preventive treatment includes patient’s preference, I include the use of nutraceuticals and drug-free neuromodulation devices when discussing preventive treatment options,” she added, noting that children and adolescents “[m]ore often than not” prefer nutraceuticals like magnesium and vitamin B2.

“I think the bottom line is that all clinicians managing young adults with migraine should know when to consider starting preventive migraine medication,” Dr. Victorio said. “Not offering preventive treatment to young adults specifically for those who have frequent migraine attacks, or those who have severe migraine despite adequate acute treatment, or those with significant adverse reactions to acute medications will only put these patients at risk to progression to chronic migraine (meaning having migraine more often than not – at least 15 days per month), and increases headache-related disability and reduces quality of life.”

The authors report no relevant financial disclosures. This study was supported by Harvard University and an award from the National Institutes of Health. Dr. Victorio reports being on the advisory board for Theranica Bio-electronics, has received honorarium serving as an author of the Merck Manual, and is involved in industry-sponsored clinical trials through Akron Children’s Hospital.

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Prescribing patterns of preventive migraine medications for young adults do not appear to vary based on whether the provider is a pediatric or adult neurologist, but researchers say preventive medications may be underused for this group, according to recent research published in the journal Headache.

“Approximately two-fifths of young adults with migraine were prescribed preventive medications, and this did not differ between pediatric and adult neurologists,” Hannah F. J. Shapiro MD, of the department of neurology at the University of California, San Francisco, and the UCSF Benioff Children’s Hospitals, and colleagues wrote in their study. “This finding suggests that pediatric neurologists are providing comparable care to adult neurologists for young adults with migraine; however, this may represent the underuse of preventive medications in this patient population.”

Dr. Hannah F. J. Shapiro

Dr. Shapiro and colleagues conducted a retrospective study of 767 patients (mean age 20.3 years) at Mass General Brigham Hospital in Boston between 2017 and 2021 who received care from a pediatric or adult neurologist for episodic migraine. The majority of patients in the study were white (72.2%), non-Hispanic (82.1%) women (80.3%) with episodic migraine (72.8%), some of whom experienced a psychiatric comorbidity (12.7%), and had a 3.88 mean clinic visits for migraine. Researchers assessed prescription of migraine preventive medication as a primary outcome, with a secondary outcome of comparing the rate of migraine preventive prescriptions written by pediatric and adult neurologists.

Overall, 290 patients (37.8%) received care from a pediatric neurologist, and 131 of those 290 patients (45.2%) received preventive medications (95% confidence interval, 39.5%-51.0%). The remaining 477 patients received care from an adult neurologist; of these, 206 patients (43.2%) received preventive medications (95% CI, 39.0%-47.7%; P = .591). The most common preventive medication prescribed was topiramate, which was prescribed in 19.1% of cases by adult neurologists and 15.2% of cases by pediatric neurologists. Other preventive medications included tricyclic antidepressants such as amitriptyline and nortriptyline; pediatric neurologists prescribed amitriptyline more often than adult neurologists (14.5% vs. 5.5%; P <  .001), and adult neurologists prescribed nortriptyline more often than pediatric neurologists (12.8% vs. 2.4%; P < .001).

Dr. Shapiro and colleagues performed a mixed effects logistic regression analysis of potential confounders, and found no significant association between clinician specialty and use of preventive medication (adjusted odds ratio, 1.20; 95% CI, 0.62­-2.31), while factors such as female sex (aOR, 1.69; 95% CI, 1.07-2.66) and number of visits (aOR, 1.64; 95% CI, 1.49-1.80) carried associations with preventive medication use.

The finding that pediatric and adult neurologists use similar preventive medications is a positive one because “patients who continue care into adulthood with a pediatric neurologist should receive comparable care to the care they would receive with an adult neurologist,” Dr. Shapiro and colleagues said. “It is even more pertinent now for pediatric neurologists to have comfort prescribing preventive medication to young adults, as the newer calcitonin gene-related peptide (CGRP) pathway antagonists are currently only FDA approved for use in patients aged 18 years or older.”
 

 

 

Roadblocks may prevent adoption

M. Cristina Victorio, MD, a pediatric neurologist and director of the headache program at Akron (Ohio) Children’s, said in an interview that the study is well-designed, but the results cannot be generalized as the study is retrospective, was conducted at a single institution, and data about nutraceuticals and drug-free neuromodulation devices were excluded from the analysis.

Dr. M. Cristina Victorio

Another aspect of the study to consider is that episodic migraine, defined as between 0 and 14 migraine days per month, comprised most of the diagnoses in this study, while preventive medication is usually considered in patients with migraines occurring at least 6 days per month. “[I]f migraine is only once every other month or once a month, preventive treatment may not be recommended,” she said.

There is also the element of patient preference, which is “difficult to obtain” in a retrospective study, she noted.

Citing the authors’ comments about pediatric neurologists’ comfortability prescribing preventive medications, including CGRP antagonists, Dr. Victorio said she offers CGRP antagonists to “young adult patients who have failed at least two of the guideline-recommended preventive medications.”

However, pediatric neurologists may encounter roadblocks to prescribing these medications. “A big challenge is access, as it requires prior authorization as well as writing a letter of appeal or medical necessity, which can be a nuisance for clinicians who are already inundated with clinical responsibilities,” she said.
 

More education is needed

“As a pediatric headache specialist and knowing the results of this study, my colleagues and I have a role in educating all clinicians as well as trainees on headache management to improve and provide optimal care for young adult patients with migraine,” Dr. Victorio said.

In her experience, more clinic visits usually mean a need for preventative medication, and psychiatric morbidities are common. “I differ in the sense that as a headache specialist I am comfortable offering various preventive treatment options when indicated, so I do not believe I am underutilizing,” she said.

Dr. Victorio said she prescribes topiramate, amitriptyline, and propranolol as migraine preventatives for adolescents and young adults, but recommends cyproheptadine for younger children “due to lesser side effects, tolerability, and convenience of formulation (both liquid and tablet forms are available), which can be challenging for younger children who are unable to swallow pills.”

“Cognizant that there are patients who are reluctant to take daily prescription medication and that consideration for preventive treatment includes patient’s preference, I include the use of nutraceuticals and drug-free neuromodulation devices when discussing preventive treatment options,” she added, noting that children and adolescents “[m]ore often than not” prefer nutraceuticals like magnesium and vitamin B2.

“I think the bottom line is that all clinicians managing young adults with migraine should know when to consider starting preventive migraine medication,” Dr. Victorio said. “Not offering preventive treatment to young adults specifically for those who have frequent migraine attacks, or those who have severe migraine despite adequate acute treatment, or those with significant adverse reactions to acute medications will only put these patients at risk to progression to chronic migraine (meaning having migraine more often than not – at least 15 days per month), and increases headache-related disability and reduces quality of life.”

The authors report no relevant financial disclosures. This study was supported by Harvard University and an award from the National Institutes of Health. Dr. Victorio reports being on the advisory board for Theranica Bio-electronics, has received honorarium serving as an author of the Merck Manual, and is involved in industry-sponsored clinical trials through Akron Children’s Hospital.

Prescribing patterns of preventive migraine medications for young adults do not appear to vary based on whether the provider is a pediatric or adult neurologist, but researchers say preventive medications may be underused for this group, according to recent research published in the journal Headache.

“Approximately two-fifths of young adults with migraine were prescribed preventive medications, and this did not differ between pediatric and adult neurologists,” Hannah F. J. Shapiro MD, of the department of neurology at the University of California, San Francisco, and the UCSF Benioff Children’s Hospitals, and colleagues wrote in their study. “This finding suggests that pediatric neurologists are providing comparable care to adult neurologists for young adults with migraine; however, this may represent the underuse of preventive medications in this patient population.”

Dr. Hannah F. J. Shapiro

Dr. Shapiro and colleagues conducted a retrospective study of 767 patients (mean age 20.3 years) at Mass General Brigham Hospital in Boston between 2017 and 2021 who received care from a pediatric or adult neurologist for episodic migraine. The majority of patients in the study were white (72.2%), non-Hispanic (82.1%) women (80.3%) with episodic migraine (72.8%), some of whom experienced a psychiatric comorbidity (12.7%), and had a 3.88 mean clinic visits for migraine. Researchers assessed prescription of migraine preventive medication as a primary outcome, with a secondary outcome of comparing the rate of migraine preventive prescriptions written by pediatric and adult neurologists.

Overall, 290 patients (37.8%) received care from a pediatric neurologist, and 131 of those 290 patients (45.2%) received preventive medications (95% confidence interval, 39.5%-51.0%). The remaining 477 patients received care from an adult neurologist; of these, 206 patients (43.2%) received preventive medications (95% CI, 39.0%-47.7%; P = .591). The most common preventive medication prescribed was topiramate, which was prescribed in 19.1% of cases by adult neurologists and 15.2% of cases by pediatric neurologists. Other preventive medications included tricyclic antidepressants such as amitriptyline and nortriptyline; pediatric neurologists prescribed amitriptyline more often than adult neurologists (14.5% vs. 5.5%; P <  .001), and adult neurologists prescribed nortriptyline more often than pediatric neurologists (12.8% vs. 2.4%; P < .001).

Dr. Shapiro and colleagues performed a mixed effects logistic regression analysis of potential confounders, and found no significant association between clinician specialty and use of preventive medication (adjusted odds ratio, 1.20; 95% CI, 0.62­-2.31), while factors such as female sex (aOR, 1.69; 95% CI, 1.07-2.66) and number of visits (aOR, 1.64; 95% CI, 1.49-1.80) carried associations with preventive medication use.

The finding that pediatric and adult neurologists use similar preventive medications is a positive one because “patients who continue care into adulthood with a pediatric neurologist should receive comparable care to the care they would receive with an adult neurologist,” Dr. Shapiro and colleagues said. “It is even more pertinent now for pediatric neurologists to have comfort prescribing preventive medication to young adults, as the newer calcitonin gene-related peptide (CGRP) pathway antagonists are currently only FDA approved for use in patients aged 18 years or older.”
 

 

 

Roadblocks may prevent adoption

M. Cristina Victorio, MD, a pediatric neurologist and director of the headache program at Akron (Ohio) Children’s, said in an interview that the study is well-designed, but the results cannot be generalized as the study is retrospective, was conducted at a single institution, and data about nutraceuticals and drug-free neuromodulation devices were excluded from the analysis.

Dr. M. Cristina Victorio

Another aspect of the study to consider is that episodic migraine, defined as between 0 and 14 migraine days per month, comprised most of the diagnoses in this study, while preventive medication is usually considered in patients with migraines occurring at least 6 days per month. “[I]f migraine is only once every other month or once a month, preventive treatment may not be recommended,” she said.

There is also the element of patient preference, which is “difficult to obtain” in a retrospective study, she noted.

Citing the authors’ comments about pediatric neurologists’ comfortability prescribing preventive medications, including CGRP antagonists, Dr. Victorio said she offers CGRP antagonists to “young adult patients who have failed at least two of the guideline-recommended preventive medications.”

However, pediatric neurologists may encounter roadblocks to prescribing these medications. “A big challenge is access, as it requires prior authorization as well as writing a letter of appeal or medical necessity, which can be a nuisance for clinicians who are already inundated with clinical responsibilities,” she said.
 

More education is needed

“As a pediatric headache specialist and knowing the results of this study, my colleagues and I have a role in educating all clinicians as well as trainees on headache management to improve and provide optimal care for young adult patients with migraine,” Dr. Victorio said.

In her experience, more clinic visits usually mean a need for preventative medication, and psychiatric morbidities are common. “I differ in the sense that as a headache specialist I am comfortable offering various preventive treatment options when indicated, so I do not believe I am underutilizing,” she said.

Dr. Victorio said she prescribes topiramate, amitriptyline, and propranolol as migraine preventatives for adolescents and young adults, but recommends cyproheptadine for younger children “due to lesser side effects, tolerability, and convenience of formulation (both liquid and tablet forms are available), which can be challenging for younger children who are unable to swallow pills.”

“Cognizant that there are patients who are reluctant to take daily prescription medication and that consideration for preventive treatment includes patient’s preference, I include the use of nutraceuticals and drug-free neuromodulation devices when discussing preventive treatment options,” she added, noting that children and adolescents “[m]ore often than not” prefer nutraceuticals like magnesium and vitamin B2.

“I think the bottom line is that all clinicians managing young adults with migraine should know when to consider starting preventive migraine medication,” Dr. Victorio said. “Not offering preventive treatment to young adults specifically for those who have frequent migraine attacks, or those who have severe migraine despite adequate acute treatment, or those with significant adverse reactions to acute medications will only put these patients at risk to progression to chronic migraine (meaning having migraine more often than not – at least 15 days per month), and increases headache-related disability and reduces quality of life.”

The authors report no relevant financial disclosures. This study was supported by Harvard University and an award from the National Institutes of Health. Dr. Victorio reports being on the advisory board for Theranica Bio-electronics, has received honorarium serving as an author of the Merck Manual, and is involved in industry-sponsored clinical trials through Akron Children’s Hospital.

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From failure to hope: Tracking the changing landscape of Alzheimer’s therapies

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In 2014 neurologist Jeffrey L. Cummings, MD, startled the Alzheimer’s disease research world with a paper that laid bare the alarmingly high failure rate of Alzheimer’s disease therapies in development.

Publishing in the journal Alzheimer’s Research & Therapy, Dr. Cummings and his colleagues determined that 99.6% of all therapies tested between 2002 and 2012 had failed. Since downloaded some 75,000 times, Dr. Cumming’s “99% paper,” as it came to be nicknamed, led him to look more deeply and thoroughly at Alzheimer’s disease drugs in the pipeline, and describe them in a readable, user-friendly way.

Every year since 2016, Dr. Cummings, of the University of Nevada, Las Vegas, and his colleagues, have published an update of Alzheimer’s drugs in development that offers a concise, graphic, all-in-one overview. His “Alzheimer’s Drug Development Pipeline” report, in the journal Alzheimer’s & Dementia, classifies therapies by their targets, their mechanisms of action, and where they stand in the development process.

Dr. Jeffrey L. Cummings

Heavy on color-coded visuals, this snapshot of Alzheimer’s disease therapies is widely consulted by industry, researchers, and clinicians. Over time this report – which first documented a crisis – has come to show something more optimistic: an increasingly crowded pipeline reflecting a broad array of treatment approaches. Dr. Cummings wants more people to know that Alzheimer’s disease drug research, which now includes the first two Food and Drug Administration–approved monoclonal antibodies against amyloid-beta, is not the bleak landscape that it was in recent memory.

Lately, with the help of a grant from the National Institute on Aging, Dr. Cummings and his group have been working to expand on their reports to build an even more user-friendly database that can be searched by people in all corners of the neurodegenerative disease world. Dr. Cummings says he plans for this public-facing database to be up and running by year end.

Neurology Reviews spoke with Dr. Cummings, who is a member of the publication’s Editorial Advisory Board, about the genesis of his influential drug-tracking effort, how it has evolved, and what has been learned from it over the years.
 

How did all this begin?

Already in 2014 there was a dialogue going on was about the high failure rate for Alzheimer’s drugs. And I thought: “there’s probably a number that can be assigned to that.” And when it turned out to be 99.6%, that generated a huge amount of interest. That’s when I realized what interests me also interests the world. And that I was uniquely positioned after that point to do something annually.

How do you create your annual report, and how do you classify the drugs in it when some might act on little-understood pathways or mechanisms?

We capture information available on clinicaltrials.gov. We are notified immediately of any new Alzheimer-related trials, and we automate everything that is possible to automate. But there is still some human curation required. Most of that is around mechanisms. If it’s a monoclonal antibody directed at amyloid-beta, that’s not difficult to categorize. But with the small molecules especially, it can be more complicated.

We often look to see how the sponsor describes the drug and what their perception of the primary target is. A resource of great importance to us is CADRO, Common Alzheimer’s and Related Dementias Disease Research Ontology, which describes about 20 mechanisms that a group of scientists sponsored by the National Institutes of Health and the Alzheimer’s Association have agreed on. Inflammation, epigenetics, and oxidation are just a few that most people know. CADRO is organized in a very specific way that allows us to go to the mechanism and relate it to the target. But we do try to be humble and acknowledge we probably make some errors in this.
 

Are you able to capture every Alzheimer’s drug in development globally?

If they’re on clinicaltrials.gov, they’re in our database. But we think there’s about 15% of drugs in the world that aren’t for some reason on clinicaltrials.gov – so we know we are comprehensive, but not quite exhaustive. I’m in kind of quandary about whether to search for that other 15%. But we do always acknowledge that we’re not 100% exhaustive.

Who are the report’s main readers?

Drug developers use it for investor discussions, and also to understand the competition and the landscape. The competition might be a drug with the same mechanism, and the landscape might be drugs coming into the Alzheimer’s disease world. So if someone is developing a PDE-5 inhibitor for mild dementia, for example, they can see that other people are working on a PDE-5 inhibitor for moderate dementia, and there’s no overlap. Investors use the report to make decisions about which horse in the race to bet on. And of course it’s used by academics and clinicians to learn which are the new drugs in the pipeline, which drugs have fallen out of the pipeline, how are biomarkers changing trials, what are the new outcomes.

It’s really become a community project. Investigators will email me and say “Jeff, we’re in phase 1, make sure it’s on your map.” Or, “you forgot our agent! We’re disappointed.” When that occurs it’s because they were not in a trial on the index date – the 1 day in our publication when everything we say in the paper is true. A trial initiated 1 day later won’t make the report for that year.
 

What about patients and families? Are they able to use the report as well?

One of the things we want to expand with the new database is its usefulness for patients. Among the new data display approaches that we have is a world map where you can go click on a dot near your home and find active trials. That’s something patients and families want to know, right? There’s 140 drugs in clinical trials, there must be one for me, how would I get to it? Soon we will have quite a good public portal so if you want to go in and see what new monoclonal antibodies are in phase 2, you can do that with drop-down menus. It’s a very easy to use site that anyone can explore.

 

 

Looking back at your last decade tracking drugs, what are some lessons learned and what are some of the more exciting drug categories to emerge?

My answer to this question is: Biologics rule. The main successes have been in biologics, in the monoclonal antibodies against amyloid, like the two FDA-approved agents lecanemab and aducanumab. But I think that the monoclonals, while I’m really happy to have them, are a first step. If you look back at tacrine, the first drug approved in 1993 for Alzheimer’s disease, it was a very difficult drug with lots of side effects. But then within 3 years we had donepezil, which was a very benign drug. I feel that a similar evolution is likely with regard to these antibodies. The first ones, we know, have big challenges, and you learn from those challenges and you just keep improving them. But you have to start somewhere, and you have to validate that target. Now I think that amyloid is validated.

What other approaches are interesting to you?

We have seen dramatic imaging results with marked reductions in neurofibrillary tangles from an antisense oligonucleotide aimed at tau protein. And there are two very active areas in the pipeline: inflammation and synaptic plasticity. Each has roughly 20 drugs apiece in development across all phases. And as you know, both synaptic plasticity and inflammation are represented across neurodegenerative conditions.

