Biologic-naive patients with psoriasis or psoriatic arthritis had a lower risk of serious infection with interleukin-12/23 (IL-12/23) inhibitors than they did with tumor necrosis factor (TNF) inhibitors, but this difference disappeared in patients with previous exposure to biologics, according to data from a retrospective study of nearly 10,000 adults.

Biologics, though effective, can increase the risk for serious infection in psoriatic arthritis and psoriasis patients, and comparison data on the safety of various biologics are limited, wrote Xintong Li of Johns Hopkins University, Baltimore, and colleagues.

In a study published in Annals of the Rheumatic Diseases, the researchers identified 11,560 treatment episodes for 9,305 adults during January 1, 2015, through May 1, 2018, which included 6,043 episodes of psoriasis only, 1,869 episodes of psoriatic arthritis only, and 3,648 episodes of both conditions. The average age of the patients was 46 years, and 53% were men. The investigators studied the IL-12/23 inhibitor ustekinumab (Stelara), the IL-17A inhibitors secukinumab (Cosentyx) and ixekizumab (Taltz), and TNF inhibitors adalimumab (Humira), certolizumab pegol (Cimzia), etanercept (Enbrel), golimumab (Simponi), and infliximab (Remicade). They did not study the interleukin-17 (IL-17) inhibitor brodalumab (Siliq) or IL-23 inhibitors guselkumab (Tremfya), risankizumab (Skyrizi), or tildrakizumab (Ilumya) since they were FDA approved after or toward the end of the study period.

The primary outcome of serious infection, defined as hospitalization with infection as part of the diagnostic codes, occurred in 190 cases (2% of all treatment episodes); the most common serious infections were sepsis and pneumonia.

Overall, new biologics users had similar infection risks with IL-17 and TNF inhibitors, with incidence rates per 100 person-years of 3.4 and 2.2, respectively. By contrast, the incidence rate per 100 person-years was 0.9 with IL-12/23 inhibitors. Incidence rates were similar across all three biologic types for experienced biologics users.

The researchers also grouped patients by condition, including both treatment-naive and -experienced patients. Of the 156 serious infections in psoriasis patients, 26 occurred with IL-17 inhibitors, 29 with IL-12/23 inhibitors, and 101 with TNF inhibitors. Of 105 serious infections in the psoriatic arthritis group, 14 occurred with IL-17, 13 with IL-12/23, and 78 with TNF.

After adjusting for propensity scores, researchers found no evidence of increased serious infection risk for treatment with IL-17 inhibitors, compared with IL-12/23 (hazard ratio, 1.12; 95% confidence interval, 0.62-2.03) or TNF inhibitors (HR, 0.89; 95% CI, 0.48-1.66).

The study findings were limited by several factors, including the use of ICD diagnostic codes that were not fully validated in the patient population, a short follow-up period, and inclusion of only insured patients in the United States, the researchers noted.

However, the results suggest that serious infection risk may vary between patients with psoriasis and psoriatic arthritis, and between biologic-naive and -experienced patients, and that, despite the relatively small difference in absolute effect, “this potentially clinically relevant signal for reduced infections among the IL-12/23 inhibitors warrants further investigation and surveillance efforts,” they concluded. In addition, they said, the findings might guide clinicians and patients in choosing appropriate biologics for a particular condition.

The study was supported by the Center for Drug Safety and Effectiveness at the Johns Hopkins Bloomberg School of Public Health. The researchers had no financial conflicts to disclose. Ms. Li conducted the research while she was at Johns Hopkins, but is now with the University of North Carolina, Chapel Hill.
 

SOURCE: Li X et al. Ann Rheum Dis. 2019 Oct 31. doi: 10.1136/annrheumdis-2019-216102.

Biologic-naive patients with psoriasis or psoriatic arthritis had a lower risk of serious infection with interleukin-12/23 (IL-12/23) inhibitors than they did with tumor necrosis factor (TNF) inhibitors, but this difference disappeared in patients with previous exposure to biologics, according to data from a retrospective study of nearly 10,000 adults.