Your annual report has always focused on drugs to treat Alzheimer’s disease. Will the new database cover other types of dementia and neurodegenerative diseases?

That’s an obvious next step. I’m hoping that late this year we will have funding to expand the database into frontotemporal lobar degenerations, which will include all the tauopathies. And there’s also an overlap with TDP-43 diseases, so we’ll bring all of that in too. We have a new initiative on Parkinson’s disease and dementia with Lewy bodies that I hope will materialize by next year. My goal is that this will eventually become a neurodegenerative disease therapies database. The really interesting drugs right now are being tested in more than one neurodegenerative disease, and we should look at those more carefully. It will be more feasible to do that if they’re on the same data set.

What about other therapy classes?

We aim to be more serious about devices.

What will you call the database?

The Clinical Trial Observatory. We may start by calling it the Alzheimer’s Disease Clinical Trial Observatory. But the intention, obviously, is to go way beyond Alzheimer’s disease. The database is managed by a terrific team of data scientists at Cleveland Clinic, led by Feixiong Cheng, PhD.

The annual pipeline report is very much associated with you. Is the database going to be different?

Right now, I’m like the grandfather of this project. I won’t be around forever. This will have to pass on, and we’re already talking about succession. We’re thinking about how to make sure this community resource continues to be a community resource. Also, over all these years the annual report reflected my perspective. But with a database, many more people will be able to share their perspectives. I happen to think that “biologics rule,” but others might look at the data, see different scientific currents, and draw different conclusions. That will create a rich dialogue.

Do you think your reports have changed people’s perspectives on Alzheimer’s disease therapies? There’s a widely held idea that the field is exclusively focused on amyloid, or even dead-ended, but the papers seem to show something different.

We think this effort has helped, and will continue to help and foster investment and growth in treatments for our patients. It really does show how diverse the clinical trials landscape is now. People are surprised to learn of the number and diversity of approaches. Just last week I was presenting at the Center for Brain Health in Dallas and there was a doctor in the audience who was a caregiver to his wife with Alzheimer’s disease. He came up afterwards and said, “I had no idea there were so many drugs in clinical trials,” because there’s no way to find out if you don’t know about this resource.

Dr. Cummings discloses consulting for a range of companies working in Alzheimer’s therapies and diagnostics, including Acadia, Alkahest, AlphaCognition, AriBio, Avanir, Axsome, Behren, Biogen, Biohaven, Cassava, Cerecin, Cortexyme, Diadem, EIP Pharma, Eisai, GemVax, Genentech, Green Valley, Grifols, Janssen, LSP, Merck, NervGen, Novo Nordisk, Oligomerix, Ono, Otsuka, PRODEO, ReMYND, Renew, Resverlogix, Roche, Signant Health, Suven, United Neuroscience, and Unlearn AI. He has received several grants from the National Institute on Aging.

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In 2014 neurologist Jeffrey L. Cummings, MD, startled the Alzheimer’s disease research world with a paper that laid bare the alarmingly high failure rate of Alzheimer’s disease therapies in development.

Publishing in the journal Alzheimer’s Research & Therapy, Dr. Cummings and his colleagues determined that 99.6% of all therapies tested between 2002 and 2012 had failed. Since downloaded some 75,000 times, Dr. Cumming’s “99% paper,” as it came to be nicknamed, led him to look more deeply and thoroughly at Alzheimer’s disease drugs in the pipeline, and describe them in a readable, user-friendly way.

Every year since 2016, Dr. Cummings, of the University of Nevada, Las Vegas, and his colleagues, have published an update of Alzheimer’s drugs in development that offers a concise, graphic, all-in-one overview. His “Alzheimer’s Drug Development Pipeline” report, in the journal Alzheimer’s & Dementia, classifies therapies by their targets, their mechanisms of action, and where they stand in the development process.

Dr. Jeffrey L. Cummings

Heavy on color-coded visuals, this snapshot of Alzheimer’s disease therapies is widely consulted by industry, researchers, and clinicians. Over time this report – which first documented a crisis – has come to show something more optimistic: an increasingly crowded pipeline reflecting a broad array of treatment approaches. Dr. Cummings wants more people to know that Alzheimer’s disease drug research, which now includes the first two Food and Drug Administration–approved monoclonal antibodies against amyloid-beta, is not the bleak landscape that it was in recent memory.

Lately, with the help of a grant from the National Institute on Aging, Dr. Cummings and his group have been working to expand on their reports to build an even more user-friendly database that can be searched by people in all corners of the neurodegenerative disease world. Dr. Cummings says he plans for this public-facing database to be up and running by year end.

Neurology Reviews spoke with Dr. Cummings, who is a member of the publication’s Editorial Advisory Board, about the genesis of his influential drug-tracking effort, how it has evolved, and what has been learned from it over the years.
 

How did all this begin?

Already in 2014 there was a dialogue going on was about the high failure rate for Alzheimer’s drugs. And I thought: “there’s probably a number that can be assigned to that.” And when it turned out to be 99.6%, that generated a huge amount of interest. That’s when I realized what interests me also interests the world. And that I was uniquely positioned after that point to do something annually.

How do you create your annual report, and how do you classify the drugs in it when some might act on little-understood pathways or mechanisms?

We capture information available on clinicaltrials.gov. We are notified immediately of any new Alzheimer-related trials, and we automate everything that is possible to automate. But there is still some human curation required. Most of that is around mechanisms. If it’s a monoclonal antibody directed at amyloid-beta, that’s not difficult to categorize. But with the small molecules especially, it can be more complicated.

We often look to see how the sponsor describes the drug and what their perception of the primary target is. A resource of great importance to us is CADRO, Common Alzheimer’s and Related Dementias Disease Research Ontology, which describes about 20 mechanisms that a group of scientists sponsored by the National Institutes of Health and the Alzheimer’s Association have agreed on. Inflammation, epigenetics, and oxidation are just a few that most people know. CADRO is organized in a very specific way that allows us to go to the mechanism and relate it to the target. But we do try to be humble and acknowledge we probably make some errors in this.
 

Are you able to capture every Alzheimer’s drug in development globally?

If they’re on clinicaltrials.gov, they’re in our database. But we think there’s about 15% of drugs in the world that aren’t for some reason on clinicaltrials.gov – so we know we are comprehensive, but not quite exhaustive. I’m in kind of quandary about whether to search for that other 15%. But we do always acknowledge that we’re not 100% exhaustive.

Who are the report’s main readers?

Drug developers use it for investor discussions, and also to understand the competition and the landscape. The competition might be a drug with the same mechanism, and the landscape might be drugs coming into the Alzheimer’s disease world. So if someone is developing a PDE-5 inhibitor for mild dementia, for example, they can see that other people are working on a PDE-5 inhibitor for moderate dementia, and there’s no overlap. Investors use the report to make decisions about which horse in the race to bet on. And of course it’s used by academics and clinicians to learn which are the new drugs in the pipeline, which drugs have fallen out of the pipeline, how are biomarkers changing trials, what are the new outcomes.

It’s really become a community project. Investigators will email me and say “Jeff, we’re in phase 1, make sure it’s on your map.” Or, “you forgot our agent! We’re disappointed.” When that occurs it’s because they were not in a trial on the index date – the 1 day in our publication when everything we say in the paper is true. A trial initiated 1 day later won’t make the report for that year.
 

What about patients and families? Are they able to use the report as well?

One of the things we want to expand with the new database is its usefulness for patients. Among the new data display approaches that we have is a world map where you can go click on a dot near your home and find active trials. That’s something patients and families want to know, right? There’s 140 drugs in clinical trials, there must be one for me, how would I get to it? Soon we will have quite a good public portal so if you want to go in and see what new monoclonal antibodies are in phase 2, you can do that with drop-down menus. It’s a very easy to use site that anyone can explore.

 

 

Looking back at your last decade tracking drugs, what are some lessons learned and what are some of the more exciting drug categories to emerge?

My answer to this question is: Biologics rule. The main successes have been in biologics, in the monoclonal antibodies against amyloid, like the two FDA-approved agents lecanemab and aducanumab. But I think that the monoclonals, while I’m really happy to have them, are a first step. If you look back at tacrine, the first drug approved in 1993 for Alzheimer’s disease, it was a very difficult drug with lots of side effects. But then within 3 years we had donepezil, which was a very benign drug. I feel that a similar evolution is likely with regard to these antibodies. The first ones, we know, have big challenges, and you learn from those challenges and you just keep improving them. But you have to start somewhere, and you have to validate that target. Now I think that amyloid is validated.

What other approaches are interesting to you?

We have seen dramatic imaging results with marked reductions in neurofibrillary tangles from an antisense oligonucleotide aimed at tau protein. And there are two very active areas in the pipeline: inflammation and synaptic plasticity. Each has roughly 20 drugs apiece in development across all phases. And as you know, both synaptic plasticity and inflammation are represented across neurodegenerative conditions.

Your annual report has always focused on drugs to treat Alzheimer’s disease. Will the new database cover other types of dementia and neurodegenerative diseases?

That’s an obvious next step. I’m hoping that late this year we will have funding to expand the database into frontotemporal lobar degenerations, which will include all the tauopathies. And there’s also an overlap with TDP-43 diseases, so we’ll bring all of that in too. We have a new initiative on Parkinson’s disease and dementia with Lewy bodies that I hope will materialize by next year. My goal is that this will eventually become a neurodegenerative disease therapies database. The really interesting drugs right now are being tested in more than one neurodegenerative disease, and we should look at those more carefully. It will be more feasible to do that if they’re on the same data set.

What about other therapy classes?

We aim to be more serious about devices.

What will you call the database?

The Clinical Trial Observatory. We may start by calling it the Alzheimer’s Disease Clinical Trial Observatory. But the intention, obviously, is to go way beyond Alzheimer’s disease. The database is managed by a terrific team of data scientists at Cleveland Clinic, led by Feixiong Cheng, PhD.

The annual pipeline report is very much associated with you. Is the database going to be different?

Right now, I’m like the grandfather of this project. I won’t be around forever. This will have to pass on, and we’re already talking about succession. We’re thinking about how to make sure this community resource continues to be a community resource. Also, over all these years the annual report reflected my perspective. But with a database, many more people will be able to share their perspectives. I happen to think that “biologics rule,” but others might look at the data, see different scientific currents, and draw different conclusions. That will create a rich dialogue.

Do you think your reports have changed people’s perspectives on Alzheimer’s disease therapies? There’s a widely held idea that the field is exclusively focused on amyloid, or even dead-ended, but the papers seem to show something different.

We think this effort has helped, and will continue to help and foster investment and growth in treatments for our patients. It really does show how diverse the clinical trials landscape is now. People are surprised to learn of the number and diversity of approaches. Just last week I was presenting at the Center for Brain Health in Dallas and there was a doctor in the audience who was a caregiver to his wife with Alzheimer’s disease. He came up afterwards and said, “I had no idea there were so many drugs in clinical trials,” because there’s no way to find out if you don’t know about this resource.

Dr. Cummings discloses consulting for a range of companies working in Alzheimer’s therapies and diagnostics, including Acadia, Alkahest, AlphaCognition, AriBio, Avanir, Axsome, Behren, Biogen, Biohaven, Cassava, Cerecin, Cortexyme, Diadem, EIP Pharma, Eisai, GemVax, Genentech, Green Valley, Grifols, Janssen, LSP, Merck, NervGen, Novo Nordisk, Oligomerix, Ono, Otsuka, PRODEO, ReMYND, Renew, Resverlogix, Roche, Signant Health, Suven, United Neuroscience, and Unlearn AI. He has received several grants from the National Institute on Aging.

In 2014 neurologist Jeffrey L. Cummings, MD, startled the Alzheimer’s disease research world with a paper that laid bare the alarmingly high failure rate of Alzheimer’s disease therapies in development.

Publishing in the journal Alzheimer’s Research & Therapy, Dr. Cummings and his colleagues determined that 99.6% of all therapies tested between 2002 and 2012 had failed. Since downloaded some 75,000 times, Dr. Cumming’s “99% paper,” as it came to be nicknamed, led him to look more deeply and thoroughly at Alzheimer’s disease drugs in the pipeline, and describe them in a readable, user-friendly way.

Every year since 2016, Dr. Cummings, of the University of Nevada, Las Vegas, and his colleagues, have published an update of Alzheimer’s drugs in development that offers a concise, graphic, all-in-one overview. His “Alzheimer’s Drug Development Pipeline” report, in the journal Alzheimer’s & Dementia, classifies therapies by their targets, their mechanisms of action, and where they stand in the development process.

Dr. Jeffrey L. Cummings

Heavy on color-coded visuals, this snapshot of Alzheimer’s disease therapies is widely consulted by industry, researchers, and clinicians. Over time this report – which first documented a crisis – has come to show something more optimistic: an increasingly crowded pipeline reflecting a broad array of treatment approaches. Dr. Cummings wants more people to know that Alzheimer’s disease drug research, which now includes the first two Food and Drug Administration–approved monoclonal antibodies against amyloid-beta, is not the bleak landscape that it was in recent memory.

Lately, with the help of a grant from the National Institute on Aging, Dr. Cummings and his group have been working to expand on their reports to build an even more user-friendly database that can be searched by people in all corners of the neurodegenerative disease world. Dr. Cummings says he plans for this public-facing database to be up and running by year end.

Neurology Reviews spoke with Dr. Cummings, who is a member of the publication’s Editorial Advisory Board, about the genesis of his influential drug-tracking effort, how it has evolved, and what has been learned from it over the years.
 

How did all this begin?

Already in 2014 there was a dialogue going on was about the high failure rate for Alzheimer’s drugs. And I thought: “there’s probably a number that can be assigned to that.” And when it turned out to be 99.6%, that generated a huge amount of interest. That’s when I realized what interests me also interests the world. And that I was uniquely positioned after that point to do something annually.

How do you create your annual report, and how do you classify the drugs in it when some might act on little-understood pathways or mechanisms?

We capture information available on clinicaltrials.gov. We are notified immediately of any new Alzheimer-related trials, and we automate everything that is possible to automate. But there is still some human curation required. Most of that is around mechanisms. If it’s a monoclonal antibody directed at amyloid-beta, that’s not difficult to categorize. But with the small molecules especially, it can be more complicated.

We often look to see how the sponsor describes the drug and what their perception of the primary target is. A resource of great importance to us is CADRO, Common Alzheimer’s and Related Dementias Disease Research Ontology, which describes about 20 mechanisms that a group of scientists sponsored by the National Institutes of Health and the Alzheimer’s Association have agreed on. Inflammation, epigenetics, and oxidation are just a few that most people know. CADRO is organized in a very specific way that allows us to go to the mechanism and relate it to the target. But we do try to be humble and acknowledge we probably make some errors in this.
 

Are you able to capture every Alzheimer’s drug in development globally?

If they’re on clinicaltrials.gov, they’re in our database. But we think there’s about 15% of drugs in the world that aren’t for some reason on clinicaltrials.gov – so we know we are comprehensive, but not quite exhaustive. I’m in kind of quandary about whether to search for that other 15%. But we do always acknowledge that we’re not 100% exhaustive.

Who are the report’s main readers?

Drug developers use it for investor discussions, and also to understand the competition and the landscape. The competition might be a drug with the same mechanism, and the landscape might be drugs coming into the Alzheimer’s disease world. So if someone is developing a PDE-5 inhibitor for mild dementia, for example, they can see that other people are working on a PDE-5 inhibitor for moderate dementia, and there’s no overlap. Investors use the report to make decisions about which horse in the race to bet on. And of course it’s used by academics and clinicians to learn which are the new drugs in the pipeline, which drugs have fallen out of the pipeline, how are biomarkers changing trials, what are the new outcomes.

It’s really become a community project. Investigators will email me and say “Jeff, we’re in phase 1, make sure it’s on your map.” Or, “you forgot our agent! We’re disappointed.” When that occurs it’s because they were not in a trial on the index date – the 1 day in our publication when everything we say in the paper is true. A trial initiated 1 day later won’t make the report for that year.
 

What about patients and families? Are they able to use the report as well?

One of the things we want to expand with the new database is its usefulness for patients. Among the new data display approaches that we have is a world map where you can go click on a dot near your home and find active trials. That’s something patients and families want to know, right? There’s 140 drugs in clinical trials, there must be one for me, how would I get to it? Soon we will have quite a good public portal so if you want to go in and see what new monoclonal antibodies are in phase 2, you can do that with drop-down menus. It’s a very easy to use site that anyone can explore.

 

 

Looking back at your last decade tracking drugs, what are some lessons learned and what are some of the more exciting drug categories to emerge?

My answer to this question is: Biologics rule. The main successes have been in biologics, in the monoclonal antibodies against amyloid, like the two FDA-approved agents lecanemab and aducanumab. But I think that the monoclonals, while I’m really happy to have them, are a first step. If you look back at tacrine, the first drug approved in 1993 for Alzheimer’s disease, it was a very difficult drug with lots of side effects. But then within 3 years we had donepezil, which was a very benign drug. I feel that a similar evolution is likely with regard to these antibodies. The first ones, we know, have big challenges, and you learn from those challenges and you just keep improving them. But you have to start somewhere, and you have to validate that target. Now I think that amyloid is validated.

What other approaches are interesting to you?

We have seen dramatic imaging results with marked reductions in neurofibrillary tangles from an antisense oligonucleotide aimed at tau protein. And there are two very active areas in the pipeline: inflammation and synaptic plasticity. Each has roughly 20 drugs apiece in development across all phases. And as you know, both synaptic plasticity and inflammation are represented across neurodegenerative conditions.

Your annual report has always focused on drugs to treat Alzheimer’s disease. Will the new database cover other types of dementia and neurodegenerative diseases?

That’s an obvious next step. I’m hoping that late this year we will have funding to expand the database into frontotemporal lobar degenerations, which will include all the tauopathies. And there’s also an overlap with TDP-43 diseases, so we’ll bring all of that in too. We have a new initiative on Parkinson’s disease and dementia with Lewy bodies that I hope will materialize by next year. My goal is that this will eventually become a neurodegenerative disease therapies database. The really interesting drugs right now are being tested in more than one neurodegenerative disease, and we should look at those more carefully. It will be more feasible to do that if they’re on the same data set.

What about other therapy classes?

We aim to be more serious about devices.

What will you call the database?

The Clinical Trial Observatory. We may start by calling it the Alzheimer’s Disease Clinical Trial Observatory. But the intention, obviously, is to go way beyond Alzheimer’s disease. The database is managed by a terrific team of data scientists at Cleveland Clinic, led by Feixiong Cheng, PhD.

The annual pipeline report is very much associated with you. Is the database going to be different?

Right now, I’m like the grandfather of this project. I won’t be around forever. This will have to pass on, and we’re already talking about succession. We’re thinking about how to make sure this community resource continues to be a community resource. Also, over all these years the annual report reflected my perspective. But with a database, many more people will be able to share their perspectives. I happen to think that “biologics rule,” but others might look at the data, see different scientific currents, and draw different conclusions. That will create a rich dialogue.

Do you think your reports have changed people’s perspectives on Alzheimer’s disease therapies? There’s a widely held idea that the field is exclusively focused on amyloid, or even dead-ended, but the papers seem to show something different.

We think this effort has helped, and will continue to help and foster investment and growth in treatments for our patients. It really does show how diverse the clinical trials landscape is now. People are surprised to learn of the number and diversity of approaches. Just last week I was presenting at the Center for Brain Health in Dallas and there was a doctor in the audience who was a caregiver to his wife with Alzheimer’s disease. He came up afterwards and said, “I had no idea there were so many drugs in clinical trials,” because there’s no way to find out if you don’t know about this resource.

Dr. Cummings discloses consulting for a range of companies working in Alzheimer’s therapies and diagnostics, including Acadia, Alkahest, AlphaCognition, AriBio, Avanir, Axsome, Behren, Biogen, Biohaven, Cassava, Cerecin, Cortexyme, Diadem, EIP Pharma, Eisai, GemVax, Genentech, Green Valley, Grifols, Janssen, LSP, Merck, NervGen, Novo Nordisk, Oligomerix, Ono, Otsuka, PRODEO, ReMYND, Renew, Resverlogix, Roche, Signant Health, Suven, United Neuroscience, and Unlearn AI. He has received several grants from the National Institute on Aging.

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What’s Eating You? Phlebotomine Sandflies and Leishmania Parasites

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Fri, 10/20/2023 - 15:51
Display Headline
What’s Eating You? Phlebotomine Sandflies and Leishmania Parasites

The genus Leishmania comprises protozoan parasites that cause approximately 2 million new cases of leishmaniasis each year across 98 countries.1 These protozoa are obligate intracellular parasites of phlebotomine sandfly species that transmit leishmaniasis and result in a considerable parasitic cause of fatalities globally, second only to malaria.2,3

Phlebotomine sandflies primarily live in tropical and subtropical regions and function as vectors for many pathogens in addition to Leishmania species, such as Bartonella species and arboviruses.3 In 2004, it was noted that the majority of leishmaniasis cases affected developing countries: 90% of visceral leishmaniasis cases occurred in Bangladesh, India, Nepal, Sudan, and Brazil, and 90% of cutaneous leishmaniasis cases occurred in Afghanistan, Algeria, Brazil, Iran, Peru, Saudi Arabia, and Syria.4 Of note, with recent environmental changes, phlebotomine sandflies have gradually migrated to more northerly latitudes, extending into Europe.5

Twenty Leishmania species and 30 sandfly species have been identified as causes of leishmaniasis.4Leishmania infection occurs when an infected sandfly bites a mammalian host and transmits the parasite’s flagellated form, known as a promastigote. Host inflammatory cells, such as monocytes and dendritic cells, phagocytize parasites that enter the skin. The interaction between parasites and dendritic cells become an important factor in the outcome of Leishmania infection in the host because dendritic cells promote development of CD4 and CD8 T lymphocytes with specificity to target Leishmania parasites and protect the host.1

The number of cases of leishmaniasis has increased worldwide, most likely due to changes in the environment and human behaviors such as urbanization, the creation of new settlements, and migration from rural to urban areas.3,5 Important risk factors in individual patients include malnutrition; low-quality housing and sanitation; a history of migration or travel; and immunosuppression, such as that caused by HIV co-infection.2,5

Case Report

An otherwise healthy 25-year-old Bangladeshi man presented to our community hospital for evaluation of a painful leg ulcer of 1 month’s duration. The patient had migrated from Bangladesh to Panama, then to Costa Rica, followed by Guatemala, Honduras, Mexico, and, last, Texas. In Texas, he was identified by the US Immigration and Customs Enforcement, transported to a detention facility, and transferred to this hospital shortly afterward.

The patient reported that, during his extensive migration, he had lived in the jungle and reported what he described as mosquito bites on the legs. He subsequently developed a 3-cm ulcerated and crusted plaque with rolled borders on the right medial ankle (Figure 1). In addition, he had a palpable nodular cord on the medial leg from the ankle lesion to the mid thigh that was consistent with lymphocutaneous spread. Ultrasonography was negative for deep-vein thrombosis.

A single, 3-cm, ulcerated and crusted plaque with rolled borders on the right medial ankle.
FIGURE 1. A and B, A single, 3-cm, ulcerated and crusted plaque with rolled borders on the right medial ankle.

Because the patient’s recent migration from Central America was highly concerning for microbial infection, vancomycin and piperacillin-tazobactam were started empirically on admission. A punch biopsy from the right medial ankle was nondiagnostic, showing acute and chronic necrotizing inflammation along with numerous epithelioid histiocytes with a vaguely granulomatous appearance (Figure 2). A specimen from the right medial ankle that had already been taken by an astute border patrol medical provider was sent to the Centers for Disease Control and Prevention (CDC) for polymerase chain reaction analysis following admission and was found to be positive for Leishmania panamensis.

In addition to acute and chronic necrotizing inflammation, numerous histiocytes have a vaguely granulomatous appearance (H&E, original magnifications ×4 and ×10).
FIGURE 2. A and B, In addition to acute and chronic necrotizing inflammation, numerous histiocytes have a vaguely granulomatous appearance (H&E, original magnifications ×4 and ×10).

 

 

Given the concern for mucocutaneous leishmaniasis with this particular species, otolaryngology was consulted; however, the patient did not demonstrate mucocutaneous disease. Because of the elevated risk for persistent disease with L panamensis, systemic therapy was indicated and administered: IV amphotericin B 200 mg on days 1 through 5 and again on day 10. Improvement in the ulcer was seen after the 10-day regimen was completed.

Comment

Leishmaniasis can be broadly classified by geographic region or clinical presentation. Under the geographic region system, leishmaniasis can be categorized as Old World or New World. Old World leishmaniasis primarily is transmitted by Phlebotomus sandflies and carries the parasites Leishmania major and Leishmania tropica, among others. New World leishmaniasis is caused by Lutzomyia sandflies, which carry Leishmania mexicana, Leishmania braziliensis, Leishmania amazonensis, and others.6

Our patient presented with cutaneous leishmaniasis, one of 4 primary clinical disease forms of leishmaniasis; the other 3 forms under this classification system are diffuse cutaneous, mucocutaneous, and visceral leishmaniasis, also known as kala-azar.3,6 Cutaneous leishmaniasis is limited to the skin, particularly the face and extremities. This form is more common with Old World vectors, with most cases occurring in Peru, Brazil, and the Middle East. In Old World cutaneous leishmaniasis, the disease begins with a solitary nodule at the site of the bite that ulcerates and can continue to spread in a sporotrichoid pattern. This cutaneous form tends to heal slowly over months to years with residual scarring. New World cutaneous leishmaniasis can present with a variety of clinical manifestations, including ulcerative, sarcoidlike, miliary, and nodular lesions.6,7

The diffuse form of cutaneous leishmaniasis begins in a similar manner to the Old World cutaneous form: a single nodule spreads widely over the body, especially the nose, and covers the patient’s skin with keloidal or verrucous lesions that do not ulcerate. These nodules contain large groupings of Leishmania-filled foamy macrophages. Often, patients with diffuse cutaneous leishmaniasis are immunosuppressed and are unable to develop an immune response to leishmanin and other skin antigens.6,7

Mucocutaneous leishmaniasis predominantly is caused by the New World species L braziliensis but also has been attributed to L amazonensis, L panamensis, and L guyanensis. This form manifests as mucosal lesions that can develop simultaneously with cutaneous lesions but more commonly appear months to years after resolution of the skin infection. Patients often present with ulceration of the lip, nose, and oropharynx, and destruction of the nasopharynx can result in severe consequences such as obstruction of the airway and perforation of the nasal septum (also known as espundia).6,7

The most severe presentation of leishmaniasis is the visceral form (kala-azar), which presents with parasitic infection of the liver, spleen, and bone marrow. Most commonly caused by Leishmania donovani, Leishmania infantum, and Leishmania chagasi, this form has a long incubation period spanning months to years before presenting with diarrhea, hepatomegaly, splenomegaly, darkening of the skin (in Hindi, kala-azar means “black fever”), pancytopenia, lymphadenopathy, nephritis, and intestinal hemorrhage, among other severe manifestations. Visceral leishmaniasis has a poor prognosis: patients succumb to disease within 2 years if not treated.6,7

Diagnosis—Diagnosing leishmaniasis starts with a complete personal and medical history, paying close attention to travel and exposures. Diagnosis is most successfully performed by polymerase chain reaction analysis, which is both highly sensitive and specific but also can be determined by culture using Novy-McNeal-Nicolle medium or by light microscopy. Histologic findings include the marquee sign, which describes an array of amastigotes (promastigotes that have developed into the intracellular tissue-stage form) with kinetoplasts surrounding the periphery of parasitized histiocytes. Giemsa staining can be helpful in identifying organisms.2,6,7

 

 

The diagnosis in our case was challenging, as none of the above findings were seen in our patient. The specimen taken by the border patrol medical provider was negative on Gram, Giemsa, and Grocott-Gömöri methenamine silver staining; no amastigotes were identified. Another diagnostic modality (not performed in our patient) is the Montenegro delayed skin-reaction test, which often is positive in patients with cutaneous leishmaniasis but also yields a positive result in patients who have been cured of Leishmania infection.6

An important consideration in the diagnostic workup of leishmaniasis is that collaboration with the CDC can be helpful, such as in our case, as they provide clear guidance for specimen collection and processing.2

Treatment—Treating leishmaniasis is challenging and complex. Even the initial decision to treat depends on several factors, including the form of infection. Most visceral and mucocutaneous infections should be treated due to both the lack of self-resolution of these forms and the higher risk for a potentially life-threatening disease course; in contrast, cutaneous forms require further consideration before initiating treatment. Some indicators for treating cutaneous leishmaniasis include widespread infection, intention to decrease scarring, and lesions with the potential to cause further complications (eg, on the face or ears or close to joints).6-8

The treatment of choice for cutaneous and mucocutaneous leishmaniasis is pentavalent antimony; however, this drug can only be obtained in the United States for investigational use, requiring approval by the CDC. A 20-day intravenous or intramuscular course of 20 mg/kg per day typically is used for cutaneous cases; a 28-day course typically is used for mucosal forms.

Amphotericin B is not only the treatment of choice for visceral leishmaniasis but also is an important alternative therapy for patients with mucosal leishmaniasis or who are co-infected with HIV. Patients with visceral infection also should receive supportive care for any concomitant afflictions, such as malnutrition or other infections. Although different regimens have been described, the US Food and Drug Administration has created outlines of specific intravenous infusion schedules for liposomal amphotericin B in immunocompetent and immunosuppressed patients.8 Liposomal amphotericin B also has a more favorable toxicity profile than conventional amphotericin B deoxycholate, which is otherwise effective in combating visceral leishmaniasis.6-8

Other treatments that have been attempted include pentamidine, miltefosine, thermotherapy, oral itraconazole and fluconazole, rifampicin, metronidazole and cotrimoxazole, dapsone, photodynamic therapy, thermotherapy, topical paromomycin formulations, intralesional pentavalent antimony, and laser cryotherapy. Notable among these other agents is miltefosine, a US Food and Drug Administration–approved oral medication for adults and adolescents (used off-label for patients younger than 12 years) with cutaneous leishmaniasis caused by L braziliensis, L panamensis, or L guyanensis. Other oral options mentioned include the so-called azole antifungal medications, which historically have produced variable results. From the CDC’s reports, ketoconazole was moderately effective in Guatemala and Panama,8 whereas itraconazole did not demonstrate efficacy in Colombia, and the efficacy of fluconazole was inconsistent in different countries.8 When considering one of the local (as opposed to oral and parenteral) therapies mentioned, the extent of cutaneous findings as well as the risk of mucosal spread should be factored in.6-8

Understandably, a number of considerations can come into play in determining the appropriate treatment modality, including body region affected, clinical form, severity, and Leishmania species.6-8 Our case is of particular interest because it demonstrates the complexities behind the diagnosis and treatment of cutaneous leishmaniasis, with careful consideration geared toward the species; for example, because our patient was infected with L panamensis, which is known to cause mucocutaneous disease, the infectious disease service decided to pursue systemic therapy with amphotericin B rather than topical treatment.

 

 

Prevention—Vector control is the primary means of preventing leishmaniasis under 2 umbrellas: environmental management and synthetic insecticides. The goal of environmental management is to eliminate the phlebotomine sandfly habitat; this was the primary method of vector control until 1940. Until that time, tree stumps were removed, indoor cracks and crevices were filled to prevent sandfly emergence, and areas around animal shelters were cleaned. These methods were highly dependent on community awareness and involvement; today, they can be combined with synthetic insecticides to offer maximum protection.

Synthetic insecticides include indoor sprays, treated nets, repellents, and impregnated dog collars, all of which control sandflies. However, the use of these insecticides in endemic areas, such as India, has driven development of insecticide resistance in many sandfly vector species.3

As of 2020, 5 vaccines against Leishmania have been created. Two are approved–one in Brazil and one in Uzbekistan–for human use as immunotherapy, while the other 3 have been developed to immunize dogs in Brazil. However, the effectiveness of these vaccines is under debate. First, one of the vaccines used as immunotherapy for cutaneous leishmaniasis must be used in combination with conventional chemotherapy; second, long-term effects of the canine vaccine are unknown.1 A preventive vaccine for humans is under development.1,3

Final Thoughts

Leishmaniasis remains a notable parasitic disease that is increasing in prevalence worldwide. Clinicians should be aware of this disease because early detection and treatment are essential to control infection.3 Health care providers in the United States should be especially aware of this condition among patients who have a history of travel or migration; those in Texas should recognize the current endemic status of leishmaniasis there.4,6

References
  1. Coutinho De Oliveira B, Duthie MS, Alves Pereira VR. Vaccines for leishmaniasis and the implications of their development for American tegumentary leishmaniasis. Hum Vaccin Immunother. 2020;16:919-930. doi:10.1080/21645515.2019.1678998
  2. Chan CX, Simmons BJ, Call JE, et al. Cutaneous leishmaniasis successfully treated with miltefosine. Cutis. 2020;106:206-209. doi:10.12788/cutis.0086
  3. Balaska S, Fotakis EA, Chaskopoulou A, et al. Chemical control and insecticide resistance status of sand fly vectors worldwide. PLoS Negl Trop Dis. 2021;15:E0009586. doi:10.1371/journal.pntd.0009586
  4. Desjeux P. Leishmaniasis. Nat Rev Microbiol. 2004;2:692. doi:10.1038/nrmicro981
  5. Michelutti A, Toniolo F, Bertola M, et al. Occurrence of Phlebotomine sand flies (Diptera: Psychodidae) in the northeastern plain of Italy. Parasit Vectors. 2021;14:164. doi:10.1186/s13071-021-04652-2
  6. Alkihan A, Hocker TLH. Infectious diseases: parasites and other creatures: protozoa. In: Alikhan A, Hocker TLH, eds. Review of Dermatology. Elsevier; 2024:329-331.
  7. Dinulos JGH. Infestations and bites. In: Habif TP, ed. Clinical Dermatology. Elsevier; 2016:630-634.
  8. Centers for Disease Control and Prevention. Leishmaniasis: resources for health professionals. US Department of Health and Human Services. March 20, 2023. Accessed October 5, 2023. https://www.cdc.gov/parasites/leishmaniasis/health_professionals/index.html#:~:text=Liposomal%20amphotericin%20B%20is%20FDA,treatment%20of%20choice%20for%20U.S
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The authors report no conflict of interest.

Correspondence: Caroline S. Zhu, MD, University of Texas Southwestern, Department of Dermatology, 5323 Harry Hines Blvd, Dallas, TX 75390 ([email protected]).

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The authors report no conflict of interest.

Correspondence: Caroline S. Zhu, MD, University of Texas Southwestern, Department of Dermatology, 5323 Harry Hines Blvd, Dallas, TX 75390 ([email protected]).

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Dr. Zhu is from the Department of Dermatology, University of Texas Southwestern, Dallas. Dr. Gillooly is from Dermatology Element, Wright-Patterson Air Force Base, Greene County, Ohio. Dr. Gilson is from the Department of Dermatology, UT Health Science Center, San Antonio.

The authors report no conflict of interest.

Correspondence: Caroline S. Zhu, MD, University of Texas Southwestern, Department of Dermatology, 5323 Harry Hines Blvd, Dallas, TX 75390 ([email protected]).

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The genus Leishmania comprises protozoan parasites that cause approximately 2 million new cases of leishmaniasis each year across 98 countries.1 These protozoa are obligate intracellular parasites of phlebotomine sandfly species that transmit leishmaniasis and result in a considerable parasitic cause of fatalities globally, second only to malaria.2,3

Phlebotomine sandflies primarily live in tropical and subtropical regions and function as vectors for many pathogens in addition to Leishmania species, such as Bartonella species and arboviruses.3 In 2004, it was noted that the majority of leishmaniasis cases affected developing countries: 90% of visceral leishmaniasis cases occurred in Bangladesh, India, Nepal, Sudan, and Brazil, and 90% of cutaneous leishmaniasis cases occurred in Afghanistan, Algeria, Brazil, Iran, Peru, Saudi Arabia, and Syria.4 Of note, with recent environmental changes, phlebotomine sandflies have gradually migrated to more northerly latitudes, extending into Europe.5

Twenty Leishmania species and 30 sandfly species have been identified as causes of leishmaniasis.4Leishmania infection occurs when an infected sandfly bites a mammalian host and transmits the parasite’s flagellated form, known as a promastigote. Host inflammatory cells, such as monocytes and dendritic cells, phagocytize parasites that enter the skin. The interaction between parasites and dendritic cells become an important factor in the outcome of Leishmania infection in the host because dendritic cells promote development of CD4 and CD8 T lymphocytes with specificity to target Leishmania parasites and protect the host.1

The number of cases of leishmaniasis has increased worldwide, most likely due to changes in the environment and human behaviors such as urbanization, the creation of new settlements, and migration from rural to urban areas.3,5 Important risk factors in individual patients include malnutrition; low-quality housing and sanitation; a history of migration or travel; and immunosuppression, such as that caused by HIV co-infection.2,5

Case Report

An otherwise healthy 25-year-old Bangladeshi man presented to our community hospital for evaluation of a painful leg ulcer of 1 month’s duration. The patient had migrated from Bangladesh to Panama, then to Costa Rica, followed by Guatemala, Honduras, Mexico, and, last, Texas. In Texas, he was identified by the US Immigration and Customs Enforcement, transported to a detention facility, and transferred to this hospital shortly afterward.

The patient reported that, during his extensive migration, he had lived in the jungle and reported what he described as mosquito bites on the legs. He subsequently developed a 3-cm ulcerated and crusted plaque with rolled borders on the right medial ankle (Figure 1). In addition, he had a palpable nodular cord on the medial leg from the ankle lesion to the mid thigh that was consistent with lymphocutaneous spread. Ultrasonography was negative for deep-vein thrombosis.

A single, 3-cm, ulcerated and crusted plaque with rolled borders on the right medial ankle.
FIGURE 1. A and B, A single, 3-cm, ulcerated and crusted plaque with rolled borders on the right medial ankle.

Because the patient’s recent migration from Central America was highly concerning for microbial infection, vancomycin and piperacillin-tazobactam were started empirically on admission. A punch biopsy from the right medial ankle was nondiagnostic, showing acute and chronic necrotizing inflammation along with numerous epithelioid histiocytes with a vaguely granulomatous appearance (Figure 2). A specimen from the right medial ankle that had already been taken by an astute border patrol medical provider was sent to the Centers for Disease Control and Prevention (CDC) for polymerase chain reaction analysis following admission and was found to be positive for Leishmania panamensis.

In addition to acute and chronic necrotizing inflammation, numerous histiocytes have a vaguely granulomatous appearance (H&E, original magnifications ×4 and ×10).
FIGURE 2. A and B, In addition to acute and chronic necrotizing inflammation, numerous histiocytes have a vaguely granulomatous appearance (H&E, original magnifications ×4 and ×10).

 

 

Given the concern for mucocutaneous leishmaniasis with this particular species, otolaryngology was consulted; however, the patient did not demonstrate mucocutaneous disease. Because of the elevated risk for persistent disease with L panamensis, systemic therapy was indicated and administered: IV amphotericin B 200 mg on days 1 through 5 and again on day 10. Improvement in the ulcer was seen after the 10-day regimen was completed.

Comment

Leishmaniasis can be broadly classified by geographic region or clinical presentation. Under the geographic region system, leishmaniasis can be categorized as Old World or New World. Old World leishmaniasis primarily is transmitted by Phlebotomus sandflies and carries the parasites Leishmania major and Leishmania tropica, among others. New World leishmaniasis is caused by Lutzomyia sandflies, which carry Leishmania mexicana, Leishmania braziliensis, Leishmania amazonensis, and others.6

Our patient presented with cutaneous leishmaniasis, one of 4 primary clinical disease forms of leishmaniasis; the other 3 forms under this classification system are diffuse cutaneous, mucocutaneous, and visceral leishmaniasis, also known as kala-azar.3,6 Cutaneous leishmaniasis is limited to the skin, particularly the face and extremities. This form is more common with Old World vectors, with most cases occurring in Peru, Brazil, and the Middle East. In Old World cutaneous leishmaniasis, the disease begins with a solitary nodule at the site of the bite that ulcerates and can continue to spread in a sporotrichoid pattern. This cutaneous form tends to heal slowly over months to years with residual scarring. New World cutaneous leishmaniasis can present with a variety of clinical manifestations, including ulcerative, sarcoidlike, miliary, and nodular lesions.6,7

The diffuse form of cutaneous leishmaniasis begins in a similar manner to the Old World cutaneous form: a single nodule spreads widely over the body, especially the nose, and covers the patient’s skin with keloidal or verrucous lesions that do not ulcerate. These nodules contain large groupings of Leishmania-filled foamy macrophages. Often, patients with diffuse cutaneous leishmaniasis are immunosuppressed and are unable to develop an immune response to leishmanin and other skin antigens.6,7

Mucocutaneous leishmaniasis predominantly is caused by the New World species L braziliensis but also has been attributed to L amazonensis, L panamensis, and L guyanensis. This form manifests as mucosal lesions that can develop simultaneously with cutaneous lesions but more commonly appear months to years after resolution of the skin infection. Patients often present with ulceration of the lip, nose, and oropharynx, and destruction of the nasopharynx can result in severe consequences such as obstruction of the airway and perforation of the nasal septum (also known as espundia).6,7

The most severe presentation of leishmaniasis is the visceral form (kala-azar), which presents with parasitic infection of the liver, spleen, and bone marrow. Most commonly caused by Leishmania donovani, Leishmania infantum, and Leishmania chagasi, this form has a long incubation period spanning months to years before presenting with diarrhea, hepatomegaly, splenomegaly, darkening of the skin (in Hindi, kala-azar means “black fever”), pancytopenia, lymphadenopathy, nephritis, and intestinal hemorrhage, among other severe manifestations. Visceral leishmaniasis has a poor prognosis: patients succumb to disease within 2 years if not treated.6,7

Diagnosis—Diagnosing leishmaniasis starts with a complete personal and medical history, paying close attention to travel and exposures. Diagnosis is most successfully performed by polymerase chain reaction analysis, which is both highly sensitive and specific but also can be determined by culture using Novy-McNeal-Nicolle medium or by light microscopy. Histologic findings include the marquee sign, which describes an array of amastigotes (promastigotes that have developed into the intracellular tissue-stage form) with kinetoplasts surrounding the periphery of parasitized histiocytes. Giemsa staining can be helpful in identifying organisms.2,6,7

 

 

The diagnosis in our case was challenging, as none of the above findings were seen in our patient. The specimen taken by the border patrol medical provider was negative on Gram, Giemsa, and Grocott-Gömöri methenamine silver staining; no amastigotes were identified. Another diagnostic modality (not performed in our patient) is the Montenegro delayed skin-reaction test, which often is positive in patients with cutaneous leishmaniasis but also yields a positive result in patients who have been cured of Leishmania infection.6

An important consideration in the diagnostic workup of leishmaniasis is that collaboration with the CDC can be helpful, such as in our case, as they provide clear guidance for specimen collection and processing.2

Treatment—Treating leishmaniasis is challenging and complex. Even the initial decision to treat depends on several factors, including the form of infection. Most visceral and mucocutaneous infections should be treated due to both the lack of self-resolution of these forms and the higher risk for a potentially life-threatening disease course; in contrast, cutaneous forms require further consideration before initiating treatment. Some indicators for treating cutaneous leishmaniasis include widespread infection, intention to decrease scarring, and lesions with the potential to cause further complications (eg, on the face or ears or close to joints).6-8

The treatment of choice for cutaneous and mucocutaneous leishmaniasis is pentavalent antimony; however, this drug can only be obtained in the United States for investigational use, requiring approval by the CDC. A 20-day intravenous or intramuscular course of 20 mg/kg per day typically is used for cutaneous cases; a 28-day course typically is used for mucosal forms.

Amphotericin B is not only the treatment of choice for visceral leishmaniasis but also is an important alternative therapy for patients with mucosal leishmaniasis or who are co-infected with HIV. Patients with visceral infection also should receive supportive care for any concomitant afflictions, such as malnutrition or other infections. Although different regimens have been described, the US Food and Drug Administration has created outlines of specific intravenous infusion schedules for liposomal amphotericin B in immunocompetent and immunosuppressed patients.8 Liposomal amphotericin B also has a more favorable toxicity profile than conventional amphotericin B deoxycholate, which is otherwise effective in combating visceral leishmaniasis.6-8

Other treatments that have been attempted include pentamidine, miltefosine, thermotherapy, oral itraconazole and fluconazole, rifampicin, metronidazole and cotrimoxazole, dapsone, photodynamic therapy, thermotherapy, topical paromomycin formulations, intralesional pentavalent antimony, and laser cryotherapy. Notable among these other agents is miltefosine, a US Food and Drug Administration–approved oral medication for adults and adolescents (used off-label for patients younger than 12 years) with cutaneous leishmaniasis caused by L braziliensis, L panamensis, or L guyanensis. Other oral options mentioned include the so-called azole antifungal medications, which historically have produced variable results. From the CDC’s reports, ketoconazole was moderately effective in Guatemala and Panama,8 whereas itraconazole did not demonstrate efficacy in Colombia, and the efficacy of fluconazole was inconsistent in different countries.8 When considering one of the local (as opposed to oral and parenteral) therapies mentioned, the extent of cutaneous findings as well as the risk of mucosal spread should be factored in.6-8

Understandably, a number of considerations can come into play in determining the appropriate treatment modality, including body region affected, clinical form, severity, and Leishmania species.6-8 Our case is of particular interest because it demonstrates the complexities behind the diagnosis and treatment of cutaneous leishmaniasis, with careful consideration geared toward the species; for example, because our patient was infected with L panamensis, which is known to cause mucocutaneous disease, the infectious disease service decided to pursue systemic therapy with amphotericin B rather than topical treatment.

 

 

Prevention—Vector control is the primary means of preventing leishmaniasis under 2 umbrellas: environmental management and synthetic insecticides. The goal of environmental management is to eliminate the phlebotomine sandfly habitat; this was the primary method of vector control until 1940. Until that time, tree stumps were removed, indoor cracks and crevices were filled to prevent sandfly emergence, and areas around animal shelters were cleaned. These methods were highly dependent on community awareness and involvement; today, they can be combined with synthetic insecticides to offer maximum protection.

Synthetic insecticides include indoor sprays, treated nets, repellents, and impregnated dog collars, all of which control sandflies. However, the use of these insecticides in endemic areas, such as India, has driven development of insecticide resistance in many sandfly vector species.3

As of 2020, 5 vaccines against Leishmania have been created. Two are approved–one in Brazil and one in Uzbekistan–for human use as immunotherapy, while the other 3 have been developed to immunize dogs in Brazil. However, the effectiveness of these vaccines is under debate. First, one of the vaccines used as immunotherapy for cutaneous leishmaniasis must be used in combination with conventional chemotherapy; second, long-term effects of the canine vaccine are unknown.1 A preventive vaccine for humans is under development.1,3

Final Thoughts

Leishmaniasis remains a notable parasitic disease that is increasing in prevalence worldwide. Clinicians should be aware of this disease because early detection and treatment are essential to control infection.3 Health care providers in the United States should be especially aware of this condition among patients who have a history of travel or migration; those in Texas should recognize the current endemic status of leishmaniasis there.4,6

The genus Leishmania comprises protozoan parasites that cause approximately 2 million new cases of leishmaniasis each year across 98 countries.1 These protozoa are obligate intracellular parasites of phlebotomine sandfly species that transmit leishmaniasis and result in a considerable parasitic cause of fatalities globally, second only to malaria.2,3

Phlebotomine sandflies primarily live in tropical and subtropical regions and function as vectors for many pathogens in addition to Leishmania species, such as Bartonella species and arboviruses.3 In 2004, it was noted that the majority of leishmaniasis cases affected developing countries: 90% of visceral leishmaniasis cases occurred in Bangladesh, India, Nepal, Sudan, and Brazil, and 90% of cutaneous leishmaniasis cases occurred in Afghanistan, Algeria, Brazil, Iran, Peru, Saudi Arabia, and Syria.4 Of note, with recent environmental changes, phlebotomine sandflies have gradually migrated to more northerly latitudes, extending into Europe.5

Twenty Leishmania species and 30 sandfly species have been identified as causes of leishmaniasis.4Leishmania infection occurs when an infected sandfly bites a mammalian host and transmits the parasite’s flagellated form, known as a promastigote. Host inflammatory cells, such as monocytes and dendritic cells, phagocytize parasites that enter the skin. The interaction between parasites and dendritic cells become an important factor in the outcome of Leishmania infection in the host because dendritic cells promote development of CD4 and CD8 T lymphocytes with specificity to target Leishmania parasites and protect the host.1

The number of cases of leishmaniasis has increased worldwide, most likely due to changes in the environment and human behaviors such as urbanization, the creation of new settlements, and migration from rural to urban areas.3,5 Important risk factors in individual patients include malnutrition; low-quality housing and sanitation; a history of migration or travel; and immunosuppression, such as that caused by HIV co-infection.2,5

Case Report

An otherwise healthy 25-year-old Bangladeshi man presented to our community hospital for evaluation of a painful leg ulcer of 1 month’s duration. The patient had migrated from Bangladesh to Panama, then to Costa Rica, followed by Guatemala, Honduras, Mexico, and, last, Texas. In Texas, he was identified by the US Immigration and Customs Enforcement, transported to a detention facility, and transferred to this hospital shortly afterward.

The patient reported that, during his extensive migration, he had lived in the jungle and reported what he described as mosquito bites on the legs. He subsequently developed a 3-cm ulcerated and crusted plaque with rolled borders on the right medial ankle (Figure 1). In addition, he had a palpable nodular cord on the medial leg from the ankle lesion to the mid thigh that was consistent with lymphocutaneous spread. Ultrasonography was negative for deep-vein thrombosis.

A single, 3-cm, ulcerated and crusted plaque with rolled borders on the right medial ankle.
FIGURE 1. A and B, A single, 3-cm, ulcerated and crusted plaque with rolled borders on the right medial ankle.

Because the patient’s recent migration from Central America was highly concerning for microbial infection, vancomycin and piperacillin-tazobactam were started empirically on admission. A punch biopsy from the right medial ankle was nondiagnostic, showing acute and chronic necrotizing inflammation along with numerous epithelioid histiocytes with a vaguely granulomatous appearance (Figure 2). A specimen from the right medial ankle that had already been taken by an astute border patrol medical provider was sent to the Centers for Disease Control and Prevention (CDC) for polymerase chain reaction analysis following admission and was found to be positive for Leishmania panamensis.

In addition to acute and chronic necrotizing inflammation, numerous histiocytes have a vaguely granulomatous appearance (H&E, original magnifications ×4 and ×10).
FIGURE 2. A and B, In addition to acute and chronic necrotizing inflammation, numerous histiocytes have a vaguely granulomatous appearance (H&E, original magnifications ×4 and ×10).

 

 

Given the concern for mucocutaneous leishmaniasis with this particular species, otolaryngology was consulted; however, the patient did not demonstrate mucocutaneous disease. Because of the elevated risk for persistent disease with L panamensis, systemic therapy was indicated and administered: IV amphotericin B 200 mg on days 1 through 5 and again on day 10. Improvement in the ulcer was seen after the 10-day regimen was completed.

Comment

Leishmaniasis can be broadly classified by geographic region or clinical presentation. Under the geographic region system, leishmaniasis can be categorized as Old World or New World. Old World leishmaniasis primarily is transmitted by Phlebotomus sandflies and carries the parasites Leishmania major and Leishmania tropica, among others. New World leishmaniasis is caused by Lutzomyia sandflies, which carry Leishmania mexicana, Leishmania braziliensis, Leishmania amazonensis, and others.6

Our patient presented with cutaneous leishmaniasis, one of 4 primary clinical disease forms of leishmaniasis; the other 3 forms under this classification system are diffuse cutaneous, mucocutaneous, and visceral leishmaniasis, also known as kala-azar.3,6 Cutaneous leishmaniasis is limited to the skin, particularly the face and extremities. This form is more common with Old World vectors, with most cases occurring in Peru, Brazil, and the Middle East. In Old World cutaneous leishmaniasis, the disease begins with a solitary nodule at the site of the bite that ulcerates and can continue to spread in a sporotrichoid pattern. This cutaneous form tends to heal slowly over months to years with residual scarring. New World cutaneous leishmaniasis can present with a variety of clinical manifestations, including ulcerative, sarcoidlike, miliary, and nodular lesions.6,7

The diffuse form of cutaneous leishmaniasis begins in a similar manner to the Old World cutaneous form: a single nodule spreads widely over the body, especially the nose, and covers the patient’s skin with keloidal or verrucous lesions that do not ulcerate. These nodules contain large groupings of Leishmania-filled foamy macrophages. Often, patients with diffuse cutaneous leishmaniasis are immunosuppressed and are unable to develop an immune response to leishmanin and other skin antigens.6,7

Mucocutaneous leishmaniasis predominantly is caused by the New World species L braziliensis but also has been attributed to L amazonensis, L panamensis, and L guyanensis. This form manifests as mucosal lesions that can develop simultaneously with cutaneous lesions but more commonly appear months to years after resolution of the skin infection. Patients often present with ulceration of the lip, nose, and oropharynx, and destruction of the nasopharynx can result in severe consequences such as obstruction of the airway and perforation of the nasal septum (also known as espundia).6,7

The most severe presentation of leishmaniasis is the visceral form (kala-azar), which presents with parasitic infection of the liver, spleen, and bone marrow. Most commonly caused by Leishmania donovani, Leishmania infantum, and Leishmania chagasi, this form has a long incubation period spanning months to years before presenting with diarrhea, hepatomegaly, splenomegaly, darkening of the skin (in Hindi, kala-azar means “black fever”), pancytopenia, lymphadenopathy, nephritis, and intestinal hemorrhage, among other severe manifestations. Visceral leishmaniasis has a poor prognosis: patients succumb to disease within 2 years if not treated.6,7

Diagnosis—Diagnosing leishmaniasis starts with a complete personal and medical history, paying close attention to travel and exposures. Diagnosis is most successfully performed by polymerase chain reaction analysis, which is both highly sensitive and specific but also can be determined by culture using Novy-McNeal-Nicolle medium or by light microscopy. Histologic findings include the marquee sign, which describes an array of amastigotes (promastigotes that have developed into the intracellular tissue-stage form) with kinetoplasts surrounding the periphery of parasitized histiocytes. Giemsa staining can be helpful in identifying organisms.2,6,7

 

 

The diagnosis in our case was challenging, as none of the above findings were seen in our patient. The specimen taken by the border patrol medical provider was negative on Gram, Giemsa, and Grocott-Gömöri methenamine silver staining; no amastigotes were identified. Another diagnostic modality (not performed in our patient) is the Montenegro delayed skin-reaction test, which often is positive in patients with cutaneous leishmaniasis but also yields a positive result in patients who have been cured of Leishmania infection.6

An important consideration in the diagnostic workup of leishmaniasis is that collaboration with the CDC can be helpful, such as in our case, as they provide clear guidance for specimen collection and processing.2

Treatment—Treating leishmaniasis is challenging and complex. Even the initial decision to treat depends on several factors, including the form of infection. Most visceral and mucocutaneous infections should be treated due to both the lack of self-resolution of these forms and the higher risk for a potentially life-threatening disease course; in contrast, cutaneous forms require further consideration before initiating treatment. Some indicators for treating cutaneous leishmaniasis include widespread infection, intention to decrease scarring, and lesions with the potential to cause further complications (eg, on the face or ears or close to joints).6-8

The treatment of choice for cutaneous and mucocutaneous leishmaniasis is pentavalent antimony; however, this drug can only be obtained in the United States for investigational use, requiring approval by the CDC. A 20-day intravenous or intramuscular course of 20 mg/kg per day typically is used for cutaneous cases; a 28-day course typically is used for mucosal forms.

Amphotericin B is not only the treatment of choice for visceral leishmaniasis but also is an important alternative therapy for patients with mucosal leishmaniasis or who are co-infected with HIV. Patients with visceral infection also should receive supportive care for any concomitant afflictions, such as malnutrition or other infections. Although different regimens have been described, the US Food and Drug Administration has created outlines of specific intravenous infusion schedules for liposomal amphotericin B in immunocompetent and immunosuppressed patients.8 Liposomal amphotericin B also has a more favorable toxicity profile than conventional amphotericin B deoxycholate, which is otherwise effective in combating visceral leishmaniasis.6-8

Other treatments that have been attempted include pentamidine, miltefosine, thermotherapy, oral itraconazole and fluconazole, rifampicin, metronidazole and cotrimoxazole, dapsone, photodynamic therapy, thermotherapy, topical paromomycin formulations, intralesional pentavalent antimony, and laser cryotherapy. Notable among these other agents is miltefosine, a US Food and Drug Administration–approved oral medication for adults and adolescents (used off-label for patients younger than 12 years) with cutaneous leishmaniasis caused by L braziliensis, L panamensis, or L guyanensis. Other oral options mentioned include the so-called azole antifungal medications, which historically have produced variable results. From the CDC’s reports, ketoconazole was moderately effective in Guatemala and Panama,8 whereas itraconazole did not demonstrate efficacy in Colombia, and the efficacy of fluconazole was inconsistent in different countries.8 When considering one of the local (as opposed to oral and parenteral) therapies mentioned, the extent of cutaneous findings as well as the risk of mucosal spread should be factored in.6-8

Understandably, a number of considerations can come into play in determining the appropriate treatment modality, including body region affected, clinical form, severity, and Leishmania species.6-8 Our case is of particular interest because it demonstrates the complexities behind the diagnosis and treatment of cutaneous leishmaniasis, with careful consideration geared toward the species; for example, because our patient was infected with L panamensis, which is known to cause mucocutaneous disease, the infectious disease service decided to pursue systemic therapy with amphotericin B rather than topical treatment.

 

 

Prevention—Vector control is the primary means of preventing leishmaniasis under 2 umbrellas: environmental management and synthetic insecticides. The goal of environmental management is to eliminate the phlebotomine sandfly habitat; this was the primary method of vector control until 1940. Until that time, tree stumps were removed, indoor cracks and crevices were filled to prevent sandfly emergence, and areas around animal shelters were cleaned. These methods were highly dependent on community awareness and involvement; today, they can be combined with synthetic insecticides to offer maximum protection.

Synthetic insecticides include indoor sprays, treated nets, repellents, and impregnated dog collars, all of which control sandflies. However, the use of these insecticides in endemic areas, such as India, has driven development of insecticide resistance in many sandfly vector species.3

As of 2020, 5 vaccines against Leishmania have been created. Two are approved–one in Brazil and one in Uzbekistan–for human use as immunotherapy, while the other 3 have been developed to immunize dogs in Brazil. However, the effectiveness of these vaccines is under debate. First, one of the vaccines used as immunotherapy for cutaneous leishmaniasis must be used in combination with conventional chemotherapy; second, long-term effects of the canine vaccine are unknown.1 A preventive vaccine for humans is under development.1,3

Final Thoughts

Leishmaniasis remains a notable parasitic disease that is increasing in prevalence worldwide. Clinicians should be aware of this disease because early detection and treatment are essential to control infection.3 Health care providers in the United States should be especially aware of this condition among patients who have a history of travel or migration; those in Texas should recognize the current endemic status of leishmaniasis there.4,6

References
  1. Coutinho De Oliveira B, Duthie MS, Alves Pereira VR. Vaccines for leishmaniasis and the implications of their development for American tegumentary leishmaniasis. Hum Vaccin Immunother. 2020;16:919-930. doi:10.1080/21645515.2019.1678998
  2. Chan CX, Simmons BJ, Call JE, et al. Cutaneous leishmaniasis successfully treated with miltefosine. Cutis. 2020;106:206-209. doi:10.12788/cutis.0086
  3. Balaska S, Fotakis EA, Chaskopoulou A, et al. Chemical control and insecticide resistance status of sand fly vectors worldwide. PLoS Negl Trop Dis. 2021;15:E0009586. doi:10.1371/journal.pntd.0009586
  4. Desjeux P. Leishmaniasis. Nat Rev Microbiol. 2004;2:692. doi:10.1038/nrmicro981
  5. Michelutti A, Toniolo F, Bertola M, et al. Occurrence of Phlebotomine sand flies (Diptera: Psychodidae) in the northeastern plain of Italy. Parasit Vectors. 2021;14:164. doi:10.1186/s13071-021-04652-2
  6. Alkihan A, Hocker TLH. Infectious diseases: parasites and other creatures: protozoa. In: Alikhan A, Hocker TLH, eds. Review of Dermatology. Elsevier; 2024:329-331.
  7. Dinulos JGH. Infestations and bites. In: Habif TP, ed. Clinical Dermatology. Elsevier; 2016:630-634.
  8. Centers for Disease Control and Prevention. Leishmaniasis: resources for health professionals. US Department of Health and Human Services. March 20, 2023. Accessed October 5, 2023. https://www.cdc.gov/parasites/leishmaniasis/health_professionals/index.html#:~:text=Liposomal%20amphotericin%20B%20is%20FDA,treatment%20of%20choice%20for%20U.S
References
  1. Coutinho De Oliveira B, Duthie MS, Alves Pereira VR. Vaccines for leishmaniasis and the implications of their development for American tegumentary leishmaniasis. Hum Vaccin Immunother. 2020;16:919-930. doi:10.1080/21645515.2019.1678998
  2. Chan CX, Simmons BJ, Call JE, et al. Cutaneous leishmaniasis successfully treated with miltefosine. Cutis. 2020;106:206-209. doi:10.12788/cutis.0086
  3. Balaska S, Fotakis EA, Chaskopoulou A, et al. Chemical control and insecticide resistance status of sand fly vectors worldwide. PLoS Negl Trop Dis. 2021;15:E0009586. doi:10.1371/journal.pntd.0009586
  4. Desjeux P. Leishmaniasis. Nat Rev Microbiol. 2004;2:692. doi:10.1038/nrmicro981
  5. Michelutti A, Toniolo F, Bertola M, et al. Occurrence of Phlebotomine sand flies (Diptera: Psychodidae) in the northeastern plain of Italy. Parasit Vectors. 2021;14:164. doi:10.1186/s13071-021-04652-2
  6. Alkihan A, Hocker TLH. Infectious diseases: parasites and other creatures: protozoa. In: Alikhan A, Hocker TLH, eds. Review of Dermatology. Elsevier; 2024:329-331.
  7. Dinulos JGH. Infestations and bites. In: Habif TP, ed. Clinical Dermatology. Elsevier; 2016:630-634.
  8. Centers for Disease Control and Prevention. Leishmaniasis: resources for health professionals. US Department of Health and Human Services. March 20, 2023. Accessed October 5, 2023. https://www.cdc.gov/parasites/leishmaniasis/health_professionals/index.html#:~:text=Liposomal%20amphotericin%20B%20is%20FDA,treatment%20of%20choice%20for%20U.S
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What’s Eating You? Phlebotomine Sandflies and Leishmania Parasites
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Practice Points

  • The Phlebotomus and Lutzomyia genera of sandflies are vectors of Leishmania parasites, which can result in an array of clinical findings associated with leishmaniasis.
  • Treatment options for leishmaniasis differ based on whether the infection is considered uncomplicated or complicated, which depends on the species of Leishmania; the number, size, and location of the lesion(s); and host immune status.
  • All US practitioners should be aware of this pathogen, especially with regard to patients who have a history of travel to other countries. Health care professionals in states such as Texas and Oklahoma should be especially cognizant because these constitute one of the few areas in the United States where locally acquired cases of leishmaniasis have been reported.
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Atopic Dermatitis Triggered by Omalizumab and Treated With Dupilumab

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Atopic Dermatitis Triggered by Omalizumab and Treated With Dupilumab

To the Editor:

A 16-year-old adolescent boy presented to our pediatric dermatology clinic for evaluation of long-standing mild atopic dermatitis (AD) that had become severe over the last year after omalizumab was initiated for severe asthma. The patient had a history of multiple hospitalizations for severe asthma. Despite excellent control of asthma with omalizumab given every 2 weeks, he developed widespread eczematous plaques on the neck, trunk, and extremities over the course of a year. The AD often was complicated by superimposed folliculitis due to scratching from severe pruritus. Treatment with topical corticosteroids including triamcinolone ointment 0.1% to AD on the body, plus clobetasol ointment 0.05% for prurigolike lesions on the legs resulted in modest improvement; however, the AD consistently recurred within a few days after the biweekly omalizumab injection (Figure 1). When the omalizumab injections were delayed, the flares temporarily improved, and when injections were decreased to once monthly, the exacerbations subsided partially but not fully.

 Erythematous plaques, xerosis, and lichenification on the patient’s right antecubital fossa, left antecubital fossa, right forearm, and left forearm, respectively, during an atopic dermatitis flare after omalizumab injection for asthma.
FIGURE 1. A–D, Erythematous plaques, xerosis, and lichenification on the patient’s right antecubital fossa, left antecubital fossa, right forearm, and left forearm, respectively, during an atopic dermatitis flare after omalizumab injection for asthma.

Because omalizumab resulted in dramatic improvement in the patient’s asthma, there was hesitation to discontinue it initially; however, the patient and his parents in conjunction with the dermatology and pulmonary teams decided to transition to dupilumab. The patient reported vast improvement of AD 1 month after initiation of dupilumab (Figure 2), which remained well controlled more than 1 year later. Mid-potency topical corticosteroids for the treatment of occasional mild eczematous flares on the extremities were used. The patient’s asthma has remained well controlled on dupilumab without any exacerbations.

Marked improvement of atopic dermatitis on both antecubital fossae and forearms, respectively, 1 month after dupilumab was started.
FIGURE 2. A and B, Marked improvement of atopic dermatitis on both antecubital fossae and forearms, respectively, 1 month after dupilumab was started.

Omalizumab is a recombinant DNA-derived humanized monoclonal antibody that binds both circulating and membrane-bound IgE. It has been proposed as a possible treatment for severe and/or recalcitrant AD, with mixed treatment results.1 A case series and review of 174 patients demonstrated a moderate to complete AD response to treatment with omalizumab in 74.1% of patients.2 The Atopic Dermatitis Anti-IgE Pediatric Trial (ADAPT) showed a statistically significant reduction in the Scoring Atopic Dermatitis (SCORAD) index (P=.01), along with improved quality of life in children treated with omalizumab vs those treated with placebo.3 However, a prior randomized, placebo-controlled, double-blind study did not show a significant difference in clinical disease parameters in patients treated with omalizumab.4

The humanized monoclonal antibody dupilumab, an anti–IL-4/IL-13 agent, has demonstrated more consistent efficacy for the treatment of AD in children and adults.1 Dupilumab is effective for both intrinsic and extrinsic AD1 because its clinical efficacy is unrelated to circulating levels of IgE in the bloodstream. Although IgE may have a role in childhood AD, our case demonstrated a different pathophysiologic mechanism independent of IgE. Our patient’s AD flares occurred within a few days of omalizumab injection, which may have resulted in a paradoxical increase in basophil sensitivity to other cytokines such as IL-335 and led to an increase in IL-4/IL-13 production within the skin. In our patient, this increase was successfully blocked by dupilumab. Furthermore, omalizumab has been shown to modulate helper T cell (TH2) cytokine response such as thymic stromal lymphopoietin.6 A cytokine imbalance could have exacerbated AD in our case.

Although additional work to clarify the pathogenesis of AD is needed, it is important to recognize the potential for the occurrence of paradoxical AD flares in patients treated with omalizumab, which is analogous to the well-documented entity of tumor necrosis factor α inhibitor–induced psoriasis. It is equally important to recognize the potential benefit for patients treated with dupilumab.

References
  1. Nygaard U, Vestergaard C, Deleuran M. Emerging treatment options in atopic dermatitis: systemic therapies. Dermatology. 2017;233:344-357.
  2. Holm JG, Agner T, Sand C, et al. Omalizumab for atopic dermatitis: case series and a systematic review of the literature. Int J Dermatol. 2017;56:18-26.
  3. Chan S, Cornelius V, Cro S, et al. Treatment effect of omalizumab on severe pediatric atopic dermatitis: the ADAPT randomized clinical trial. JAMA Pediatr. 2020;174:29-37.
  4. Heil PM, Maurer D, Klein B, et al. Omalizumab therapy in atopic dermatitis: depletion of IgE does not improve the clinical course – a randomized placebo-controlled and double blind pilot study. J Dtsch Dermatol Ges. 2010;8:990-998.
  5. Imai Y. Interleukin-33 in atopic dermatitis. J Dermatol Sci. 2019;96:2-7.
  6. Iyengar SR, Hoyte EG, Loza A, et al. Immunologic effects of omalizumab in children with severe refractory atopic dermatitis: a randomized, placebo-controlled clinical trial. Int Arch Allergy Immunol. 2013;162:89-93.
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Dr. Yanovsky is from the Tufts University School of Medicine, Boston, Massachusetts. Drs. Mitre and Chernoff are from the Department of Dermatology, Weill Cornell Medical College, New York, New York.

The authors report no conflict of interest.

Correspondence: Karen A. Chernoff, MD, Weill Cornell Medical College, Department of Dermatology, 1305 York Ave, 9th Floor, New York, NY 10021 ([email protected]).

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Dr. Yanovsky is from the Tufts University School of Medicine, Boston, Massachusetts. Drs. Mitre and Chernoff are from the Department of Dermatology, Weill Cornell Medical College, New York, New York.

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Correspondence: Karen A. Chernoff, MD, Weill Cornell Medical College, Department of Dermatology, 1305 York Ave, 9th Floor, New York, NY 10021 ([email protected]).

Author and Disclosure Information

Dr. Yanovsky is from the Tufts University School of Medicine, Boston, Massachusetts. Drs. Mitre and Chernoff are from the Department of Dermatology, Weill Cornell Medical College, New York, New York.

The authors report no conflict of interest.

Correspondence: Karen A. Chernoff, MD, Weill Cornell Medical College, Department of Dermatology, 1305 York Ave, 9th Floor, New York, NY 10021 ([email protected]).

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To the Editor:

A 16-year-old adolescent boy presented to our pediatric dermatology clinic for evaluation of long-standing mild atopic dermatitis (AD) that had become severe over the last year after omalizumab was initiated for severe asthma. The patient had a history of multiple hospitalizations for severe asthma. Despite excellent control of asthma with omalizumab given every 2 weeks, he developed widespread eczematous plaques on the neck, trunk, and extremities over the course of a year. The AD often was complicated by superimposed folliculitis due to scratching from severe pruritus. Treatment with topical corticosteroids including triamcinolone ointment 0.1% to AD on the body, plus clobetasol ointment 0.05% for prurigolike lesions on the legs resulted in modest improvement; however, the AD consistently recurred within a few days after the biweekly omalizumab injection (Figure 1). When the omalizumab injections were delayed, the flares temporarily improved, and when injections were decreased to once monthly, the exacerbations subsided partially but not fully.

 Erythematous plaques, xerosis, and lichenification on the patient’s right antecubital fossa, left antecubital fossa, right forearm, and left forearm, respectively, during an atopic dermatitis flare after omalizumab injection for asthma.
FIGURE 1. A–D, Erythematous plaques, xerosis, and lichenification on the patient’s right antecubital fossa, left antecubital fossa, right forearm, and left forearm, respectively, during an atopic dermatitis flare after omalizumab injection for asthma.

Because omalizumab resulted in dramatic improvement in the patient’s asthma, there was hesitation to discontinue it initially; however, the patient and his parents in conjunction with the dermatology and pulmonary teams decided to transition to dupilumab. The patient reported vast improvement of AD 1 month after initiation of dupilumab (Figure 2), which remained well controlled more than 1 year later. Mid-potency topical corticosteroids for the treatment of occasional mild eczematous flares on the extremities were used. The patient’s asthma has remained well controlled on dupilumab without any exacerbations.

Marked improvement of atopic dermatitis on both antecubital fossae and forearms, respectively, 1 month after dupilumab was started.
FIGURE 2. A and B, Marked improvement of atopic dermatitis on both antecubital fossae and forearms, respectively, 1 month after dupilumab was started.

Omalizumab is a recombinant DNA-derived humanized monoclonal antibody that binds both circulating and membrane-bound IgE. It has been proposed as a possible treatment for severe and/or recalcitrant AD, with mixed treatment results.1 A case series and review of 174 patients demonstrated a moderate to complete AD response to treatment with omalizumab in 74.1% of patients.2 The Atopic Dermatitis Anti-IgE Pediatric Trial (ADAPT) showed a statistically significant reduction in the Scoring Atopic Dermatitis (SCORAD) index (P=.01), along with improved quality of life in children treated with omalizumab vs those treated with placebo.3 However, a prior randomized, placebo-controlled, double-blind study did not show a significant difference in clinical disease parameters in patients treated with omalizumab.4

The humanized monoclonal antibody dupilumab, an anti–IL-4/IL-13 agent, has demonstrated more consistent efficacy for the treatment of AD in children and adults.1 Dupilumab is effective for both intrinsic and extrinsic AD1 because its clinical efficacy is unrelated to circulating levels of IgE in the bloodstream. Although IgE may have a role in childhood AD, our case demonstrated a different pathophysiologic mechanism independent of IgE. Our patient’s AD flares occurred within a few days of omalizumab injection, which may have resulted in a paradoxical increase in basophil sensitivity to other cytokines such as IL-335 and led to an increase in IL-4/IL-13 production within the skin. In our patient, this increase was successfully blocked by dupilumab. Furthermore, omalizumab has been shown to modulate helper T cell (TH2) cytokine response such as thymic stromal lymphopoietin.6 A cytokine imbalance could have exacerbated AD in our case.

Although additional work to clarify the pathogenesis of AD is needed, it is important to recognize the potential for the occurrence of paradoxical AD flares in patients treated with omalizumab, which is analogous to the well-documented entity of tumor necrosis factor α inhibitor–induced psoriasis. It is equally important to recognize the potential benefit for patients treated with dupilumab.

To the Editor:

A 16-year-old adolescent boy presented to our pediatric dermatology clinic for evaluation of long-standing mild atopic dermatitis (AD) that had become severe over the last year after omalizumab was initiated for severe asthma. The patient had a history of multiple hospitalizations for severe asthma. Despite excellent control of asthma with omalizumab given every 2 weeks, he developed widespread eczematous plaques on the neck, trunk, and extremities over the course of a year. The AD often was complicated by superimposed folliculitis due to scratching from severe pruritus. Treatment with topical corticosteroids including triamcinolone ointment 0.1% to AD on the body, plus clobetasol ointment 0.05% for prurigolike lesions on the legs resulted in modest improvement; however, the AD consistently recurred within a few days after the biweekly omalizumab injection (Figure 1). When the omalizumab injections were delayed, the flares temporarily improved, and when injections were decreased to once monthly, the exacerbations subsided partially but not fully.

 Erythematous plaques, xerosis, and lichenification on the patient’s right antecubital fossa, left antecubital fossa, right forearm, and left forearm, respectively, during an atopic dermatitis flare after omalizumab injection for asthma.
FIGURE 1. A–D, Erythematous plaques, xerosis, and lichenification on the patient’s right antecubital fossa, left antecubital fossa, right forearm, and left forearm, respectively, during an atopic dermatitis flare after omalizumab injection for asthma.

Because omalizumab resulted in dramatic improvement in the patient’s asthma, there was hesitation to discontinue it initially; however, the patient and his parents in conjunction with the dermatology and pulmonary teams decided to transition to dupilumab. The patient reported vast improvement of AD 1 month after initiation of dupilumab (Figure 2), which remained well controlled more than 1 year later. Mid-potency topical corticosteroids for the treatment of occasional mild eczematous flares on the extremities were used. The patient’s asthma has remained well controlled on dupilumab without any exacerbations.

Marked improvement of atopic dermatitis on both antecubital fossae and forearms, respectively, 1 month after dupilumab was started.
FIGURE 2. A and B, Marked improvement of atopic dermatitis on both antecubital fossae and forearms, respectively, 1 month after dupilumab was started.

Omalizumab is a recombinant DNA-derived humanized monoclonal antibody that binds both circulating and membrane-bound IgE. It has been proposed as a possible treatment for severe and/or recalcitrant AD, with mixed treatment results.1 A case series and review of 174 patients demonstrated a moderate to complete AD response to treatment with omalizumab in 74.1% of patients.2 The Atopic Dermatitis Anti-IgE Pediatric Trial (ADAPT) showed a statistically significant reduction in the Scoring Atopic Dermatitis (SCORAD) index (P=.01), along with improved quality of life in children treated with omalizumab vs those treated with placebo.3 However, a prior randomized, placebo-controlled, double-blind study did not show a significant difference in clinical disease parameters in patients treated with omalizumab.4

The humanized monoclonal antibody dupilumab, an anti–IL-4/IL-13 agent, has demonstrated more consistent efficacy for the treatment of AD in children and adults.1 Dupilumab is effective for both intrinsic and extrinsic AD1 because its clinical efficacy is unrelated to circulating levels of IgE in the bloodstream. Although IgE may have a role in childhood AD, our case demonstrated a different pathophysiologic mechanism independent of IgE. Our patient’s AD flares occurred within a few days of omalizumab injection, which may have resulted in a paradoxical increase in basophil sensitivity to other cytokines such as IL-335 and led to an increase in IL-4/IL-13 production within the skin. In our patient, this increase was successfully blocked by dupilumab. Furthermore, omalizumab has been shown to modulate helper T cell (TH2) cytokine response such as thymic stromal lymphopoietin.6 A cytokine imbalance could have exacerbated AD in our case.

Although additional work to clarify the pathogenesis of AD is needed, it is important to recognize the potential for the occurrence of paradoxical AD flares in patients treated with omalizumab, which is analogous to the well-documented entity of tumor necrosis factor α inhibitor–induced psoriasis. It is equally important to recognize the potential benefit for patients treated with dupilumab.

References
  1. Nygaard U, Vestergaard C, Deleuran M. Emerging treatment options in atopic dermatitis: systemic therapies. Dermatology. 2017;233:344-357.
  2. Holm JG, Agner T, Sand C, et al. Omalizumab for atopic dermatitis: case series and a systematic review of the literature. Int J Dermatol. 2017;56:18-26.
  3. Chan S, Cornelius V, Cro S, et al. Treatment effect of omalizumab on severe pediatric atopic dermatitis: the ADAPT randomized clinical trial. JAMA Pediatr. 2020;174:29-37.
  4. Heil PM, Maurer D, Klein B, et al. Omalizumab therapy in atopic dermatitis: depletion of IgE does not improve the clinical course – a randomized placebo-controlled and double blind pilot study. J Dtsch Dermatol Ges. 2010;8:990-998.
  5. Imai Y. Interleukin-33 in atopic dermatitis. J Dermatol Sci. 2019;96:2-7.
  6. Iyengar SR, Hoyte EG, Loza A, et al. Immunologic effects of omalizumab in children with severe refractory atopic dermatitis: a randomized, placebo-controlled clinical trial. Int Arch Allergy Immunol. 2013;162:89-93.
References
  1. Nygaard U, Vestergaard C, Deleuran M. Emerging treatment options in atopic dermatitis: systemic therapies. Dermatology. 2017;233:344-357.
  2. Holm JG, Agner T, Sand C, et al. Omalizumab for atopic dermatitis: case series and a systematic review of the literature. Int J Dermatol. 2017;56:18-26.
  3. Chan S, Cornelius V, Cro S, et al. Treatment effect of omalizumab on severe pediatric atopic dermatitis: the ADAPT randomized clinical trial. JAMA Pediatr. 2020;174:29-37.
  4. Heil PM, Maurer D, Klein B, et al. Omalizumab therapy in atopic dermatitis: depletion of IgE does not improve the clinical course – a randomized placebo-controlled and double blind pilot study. J Dtsch Dermatol Ges. 2010;8:990-998.
  5. Imai Y. Interleukin-33 in atopic dermatitis. J Dermatol Sci. 2019;96:2-7.
  6. Iyengar SR, Hoyte EG, Loza A, et al. Immunologic effects of omalizumab in children with severe refractory atopic dermatitis: a randomized, placebo-controlled clinical trial. Int Arch Allergy Immunol. 2013;162:89-93.
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Atopic Dermatitis Triggered by Omalizumab and Treated With Dupilumab
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Practice Points

  • Monoclonal antibodies are promising therapies for atopic conditions, although its efficacy for atopic dermatitis (AD) is debated and the side-effect profile is not entirely known.
  • Omalizumab may cause a paradoxical exacerbation of AD in select patients analogous to tumor necrosis factor α inhibitor–induced psoriasis.
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Narcolepsy med shows early promise for adult ADHD

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TOPLINE:

Solriamfetol – a medication approved for excessive daytime sleepiness caused by narcolepsy or obstructive sleep apnea – significantly improved symptoms of attention-deficit/hyperactivity disorder (ADHD) and clinical impression of ADHD severity in a pilot study of adults with ADHD.

METHODOLOGY:

  • Solriamfetol is a dopamine and norepinephrine reuptake inhibitor that shares some of the properties of current ADHD medications.
  • Researchers conducted a randomized, double-blind, placebo-controlled, dose-optimization trial of 75- or 150-mg solriamfetol in 60 adults with ADHD. For nearly all of the individuals who received solriamfetol, doses increased to 150 mg after the first week.
  • The primary outcome was change in scores on the Adult ADHD Investigator Symptom Rating Scale (AISRS).
  • Secondary outcomes included scores on the Clinical Global Impressions (CGI) scale and standard measures of executive function, behavior, and sleep.

TAKEAWAY:

  • By week 6, total AISRS score improved 25% for 52% of individuals to took solriamfetol, vs. 17% of those who received placebo. Total AISRS score improved 50% by week 6 in 28% of those who took solriamfetol, vs. 3.4% of those who received placebo.
  • By week 6, CGI ratings of “much improved” or “very much improved” occurred in significantly more individuals who received solriamfetol than those who took placebo (45% vs. 7%).
  • Significantly more individuals who received solriamfetol than placebo self-reported improvements in executive function (69% vs. 34%). Improvement in wakefulness was noted with solriamfetol, but that did not moderate the change in ADHD symptom burden.
  • Solriamfetol was well tolerated, with no significant effect on sleep quality or blood pressure. Adverse effects that occurred at a higher rate in the treatment group than in the placebo group were typical for solriamfetol and sympathomimetic agents used for ADHD.

IN PRACTICE:

Massachusetts General Hospital
Dr. Craig B.H. Surman

“Solriamfetol may be a safe and effective treatment for ADHD in adults. Larger studies replicating these findings could confirm the strong evidence of benefit and the tolerability of this agent as a treatment,” lead author Craig B.H. Surman, MD, director of the clinical and research program in adult ADHD, Massachusetts General Hospital, Boston, said in a statement.

SOURCE:

The study was published online in The Journal of Clinical Psychiatry.

LIMITATIONS:

Limitations include the small sample size and short 6-week duration. More women than men received solriamfetol; it’s unclear how this could have affected the results.

DISCLOSURES:

The study was an investigator-initiated trial supported by Jazz Pharmaceuticals and Axsome Therapeutics. Dr. Surman has received consultant fees, research support, and royalties from multiple companies.

A version of this article first appeared on Medscape.com.

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TOPLINE:

Solriamfetol – a medication approved for excessive daytime sleepiness caused by narcolepsy or obstructive sleep apnea – significantly improved symptoms of attention-deficit/hyperactivity disorder (ADHD) and clinical impression of ADHD severity in a pilot study of adults with ADHD.

METHODOLOGY:

  • Solriamfetol is a dopamine and norepinephrine reuptake inhibitor that shares some of the properties of current ADHD medications.
  • Researchers conducted a randomized, double-blind, placebo-controlled, dose-optimization trial of 75- or 150-mg solriamfetol in 60 adults with ADHD. For nearly all of the individuals who received solriamfetol, doses increased to 150 mg after the first week.
  • The primary outcome was change in scores on the Adult ADHD Investigator Symptom Rating Scale (AISRS).
  • Secondary outcomes included scores on the Clinical Global Impressions (CGI) scale and standard measures of executive function, behavior, and sleep.

TAKEAWAY:

  • By week 6, total AISRS score improved 25% for 52% of individuals to took solriamfetol, vs. 17% of those who received placebo. Total AISRS score improved 50% by week 6 in 28% of those who took solriamfetol, vs. 3.4% of those who received placebo.
  • By week 6, CGI ratings of “much improved” or “very much improved” occurred in significantly more individuals who received solriamfetol than those who took placebo (45% vs. 7%).
  • Significantly more individuals who received solriamfetol than placebo self-reported improvements in executive function (69% vs. 34%). Improvement in wakefulness was noted with solriamfetol, but that did not moderate the change in ADHD symptom burden.
  • Solriamfetol was well tolerated, with no significant effect on sleep quality or blood pressure. Adverse effects that occurred at a higher rate in the treatment group than in the placebo group were typical for solriamfetol and sympathomimetic agents used for ADHD.

IN PRACTICE:

Massachusetts General Hospital
Dr. Craig B.H. Surman

“Solriamfetol may be a safe and effective treatment for ADHD in adults. Larger studies replicating these findings could confirm the strong evidence of benefit and the tolerability of this agent as a treatment,” lead author Craig B.H. Surman, MD, director of the clinical and research program in adult ADHD, Massachusetts General Hospital, Boston, said in a statement.

SOURCE:

The study was published online in The Journal of Clinical Psychiatry.

LIMITATIONS:

Limitations include the small sample size and short 6-week duration. More women than men received solriamfetol; it’s unclear how this could have affected the results.

DISCLOSURES:

The study was an investigator-initiated trial supported by Jazz Pharmaceuticals and Axsome Therapeutics. Dr. Surman has received consultant fees, research support, and royalties from multiple companies.

A version of this article first appeared on Medscape.com.

 

TOPLINE:

Solriamfetol – a medication approved for excessive daytime sleepiness caused by narcolepsy or obstructive sleep apnea – significantly improved symptoms of attention-deficit/hyperactivity disorder (ADHD) and clinical impression of ADHD severity in a pilot study of adults with ADHD.

METHODOLOGY:

  • Solriamfetol is a dopamine and norepinephrine reuptake inhibitor that shares some of the properties of current ADHD medications.
  • Researchers conducted a randomized, double-blind, placebo-controlled, dose-optimization trial of 75- or 150-mg solriamfetol in 60 adults with ADHD. For nearly all of the individuals who received solriamfetol, doses increased to 150 mg after the first week.
  • The primary outcome was change in scores on the Adult ADHD Investigator Symptom Rating Scale (AISRS).
  • Secondary outcomes included scores on the Clinical Global Impressions (CGI) scale and standard measures of executive function, behavior, and sleep.

TAKEAWAY:

  • By week 6, total AISRS score improved 25% for 52% of individuals to took solriamfetol, vs. 17% of those who received placebo. Total AISRS score improved 50% by week 6 in 28% of those who took solriamfetol, vs. 3.4% of those who received placebo.
  • By week 6, CGI ratings of “much improved” or “very much improved” occurred in significantly more individuals who received solriamfetol than those who took placebo (45% vs. 7%).
  • Significantly more individuals who received solriamfetol than placebo self-reported improvements in executive function (69% vs. 34%). Improvement in wakefulness was noted with solriamfetol, but that did not moderate the change in ADHD symptom burden.
  • Solriamfetol was well tolerated, with no significant effect on sleep quality or blood pressure. Adverse effects that occurred at a higher rate in the treatment group than in the placebo group were typical for solriamfetol and sympathomimetic agents used for ADHD.

IN PRACTICE:

Massachusetts General Hospital
Dr. Craig B.H. Surman

“Solriamfetol may be a safe and effective treatment for ADHD in adults. Larger studies replicating these findings could confirm the strong evidence of benefit and the tolerability of this agent as a treatment,” lead author Craig B.H. Surman, MD, director of the clinical and research program in adult ADHD, Massachusetts General Hospital, Boston, said in a statement.

SOURCE:

The study was published online in The Journal of Clinical Psychiatry.

LIMITATIONS:

Limitations include the small sample size and short 6-week duration. More women than men received solriamfetol; it’s unclear how this could have affected the results.

DISCLOSURES:

The study was an investigator-initiated trial supported by Jazz Pharmaceuticals and Axsome Therapeutics. Dr. Surman has received consultant fees, research support, and royalties from multiple companies.

A version of this article first appeared on Medscape.com.

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‘Diagnosis creep’: Are some AFib patients overtreated?

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Tue, 10/17/2023 - 15:36

The issue of earlier classification of medical conditions – known as “diagnosis creep” – is leading to many patients becoming eligible for treatments at earlier stages in their disease course, without those treatments having been validated in those particular groups.

This concern has been highlighted recently in the atrial fibrillation (AF) field, with the recent change in the definition of hypertension in the United States at lower levels of blood pressure causing a lot more patients to become eligible for oral anticoagulation at an earlier stage in their AF course.

U.S. researchers analyzed data from 316,388 patients with AF from the National Cardiovascular Data Registry Practice Innovation and Clinical Excellence outpatient quality improvement registry, and found that at 36 months’ follow-up, 83.5% of patients met the new 130/80 mm Hg definition of hypertension, while only 53.3% met the previous 140/90 mm Hg definition.

The diagnosis of hypertension gives 1 point in the CHA2DS2-VASc score, which is used to determine risk in AF patients, those with scores of 2 or more being eligible for oral anticoagulation.

The researchers report that in patients with an index CHA2DS2-VASc score of 1 (before the hypertension diagnosis), at 36 months, 83% fulfilled the 130/80 mm Hg definition of hypertension while the 140/90 mm Hg definition was met by only 50%, giving a large increase in the number of patients who could qualify for oral anticoagulation therapy.

“While the definition of hypertension has changed in response to landmark clinical trials, CHA2DS2-VASc was validated using an older hypertension definition, with limited ambulatory blood pressure monitoring and higher blood pressure goals for treatment,” the authors state.

“Now, patients with AF will meet the CHA2DS2-VASc threshold for oral anticoagulation earlier in their disease course. However, it is not known if patients with scores of 1 or 2 using the new hypertension definition have sufficient stroke risk to offset the bleeding risk of oral anticoagulation and will receive net clinical benefit,” they point out.

This study was published online as a research letter in JAMA Network Open.

Senior author of the report, Mintu Turakhia, MD, Stanford (Calif.) University/iRhythm Technologies Inc., said AF is a good example of how “diagnosis creep” may lead to patients receiving inappropriate treatment.

“Risk scores derived when risk variables were described in one way are starting to be applied based on a diagnosis made in a totally different way,” he said in an interview. “Diagnosis creep is a problem everywhere in medicine. The goal of this study was to quantify what this means for the new definition of hypertension in the context of risk scoring AF patients for anticoagulation treatment. We are calling attention to this issue so clinicians are aware of possible implications.”

Dr. Turakhia explained that the CHA2DS2-VASc score was formulated based on claims data so there was a record of hypertension on the clinical encounter. That hypertension diagnosis would have been based on the old definition of 140/90 mm Hg.

“But now we apply a label of hypertension in the office every time someone has a measurement of elevated blood pressure – treated or untreated – and the blood pressure threshold for a hypertension diagnosis has changed to 130/80 mm Hg,” he said. “We are asking what this means for risk stratification scores such as CHA2DS2-VASc, and how do we quantify what that means for anticoagulation eligibility?”

He said that while identifying hypertension at lower blood pressures may be beneficial with regard to starting antihypertensive treatment earlier with a consequent reduction in cardiovascular outcomes, when this also affects risk scores that determine treatment for other conditions, as is the case for AF, the case is not so clear.

Dr. Turakhia pointed out that with AF, there are additional factors causing diagnosis creep, including earlier detection of AF and identification of shorter episodes due to the use of higher sensitivity tools to detect abnormal rhythms.

“What about the patient who has been identified as having AF based on just a few seconds found on monitoring and who is aged 65 (so just over the age threshold for 1 point on the CHA2DS2-VASc score)?” he asked. “Now we’re going to throw in hypertension with a blood pressure measurement just over 130/80 mm Hg, and they will be eligible for anticoagulation.”

Dr. Turakhia noted that in addition to earlier classification of hypertension, other conditions contributing to the CHA2DS2-VASc score are also being detected earlier, including diabetes and reduced ejection fractions that are considered heart failure.

“I worry about the sum of the parts. We don’t know if the risk score performs equally well when we’re using these different thresholds. We have to be careful that we are not exposing patients to the bleeding risks of anticoagulation unnecessarily. There is a clear issue here,” he said.
 

 

 

What should clinicians do?

In a comment, Gregory Lip, MD, chair of cardiovascular medicine at the University of Liverpool, England, who helped develop the CHA2DS2-VASc score, said clinicians needed to think more broadly when considering hypertension as a risk factor for the score.

He points out that if a patient had a history of hypertension but is now controlled to below 130/80 mm Hg, they would still be considered to be at risk per the CHA2DS2-VASc score.

And for patients without a history of hypertension, and who have a current blood pressure measurement of around 130/80 mm Hg, Dr. Lip advises that it would be premature to diagnose hypertension immediately.

“Hypertension is not a yes/no diagnosis. If you look at the relationship between blood pressure and risk of stroke, it is like a continual dose-response. It doesn’t mean that at 129/79 there is no stroke risk but that at 130/80 there is a stroke risk. It’s not like that,” he said.

“I wouldn’t make a diagnosis on a one-off blood pressure measurement. I would want to monitor that patient and get them to do home measurements,” he commented. “If someone constantly has levels around that 130/80 mm Hg, I don’t necessarily rush in with a definite diagnosis of hypertension and start drug treatment. I would look at lifestyle first. And in such patients, I wouldn’t give them the 1 point for hypertension on the CHA2DS2-VASc score.”

Dr. Lip points out that a hypertension diagnosis is not just about blood pressure numbers. “We have to assess the patients much more completely before giving them a diagnosis and consider factors such as whether there is evidence of hypertension-related end-organ damage, and if lifestyle issues have been addressed.”
 

Are new risk scores needed?

Dr. Turakhia agreed that clinicians need to look at the bigger picture, but he also suggested that new risk scores may need to be developed.

“All of us in the medical community need to think about whether we should be recalibrating risk prediction with more contemporary evidence – based on our ability to detect disease now,” he commented.

“This could even be a different risk score altogether, possibly incorporating a wider range of parameters or perhaps incorporating machine learning. That’s really the question we need to be asking ourselves,” Dr. Turakhia added.

Dr. Lip noted that there are many stroke risk factors and only those that are most common and have been well validated go into clinical risk scores such as CHA2DS2-VASc.

“These risks scores are by design simplifications, and only have modest predictive value for identifying patients at high risk of stroke. You can always improve on clinical risk scores by adding in other variables,” he said. “There are some risk scores in AF with 26 variables. But the practical application of these more complex scores can be difficult in clinical practice. These risks scores are meant to be simple so that they can be used by busy clinicians in the outpatient clinic or on a ward round. It is not easy to input 26 different variables.”

He also noted that many guidelines are now veering away from categorizing patients at high, medium, or low risk of stroke, which he refers to as “artificial” classifications. “There is now more of a default position that patients should receive stroke prevention normally with a DOAC [direct oral anticoagulant] unless they are low risk.”

Dr. Turakhia agreed that it is imperative to look at the bigger picture when identifying AF patients for anticoagulation. “We have to be careful not to take things at face value. It is more important than ever to use clinical judgment to avoid overtreatment in borderline situations,” he concluded.

This study was supported by the American College of Cardiology Foundation’s National Cardiovascular Data Registry. Dr. Turakhia reported employment from iRhythm Technologies; equity from AliveCor, Connect America, Evidently, and Forward; grants from U.S. Food and Drug Administration, American Heart Association, Bayer, Sanofi, Gilead, and Bristol Myers Squibb; and personal fees from Pfizer and JAMA Cardiology (prior associate editor) outside the submitted work. Dr. Lip has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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The issue of earlier classification of medical conditions – known as “diagnosis creep” – is leading to many patients becoming eligible for treatments at earlier stages in their disease course, without those treatments having been validated in those particular groups.

This concern has been highlighted recently in the atrial fibrillation (AF) field, with the recent change in the definition of hypertension in the United States at lower levels of blood pressure causing a lot more patients to become eligible for oral anticoagulation at an earlier stage in their AF course.

U.S. researchers analyzed data from 316,388 patients with AF from the National Cardiovascular Data Registry Practice Innovation and Clinical Excellence outpatient quality improvement registry, and found that at 36 months’ follow-up, 83.5% of patients met the new 130/80 mm Hg definition of hypertension, while only 53.3% met the previous 140/90 mm Hg definition.

The diagnosis of hypertension gives 1 point in the CHA2DS2-VASc score, which is used to determine risk in AF patients, those with scores of 2 or more being eligible for oral anticoagulation.

The researchers report that in patients with an index CHA2DS2-VASc score of 1 (before the hypertension diagnosis), at 36 months, 83% fulfilled the 130/80 mm Hg definition of hypertension while the 140/90 mm Hg definition was met by only 50%, giving a large increase in the number of patients who could qualify for oral anticoagulation therapy.

“While the definition of hypertension has changed in response to landmark clinical trials, CHA2DS2-VASc was validated using an older hypertension definition, with limited ambulatory blood pressure monitoring and higher blood pressure goals for treatment,” the authors state.

“Now, patients with AF will meet the CHA2DS2-VASc threshold for oral anticoagulation earlier in their disease course. However, it is not known if patients with scores of 1 or 2 using the new hypertension definition have sufficient stroke risk to offset the bleeding risk of oral anticoagulation and will receive net clinical benefit,” they point out.

This study was published online as a research letter in JAMA Network Open.

Senior author of the report, Mintu Turakhia, MD, Stanford (Calif.) University/iRhythm Technologies Inc., said AF is a good example of how “diagnosis creep” may lead to patients receiving inappropriate treatment.

“Risk scores derived when risk variables were described in one way are starting to be applied based on a diagnosis made in a totally different way,” he said in an interview. “Diagnosis creep is a problem everywhere in medicine. The goal of this study was to quantify what this means for the new definition of hypertension in the context of risk scoring AF patients for anticoagulation treatment. We are calling attention to this issue so clinicians are aware of possible implications.”

Dr. Turakhia explained that the CHA2DS2-VASc score was formulated based on claims data so there was a record of hypertension on the clinical encounter. That hypertension diagnosis would have been based on the old definition of 140/90 mm Hg.

“But now we apply a label of hypertension in the office every time someone has a measurement of elevated blood pressure – treated or untreated – and the blood pressure threshold for a hypertension diagnosis has changed to 130/80 mm Hg,” he said. “We are asking what this means for risk stratification scores such as CHA2DS2-VASc, and how do we quantify what that means for anticoagulation eligibility?”

He said that while identifying hypertension at lower blood pressures may be beneficial with regard to starting antihypertensive treatment earlier with a consequent reduction in cardiovascular outcomes, when this also affects risk scores that determine treatment for other conditions, as is the case for AF, the case is not so clear.

Dr. Turakhia pointed out that with AF, there are additional factors causing diagnosis creep, including earlier detection of AF and identification of shorter episodes due to the use of higher sensitivity tools to detect abnormal rhythms.

“What about the patient who has been identified as having AF based on just a few seconds found on monitoring and who is aged 65 (so just over the age threshold for 1 point on the CHA2DS2-VASc score)?” he asked. “Now we’re going to throw in hypertension with a blood pressure measurement just over 130/80 mm Hg, and they will be eligible for anticoagulation.”

Dr. Turakhia noted that in addition to earlier classification of hypertension, other conditions contributing to the CHA2DS2-VASc score are also being detected earlier, including diabetes and reduced ejection fractions that are considered heart failure.

“I worry about the sum of the parts. We don’t know if the risk score performs equally well when we’re using these different thresholds. We have to be careful that we are not exposing patients to the bleeding risks of anticoagulation unnecessarily. There is a clear issue here,” he said.
 

 

 

What should clinicians do?

In a comment, Gregory Lip, MD, chair of cardiovascular medicine at the University of Liverpool, England, who helped develop the CHA2DS2-VASc score, said clinicians needed to think more broadly when considering hypertension as a risk factor for the score.

He points out that if a patient had a history of hypertension but is now controlled to below 130/80 mm Hg, they would still be considered to be at risk per the CHA2DS2-VASc score.

And for patients without a history of hypertension, and who have a current blood pressure measurement of around 130/80 mm Hg, Dr. Lip advises that it would be premature to diagnose hypertension immediately.

“Hypertension is not a yes/no diagnosis. If you look at the relationship between blood pressure and risk of stroke, it is like a continual dose-response. It doesn’t mean that at 129/79 there is no stroke risk but that at 130/80 there is a stroke risk. It’s not like that,” he said.

“I wouldn’t make a diagnosis on a one-off blood pressure measurement. I would want to monitor that patient and get them to do home measurements,” he commented. “If someone constantly has levels around that 130/80 mm Hg, I don’t necessarily rush in with a definite diagnosis of hypertension and start drug treatment. I would look at lifestyle first. And in such patients, I wouldn’t give them the 1 point for hypertension on the CHA2DS2-VASc score.”

Dr. Lip points out that a hypertension diagnosis is not just about blood pressure numbers. “We have to assess the patients much more completely before giving them a diagnosis and consider factors such as whether there is evidence of hypertension-related end-organ damage, and if lifestyle issues have been addressed.”
 

Are new risk scores needed?

Dr. Turakhia agreed that clinicians need to look at the bigger picture, but he also suggested that new risk scores may need to be developed.

“All of us in the medical community need to think about whether we should be recalibrating risk prediction with more contemporary evidence – based on our ability to detect disease now,” he commented.

“This could even be a different risk score altogether, possibly incorporating a wider range of parameters or perhaps incorporating machine learning. That’s really the question we need to be asking ourselves,” Dr. Turakhia added.

Dr. Lip noted that there are many stroke risk factors and only those that are most common and have been well validated go into clinical risk scores such as CHA2DS2-VASc.

“These risks scores are by design simplifications, and only have modest predictive value for identifying patients at high risk of stroke. You can always improve on clinical risk scores by adding in other variables,” he said. “There are some risk scores in AF with 26 variables. But the practical application of these more complex scores can be difficult in clinical practice. These risks scores are meant to be simple so that they can be used by busy clinicians in the outpatient clinic or on a ward round. It is not easy to input 26 different variables.”

He also noted that many guidelines are now veering away from categorizing patients at high, medium, or low risk of stroke, which he refers to as “artificial” classifications. “There is now more of a default position that patients should receive stroke prevention normally with a DOAC [direct oral anticoagulant] unless they are low risk.”

Dr. Turakhia agreed that it is imperative to look at the bigger picture when identifying AF patients for anticoagulation. “We have to be careful not to take things at face value. It is more important than ever to use clinical judgment to avoid overtreatment in borderline situations,” he concluded.

This study was supported by the American College of Cardiology Foundation’s National Cardiovascular Data Registry. Dr. Turakhia reported employment from iRhythm Technologies; equity from AliveCor, Connect America, Evidently, and Forward; grants from U.S. Food and Drug Administration, American Heart Association, Bayer, Sanofi, Gilead, and Bristol Myers Squibb; and personal fees from Pfizer and JAMA Cardiology (prior associate editor) outside the submitted work. Dr. Lip has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The issue of earlier classification of medical conditions – known as “diagnosis creep” – is leading to many patients becoming eligible for treatments at earlier stages in their disease course, without those treatments having been validated in those particular groups.

This concern has been highlighted recently in the atrial fibrillation (AF) field, with the recent change in the definition of hypertension in the United States at lower levels of blood pressure causing a lot more patients to become eligible for oral anticoagulation at an earlier stage in their AF course.

U.S. researchers analyzed data from 316,388 patients with AF from the National Cardiovascular Data Registry Practice Innovation and Clinical Excellence outpatient quality improvement registry, and found that at 36 months’ follow-up, 83.5% of patients met the new 130/80 mm Hg definition of hypertension, while only 53.3% met the previous 140/90 mm Hg definition.

The diagnosis of hypertension gives 1 point in the CHA2DS2-VASc score, which is used to determine risk in AF patients, those with scores of 2 or more being eligible for oral anticoagulation.

The researchers report that in patients with an index CHA2DS2-VASc score of 1 (before the hypertension diagnosis), at 36 months, 83% fulfilled the 130/80 mm Hg definition of hypertension while the 140/90 mm Hg definition was met by only 50%, giving a large increase in the number of patients who could qualify for oral anticoagulation therapy.

“While the definition of hypertension has changed in response to landmark clinical trials, CHA2DS2-VASc was validated using an older hypertension definition, with limited ambulatory blood pressure monitoring and higher blood pressure goals for treatment,” the authors state.

“Now, patients with AF will meet the CHA2DS2-VASc threshold for oral anticoagulation earlier in their disease course. However, it is not known if patients with scores of 1 or 2 using the new hypertension definition have sufficient stroke risk to offset the bleeding risk of oral anticoagulation and will receive net clinical benefit,” they point out.

This study was published online as a research letter in JAMA Network Open.

Senior author of the report, Mintu Turakhia, MD, Stanford (Calif.) University/iRhythm Technologies Inc., said AF is a good example of how “diagnosis creep” may lead to patients receiving inappropriate treatment.

“Risk scores derived when risk variables were described in one way are starting to be applied based on a diagnosis made in a totally different way,” he said in an interview. “Diagnosis creep is a problem everywhere in medicine. The goal of this study was to quantify what this means for the new definition of hypertension in the context of risk scoring AF patients for anticoagulation treatment. We are calling attention to this issue so clinicians are aware of possible implications.”

Dr. Turakhia explained that the CHA2DS2-VASc score was formulated based on claims data so there was a record of hypertension on the clinical encounter. That hypertension diagnosis would have been based on the old definition of 140/90 mm Hg.

“But now we apply a label of hypertension in the office every time someone has a measurement of elevated blood pressure – treated or untreated – and the blood pressure threshold for a hypertension diagnosis has changed to 130/80 mm Hg,” he said. “We are asking what this means for risk stratification scores such as CHA2DS2-VASc, and how do we quantify what that means for anticoagulation eligibility?”

He said that while identifying hypertension at lower blood pressures may be beneficial with regard to starting antihypertensive treatment earlier with a consequent reduction in cardiovascular outcomes, when this also affects risk scores that determine treatment for other conditions, as is the case for AF, the case is not so clear.

Dr. Turakhia pointed out that with AF, there are additional factors causing diagnosis creep, including earlier detection of AF and identification of shorter episodes due to the use of higher sensitivity tools to detect abnormal rhythms.

“What about the patient who has been identified as having AF based on just a few seconds found on monitoring and who is aged 65 (so just over the age threshold for 1 point on the CHA2DS2-VASc score)?” he asked. “Now we’re going to throw in hypertension with a blood pressure measurement just over 130/80 mm Hg, and they will be eligible for anticoagulation.”

Dr. Turakhia noted that in addition to earlier classification of hypertension, other conditions contributing to the CHA2DS2-VASc score are also being detected earlier, including diabetes and reduced ejection fractions that are considered heart failure.

“I worry about the sum of the parts. We don’t know if the risk score performs equally well when we’re using these different thresholds. We have to be careful that we are not exposing patients to the bleeding risks of anticoagulation unnecessarily. There is a clear issue here,” he said.
 

 

 

What should clinicians do?

In a comment, Gregory Lip, MD, chair of cardiovascular medicine at the University of Liverpool, England, who helped develop the CHA2DS2-VASc score, said clinicians needed to think more broadly when considering hypertension as a risk factor for the score.

He points out that if a patient had a history of hypertension but is now controlled to below 130/80 mm Hg, they would still be considered to be at risk per the CHA2DS2-VASc score.

And for patients without a history of hypertension, and who have a current blood pressure measurement of around 130/80 mm Hg, Dr. Lip advises that it would be premature to diagnose hypertension immediately.

“Hypertension is not a yes/no diagnosis. If you look at the relationship between blood pressure and risk of stroke, it is like a continual dose-response. It doesn’t mean that at 129/79 there is no stroke risk but that at 130/80 there is a stroke risk. It’s not like that,” he said.

“I wouldn’t make a diagnosis on a one-off blood pressure measurement. I would want to monitor that patient and get them to do home measurements,” he commented. “If someone constantly has levels around that 130/80 mm Hg, I don’t necessarily rush in with a definite diagnosis of hypertension and start drug treatment. I would look at lifestyle first. And in such patients, I wouldn’t give them the 1 point for hypertension on the CHA2DS2-VASc score.”

Dr. Lip points out that a hypertension diagnosis is not just about blood pressure numbers. “We have to assess the patients much more completely before giving them a diagnosis and consider factors such as whether there is evidence of hypertension-related end-organ damage, and if lifestyle issues have been addressed.”
 

Are new risk scores needed?

Dr. Turakhia agreed that clinicians need to look at the bigger picture, but he also suggested that new risk scores may need to be developed.

“All of us in the medical community need to think about whether we should be recalibrating risk prediction with more contemporary evidence – based on our ability to detect disease now,” he commented.

“This could even be a different risk score altogether, possibly incorporating a wider range of parameters or perhaps incorporating machine learning. That’s really the question we need to be asking ourselves,” Dr. Turakhia added.

Dr. Lip noted that there are many stroke risk factors and only those that are most common and have been well validated go into clinical risk scores such as CHA2DS2-VASc.

“These risks scores are by design simplifications, and only have modest predictive value for identifying patients at high risk of stroke. You can always improve on clinical risk scores by adding in other variables,” he said. “There are some risk scores in AF with 26 variables. But the practical application of these more complex scores can be difficult in clinical practice. These risks scores are meant to be simple so that they can be used by busy clinicians in the outpatient clinic or on a ward round. It is not easy to input 26 different variables.”

He also noted that many guidelines are now veering away from categorizing patients at high, medium, or low risk of stroke, which he refers to as “artificial” classifications. “There is now more of a default position that patients should receive stroke prevention normally with a DOAC [direct oral anticoagulant] unless they are low risk.”

Dr. Turakhia agreed that it is imperative to look at the bigger picture when identifying AF patients for anticoagulation. “We have to be careful not to take things at face value. It is more important than ever to use clinical judgment to avoid overtreatment in borderline situations,” he concluded.

This study was supported by the American College of Cardiology Foundation’s National Cardiovascular Data Registry. Dr. Turakhia reported employment from iRhythm Technologies; equity from AliveCor, Connect America, Evidently, and Forward; grants from U.S. Food and Drug Administration, American Heart Association, Bayer, Sanofi, Gilead, and Bristol Myers Squibb; and personal fees from Pfizer and JAMA Cardiology (prior associate editor) outside the submitted work. Dr. Lip has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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Greater fracture risk reduction seen with denosumab vs. zoledronic acid in postmenopausal women

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Thu, 10/19/2023 - 23:33

VANCOUVER – A highly controlled retrospective analysis suggests that denosumab (Prolia) leads to greater reduction in fracture risk than does zoledronic acid (Reclast) among treatment-naive postmenopausal women with osteoporosis.

A previous head-to-head comparison showed that denosumab increased bone mineral density at key skeletal sites compared with zoledronic acid, but only a single, small observational study has examined fracture risk, and it found no difference.

The new study, presented at the annual meeting of the American Society for Bone and Mineral Research, used a relatively new method of real-world comparative effectiveness analysis called negative control outcome (NCO) to analyze Medicare fee-for-service data.

NCO analysis takes extra pains to remove bias through data that might be linked to potential confounders but could not reasonably be attributed to a drug. For example, people who have greater contact with the health care system may be more likely to get one drug or another. The researchers used the frequency of receiving a flu or pneumonia vaccine as a proxy for this. If the two comparison groups had a significant difference in a proxy, it suggested a hidden bias and forced the researchers to abandon those groupings. Another example used car accidents as a proxy for cognitive impairment.

“If you find meaningful differences between the two groups, and you can say there’s no way a bone drug could account for these differences, then we shouldn’t do this analysis because these groups just aren’t comparable. They probably differ by that confounding factor we couldn’t measure,” said Jeffrey Curtis, MD, who presented the study. He is a professor of medicine in the division of clinical immunology and rheumatology at the University of Alabama at Birmingham.

The study strongly suggests superiority for denosumab. “There was a significant difference in multiple different groupings of fractures – beginning at year 2, extending to year 3 and even out to year 5 – that showed that there is a significant reduction in fracture risk if you get treated with denosumab [that was greater] than if you get treated with zoledronic acid,” Dr. Curtis said.

The researchers weighed 118 covariates and ultimately identified a population of 90,805 women taking denosumab and 37,328 taking zoledronic acid that was equally balanced in all patient characteristics. The mean age was about 75 years in the denosumab group and 74 in the zoledronic acid group.

The researchers found a 34% lower risk for hip fracture in the denosumab group by 5 years (relative risk, 0.66; 95% confidence interval, 0.43-0.90).

Similar patterns in fracture risk reduction were observed at 5 years for nonvertebral fracture (RR, 0.67; 95% CI, 0.52-0.82), nonhip nonvertebral fracture (RR, 0.69; 95% CI, 0.50-0.88), and major osteoporotic fracture (RR, 0.74; 95% CI, 0.59-0.89).

During the Q&A session after the talk, one audience member commented that the study was limited because the researchers only followed patients who received zoledronic acid for 60 days, which could have missed potential long-term benefits of the drug, especially since bisphosphonates have a lengthy skeletal retention time. Dr. Curtis acknowledged the point but said, “Usually, that’s not something we do, but these are different enough mechanisms of action that it may be warranted at least as a sensitivity analysis,” he said.

The study and its methodology were impressive, according to Yumie Rhee, MD, who comoderated the session where the study was presented. “I think they did a really good job by doing the negative control analysis. We’re not going to have a head-to-head clinical trial, so we don’t know the real fracture reduction differences [between denosumab and zoledronic acid]. [The NCO analysis] is more than the propensity matching score that we do usually,” said Dr. Rhee, who is a professor of endocrinology at Yonsei University College of Medicine in Seoul, South Korea.

In particular, the study showed a significantly greater reduction in hip fractures with denosumab. “Even in the RCTs, it was really hard to see the reduction in hip fracture, so I think this is showing much stronger data for denosumab. Especially in patients who have more [general fracture] risk and patients with higher hip fracture risk, I would go with denosumab,” Dr. Rhee said.

Her comoderator, Maria Zanchetta, MD, agreed. “It can have clinical implication, because we think denosumab is better than [zoledronic acid] for higher-risk patients, but we didn’t have the evidence. So at least we have a new [study] to look at, and I think it’s very important for our practice,” said Dr. Zanchetta, who is a professor of osteology at the Institute of Diagnostics and Metabolic Research, Universidad del Salvador, Buenos Aires.

The study was funded by Amgen, which markets denosumab. Dr. Curtis has consulted for Amgen. Dr. Rhee and Dr. Zanchetta report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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VANCOUVER – A highly controlled retrospective analysis suggests that denosumab (Prolia) leads to greater reduction in fracture risk than does zoledronic acid (Reclast) among treatment-naive postmenopausal women with osteoporosis.

A previous head-to-head comparison showed that denosumab increased bone mineral density at key skeletal sites compared with zoledronic acid, but only a single, small observational study has examined fracture risk, and it found no difference.

The new study, presented at the annual meeting of the American Society for Bone and Mineral Research, used a relatively new method of real-world comparative effectiveness analysis called negative control outcome (NCO) to analyze Medicare fee-for-service data.

NCO analysis takes extra pains to remove bias through data that might be linked to potential confounders but could not reasonably be attributed to a drug. For example, people who have greater contact with the health care system may be more likely to get one drug or another. The researchers used the frequency of receiving a flu or pneumonia vaccine as a proxy for this. If the two comparison groups had a significant difference in a proxy, it suggested a hidden bias and forced the researchers to abandon those groupings. Another example used car accidents as a proxy for cognitive impairment.

“If you find meaningful differences between the two groups, and you can say there’s no way a bone drug could account for these differences, then we shouldn’t do this analysis because these groups just aren’t comparable. They probably differ by that confounding factor we couldn’t measure,” said Jeffrey Curtis, MD, who presented the study. He is a professor of medicine in the division of clinical immunology and rheumatology at the University of Alabama at Birmingham.

The study strongly suggests superiority for denosumab. “There was a significant difference in multiple different groupings of fractures – beginning at year 2, extending to year 3 and even out to year 5 – that showed that there is a significant reduction in fracture risk if you get treated with denosumab [that was greater] than if you get treated with zoledronic acid,” Dr. Curtis said.

The researchers weighed 118 covariates and ultimately identified a population of 90,805 women taking denosumab and 37,328 taking zoledronic acid that was equally balanced in all patient characteristics. The mean age was about 75 years in the denosumab group and 74 in the zoledronic acid group.

The researchers found a 34% lower risk for hip fracture in the denosumab group by 5 years (relative risk, 0.66; 95% confidence interval, 0.43-0.90).

Similar patterns in fracture risk reduction were observed at 5 years for nonvertebral fracture (RR, 0.67; 95% CI, 0.52-0.82), nonhip nonvertebral fracture (RR, 0.69; 95% CI, 0.50-0.88), and major osteoporotic fracture (RR, 0.74; 95% CI, 0.59-0.89).

During the Q&A session after the talk, one audience member commented that the study was limited because the researchers only followed patients who received zoledronic acid for 60 days, which could have missed potential long-term benefits of the drug, especially since bisphosphonates have a lengthy skeletal retention time. Dr. Curtis acknowledged the point but said, “Usually, that’s not something we do, but these are different enough mechanisms of action that it may be warranted at least as a sensitivity analysis,” he said.

The study and its methodology were impressive, according to Yumie Rhee, MD, who comoderated the session where the study was presented. “I think they did a really good job by doing the negative control analysis. We’re not going to have a head-to-head clinical trial, so we don’t know the real fracture reduction differences [between denosumab and zoledronic acid]. [The NCO analysis] is more than the propensity matching score that we do usually,” said Dr. Rhee, who is a professor of endocrinology at Yonsei University College of Medicine in Seoul, South Korea.

In particular, the study showed a significantly greater reduction in hip fractures with denosumab. “Even in the RCTs, it was really hard to see the reduction in hip fracture, so I think this is showing much stronger data for denosumab. Especially in patients who have more [general fracture] risk and patients with higher hip fracture risk, I would go with denosumab,” Dr. Rhee said.

Her comoderator, Maria Zanchetta, MD, agreed. “It can have clinical implication, because we think denosumab is better than [zoledronic acid] for higher-risk patients, but we didn’t have the evidence. So at least we have a new [study] to look at, and I think it’s very important for our practice,” said Dr. Zanchetta, who is a professor of osteology at the Institute of Diagnostics and Metabolic Research, Universidad del Salvador, Buenos Aires.

The study was funded by Amgen, which markets denosumab. Dr. Curtis has consulted for Amgen. Dr. Rhee and Dr. Zanchetta report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

VANCOUVER – A highly controlled retrospective analysis suggests that denosumab (Prolia) leads to greater reduction in fracture risk than does zoledronic acid (Reclast) among treatment-naive postmenopausal women with osteoporosis.

A previous head-to-head comparison showed that denosumab increased bone mineral density at key skeletal sites compared with zoledronic acid, but only a single, small observational study has examined fracture risk, and it found no difference.

The new study, presented at the annual meeting of the American Society for Bone and Mineral Research, used a relatively new method of real-world comparative effectiveness analysis called negative control outcome (NCO) to analyze Medicare fee-for-service data.

NCO analysis takes extra pains to remove bias through data that might be linked to potential confounders but could not reasonably be attributed to a drug. For example, people who have greater contact with the health care system may be more likely to get one drug or another. The researchers used the frequency of receiving a flu or pneumonia vaccine as a proxy for this. If the two comparison groups had a significant difference in a proxy, it suggested a hidden bias and forced the researchers to abandon those groupings. Another example used car accidents as a proxy for cognitive impairment.

“If you find meaningful differences between the two groups, and you can say there’s no way a bone drug could account for these differences, then we shouldn’t do this analysis because these groups just aren’t comparable. They probably differ by that confounding factor we couldn’t measure,” said Jeffrey Curtis, MD, who presented the study. He is a professor of medicine in the division of clinical immunology and rheumatology at the University of Alabama at Birmingham.

The study strongly suggests superiority for denosumab. “There was a significant difference in multiple different groupings of fractures – beginning at year 2, extending to year 3 and even out to year 5 – that showed that there is a significant reduction in fracture risk if you get treated with denosumab [that was greater] than if you get treated with zoledronic acid,” Dr. Curtis said.

The researchers weighed 118 covariates and ultimately identified a population of 90,805 women taking denosumab and 37,328 taking zoledronic acid that was equally balanced in all patient characteristics. The mean age was about 75 years in the denosumab group and 74 in the zoledronic acid group.

The researchers found a 34% lower risk for hip fracture in the denosumab group by 5 years (relative risk, 0.66; 95% confidence interval, 0.43-0.90).

Similar patterns in fracture risk reduction were observed at 5 years for nonvertebral fracture (RR, 0.67; 95% CI, 0.52-0.82), nonhip nonvertebral fracture (RR, 0.69; 95% CI, 0.50-0.88), and major osteoporotic fracture (RR, 0.74; 95% CI, 0.59-0.89).

During the Q&A session after the talk, one audience member commented that the study was limited because the researchers only followed patients who received zoledronic acid for 60 days, which could have missed potential long-term benefits of the drug, especially since bisphosphonates have a lengthy skeletal retention time. Dr. Curtis acknowledged the point but said, “Usually, that’s not something we do, but these are different enough mechanisms of action that it may be warranted at least as a sensitivity analysis,” he said.

The study and its methodology were impressive, according to Yumie Rhee, MD, who comoderated the session where the study was presented. “I think they did a really good job by doing the negative control analysis. We’re not going to have a head-to-head clinical trial, so we don’t know the real fracture reduction differences [between denosumab and zoledronic acid]. [The NCO analysis] is more than the propensity matching score that we do usually,” said Dr. Rhee, who is a professor of endocrinology at Yonsei University College of Medicine in Seoul, South Korea.

In particular, the study showed a significantly greater reduction in hip fractures with denosumab. “Even in the RCTs, it was really hard to see the reduction in hip fracture, so I think this is showing much stronger data for denosumab. Especially in patients who have more [general fracture] risk and patients with higher hip fracture risk, I would go with denosumab,” Dr. Rhee said.

Her comoderator, Maria Zanchetta, MD, agreed. “It can have clinical implication, because we think denosumab is better than [zoledronic acid] for higher-risk patients, but we didn’t have the evidence. So at least we have a new [study] to look at, and I think it’s very important for our practice,” said Dr. Zanchetta, who is a professor of osteology at the Institute of Diagnostics and Metabolic Research, Universidad del Salvador, Buenos Aires.

The study was funded by Amgen, which markets denosumab. Dr. Curtis has consulted for Amgen. Dr. Rhee and Dr. Zanchetta report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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CKD linked to cardiac arrest in Hispanic, Latinx patients

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Tue, 10/17/2023 - 15:21

 

TOPLINE:

Chronic kidney disease is the strongest predictor of sudden cardiac arrest (SCA) in a population of Hispanic and Latinx patients, new data show, suggesting early identification of CKD may provide an opportunity to reduce the risk in these groups. Other predictors included heavy drinking, atrial fibrillation, coronary artery disease, heart failure and diabetes.

METHODOLOGY:

  • The study included 295 Hispanic or Latinx patients with out-of-hospital SCA from the PRESTO study in Ventura County, California, and 590 frequency-matched controls from the San Diego site of the population-based HCHS/SOL (Hispanic Community Health Survey/Study of Latinos); in both cohorts, men made up 70% of participants, and the median age was about 63 years.
  • Researchers collected data on demographics, medical history, and current health conditions. Of note, 51.2% of SCA cases and 8.8% of control participants had CKD, and 20.0% of cases and 0.7% of the control group were on dialysis.
  • Pre-SCA echocardiograms were available for 48% of SCA cases and baseline echocardiograms for more than 99% of control participants.

TAKEAWAY:

  • In analyses adjusted for age, sex, and clinical variables, predictors significantly associated with higher odds of SCA included: CKD (odds ratio, 7.3; 95% confidence interval, 3.8-14.3; P < .001), heavy drinking (OR, 4.5), stroke (OR, 3.1), atrial fibrillation (OR, 3.7), coronary artery disease (OR, 2.9), heart failure (OR, 2.5), and diabetes (OR, 1.5).
  • Hypertension, hyperlipemia, body mass index, and current smoking status were not significantly associated with SCA.
  • In adjusted analyses, heart rate (OR, 1.8 per one standard deviation [1-SD] increase), QTc interval (OR, 2.5 per 1-SD increase) and left ventricular ejection fraction (OR, 4.4 per 1-SD decrease) were significantly associated with SCA, suggesting echocardiogram evaluations could help identify Hispanic or Latinx individuals at increased risk for SCA, wrote the authors.

IN PRACTICE:

“Our study, the first to include feasible numbers of Hispanic or Latino individuals, highlights the importance of renal dysfunction as a risk factor for SCA in the community,” the authors wrote, adding that early identification and management of chronic kidney disease could reduce risk for SCA in this population.

SOURCE:

The study was conducted by Kyndaron Reinier, PhD, MPH, Cedars-Sinai Health System, Los Angeles, and colleagues. It was published online in the Journal of the American Heart Association.

LIMITATIONS:

Most participants from the HCHS/SOL study were born outside the United States, compared with about half the SCA cases, which could have influenced cardiovascular disease risk, although results did not change considerably when models were adjusted for place of birth. Study participants were predominantly of Mexican heritage, so results may not be generalizable to Hispanic or Latinx individuals from other regions. As medical history was assessed differently in the two studies, there could be some error in estimating the strength of associations. Results from echocardiographic data should be viewed as hypothesis generating because of the potential for residual bias.

DISCLOSURES:

The Ventura PRESTO study was funded, in part, by the National Institutes of Health, and National Heart, Lung, and Blood Institute. The HCHS/SOL was carried out as a collaborative study supported by contracts from the NHLBI.

A version of this article first appeared on Medscape.com.

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TOPLINE:

Chronic kidney disease is the strongest predictor of sudden cardiac arrest (SCA) in a population of Hispanic and Latinx patients, new data show, suggesting early identification of CKD may provide an opportunity to reduce the risk in these groups. Other predictors included heavy drinking, atrial fibrillation, coronary artery disease, heart failure and diabetes.

METHODOLOGY:

  • The study included 295 Hispanic or Latinx patients with out-of-hospital SCA from the PRESTO study in Ventura County, California, and 590 frequency-matched controls from the San Diego site of the population-based HCHS/SOL (Hispanic Community Health Survey/Study of Latinos); in both cohorts, men made up 70% of participants, and the median age was about 63 years.
  • Researchers collected data on demographics, medical history, and current health conditions. Of note, 51.2% of SCA cases and 8.8% of control participants had CKD, and 20.0% of cases and 0.7% of the control group were on dialysis.
  • Pre-SCA echocardiograms were available for 48% of SCA cases and baseline echocardiograms for more than 99% of control participants.

TAKEAWAY:

  • In analyses adjusted for age, sex, and clinical variables, predictors significantly associated with higher odds of SCA included: CKD (odds ratio, 7.3; 95% confidence interval, 3.8-14.3; P < .001), heavy drinking (OR, 4.5), stroke (OR, 3.1), atrial fibrillation (OR, 3.7), coronary artery disease (OR, 2.9), heart failure (OR, 2.5), and diabetes (OR, 1.5).
  • Hypertension, hyperlipemia, body mass index, and current smoking status were not significantly associated with SCA.
  • In adjusted analyses, heart rate (OR, 1.8 per one standard deviation [1-SD] increase), QTc interval (OR, 2.5 per 1-SD increase) and left ventricular ejection fraction (OR, 4.4 per 1-SD decrease) were significantly associated with SCA, suggesting echocardiogram evaluations could help identify Hispanic or Latinx individuals at increased risk for SCA, wrote the authors.

IN PRACTICE:

“Our study, the first to include feasible numbers of Hispanic or Latino individuals, highlights the importance of renal dysfunction as a risk factor for SCA in the community,” the authors wrote, adding that early identification and management of chronic kidney disease could reduce risk for SCA in this population.

SOURCE:

The study was conducted by Kyndaron Reinier, PhD, MPH, Cedars-Sinai Health System, Los Angeles, and colleagues. It was published online in the Journal of the American Heart Association.

LIMITATIONS:

Most participants from the HCHS/SOL study were born outside the United States, compared with about half the SCA cases, which could have influenced cardiovascular disease risk, although results did not change considerably when models were adjusted for place of birth. Study participants were predominantly of Mexican heritage, so results may not be generalizable to Hispanic or Latinx individuals from other regions. As medical history was assessed differently in the two studies, there could be some error in estimating the strength of associations. Results from echocardiographic data should be viewed as hypothesis generating because of the potential for residual bias.

DISCLOSURES:

The Ventura PRESTO study was funded, in part, by the National Institutes of Health, and National Heart, Lung, and Blood Institute. The HCHS/SOL was carried out as a collaborative study supported by contracts from the NHLBI.

A version of this article first appeared on Medscape.com.

 

TOPLINE:

Chronic kidney disease is the strongest predictor of sudden cardiac arrest (SCA) in a population of Hispanic and Latinx patients, new data show, suggesting early identification of CKD may provide an opportunity to reduce the risk in these groups. Other predictors included heavy drinking, atrial fibrillation, coronary artery disease, heart failure and diabetes.

METHODOLOGY:

  • The study included 295 Hispanic or Latinx patients with out-of-hospital SCA from the PRESTO study in Ventura County, California, and 590 frequency-matched controls from the San Diego site of the population-based HCHS/SOL (Hispanic Community Health Survey/Study of Latinos); in both cohorts, men made up 70% of participants, and the median age was about 63 years.
  • Researchers collected data on demographics, medical history, and current health conditions. Of note, 51.2% of SCA cases and 8.8% of control participants had CKD, and 20.0% of cases and 0.7% of the control group were on dialysis.
  • Pre-SCA echocardiograms were available for 48% of SCA cases and baseline echocardiograms for more than 99% of control participants.

TAKEAWAY:

  • In analyses adjusted for age, sex, and clinical variables, predictors significantly associated with higher odds of SCA included: CKD (odds ratio, 7.3; 95% confidence interval, 3.8-14.3; P < .001), heavy drinking (OR, 4.5), stroke (OR, 3.1), atrial fibrillation (OR, 3.7), coronary artery disease (OR, 2.9), heart failure (OR, 2.5), and diabetes (OR, 1.5).
  • Hypertension, hyperlipemia, body mass index, and current smoking status were not significantly associated with SCA.
  • In adjusted analyses, heart rate (OR, 1.8 per one standard deviation [1-SD] increase), QTc interval (OR, 2.5 per 1-SD increase) and left ventricular ejection fraction (OR, 4.4 per 1-SD decrease) were significantly associated with SCA, suggesting echocardiogram evaluations could help identify Hispanic or Latinx individuals at increased risk for SCA, wrote the authors.

IN PRACTICE:

“Our study, the first to include feasible numbers of Hispanic or Latino individuals, highlights the importance of renal dysfunction as a risk factor for SCA in the community,” the authors wrote, adding that early identification and management of chronic kidney disease could reduce risk for SCA in this population.

SOURCE:

The study was conducted by Kyndaron Reinier, PhD, MPH, Cedars-Sinai Health System, Los Angeles, and colleagues. It was published online in the Journal of the American Heart Association.

LIMITATIONS:

Most participants from the HCHS/SOL study were born outside the United States, compared with about half the SCA cases, which could have influenced cardiovascular disease risk, although results did not change considerably when models were adjusted for place of birth. Study participants were predominantly of Mexican heritage, so results may not be generalizable to Hispanic or Latinx individuals from other regions. As medical history was assessed differently in the two studies, there could be some error in estimating the strength of associations. Results from echocardiographic data should be viewed as hypothesis generating because of the potential for residual bias.

DISCLOSURES:

The Ventura PRESTO study was funded, in part, by the National Institutes of Health, and National Heart, Lung, and Blood Institute. The HCHS/SOL was carried out as a collaborative study supported by contracts from the NHLBI.

A version of this article first appeared on Medscape.com.

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