Biologics, though effective, can increase the risk for serious infection in psoriatic arthritis and psoriasis patients, and comparison data on the safety of various biologics are limited, wrote Xintong Li of Johns Hopkins University, Baltimore, and colleagues.

In a study published in Annals of the Rheumatic Diseases, the researchers identified 11,560 treatment episodes for 9,305 adults during January 1, 2015, through May 1, 2018, which included 6,043 episodes of psoriasis only, 1,869 episodes of psoriatic arthritis only, and 3,648 episodes of both conditions. The average age of the patients was 46 years, and 53% were men. The investigators studied the IL-12/23 inhibitor ustekinumab (Stelara), the IL-17A inhibitors secukinumab (Cosentyx) and ixekizumab (Taltz), and TNF inhibitors adalimumab (Humira), certolizumab pegol (Cimzia), etanercept (Enbrel), golimumab (Simponi), and infliximab (Remicade). They did not study the interleukin-17 (IL-17) inhibitor brodalumab (Siliq) or IL-23 inhibitors guselkumab (Tremfya), risankizumab (Skyrizi), or tildrakizumab (Ilumya) since they were FDA approved after or toward the end of the study period.

The primary outcome of serious infection, defined as hospitalization with infection as part of the diagnostic codes, occurred in 190 cases (2% of all treatment episodes); the most common serious infections were sepsis and pneumonia.

Overall, new biologics users had similar infection risks with IL-17 and TNF inhibitors, with incidence rates per 100 person-years of 3.4 and 2.2, respectively. By contrast, the incidence rate per 100 person-years was 0.9 with IL-12/23 inhibitors. Incidence rates were similar across all three biologic types for experienced biologics users.

The researchers also grouped patients by condition, including both treatment-naive and -experienced patients. Of the 156 serious infections in psoriasis patients, 26 occurred with IL-17 inhibitors, 29 with IL-12/23 inhibitors, and 101 with TNF inhibitors. Of 105 serious infections in the psoriatic arthritis group, 14 occurred with IL-17, 13 with IL-12/23, and 78 with TNF.

After adjusting for propensity scores, researchers found no evidence of increased serious infection risk for treatment with IL-17 inhibitors, compared with IL-12/23 (hazard ratio, 1.12; 95% confidence interval, 0.62-2.03) or TNF inhibitors (HR, 0.89; 95% CI, 0.48-1.66).

The study findings were limited by several factors, including the use of ICD diagnostic codes that were not fully validated in the patient population, a short follow-up period, and inclusion of only insured patients in the United States, the researchers noted.

However, the results suggest that serious infection risk may vary between patients with psoriasis and psoriatic arthritis, and between biologic-naive and -experienced patients, and that, despite the relatively small difference in absolute effect, “this potentially clinically relevant signal for reduced infections among the IL-12/23 inhibitors warrants further investigation and surveillance efforts,” they concluded. In addition, they said, the findings might guide clinicians and patients in choosing appropriate biologics for a particular condition.

The study was supported by the Center for Drug Safety and Effectiveness at the Johns Hopkins Bloomberg School of Public Health. The researchers had no financial conflicts to disclose. Ms. Li conducted the research while she was at Johns Hopkins, but is now with the University of North Carolina, Chapel Hill.
 

SOURCE: Li X et al. Ann Rheum Dis. 2019 Oct 31. doi: 10.1136/annrheumdis-2019-216102.

Biologic-naive patients with psoriasis or psoriatic arthritis had a lower risk of serious infection with interleukin-12/23 (IL-12/23) inhibitors than they did with tumor necrosis factor (TNF) inhibitors, but this difference disappeared in patients with previous exposure to biologics, according to data from a retrospective study of nearly 10,000 adults.

Biologics, though effective, can increase the risk for serious infection in psoriatic arthritis and psoriasis patients, and comparison data on the safety of various biologics are limited, wrote Xintong Li of Johns Hopkins University, Baltimore, and colleagues.

In a study published in Annals of the Rheumatic Diseases, the researchers identified 11,560 treatment episodes for 9,305 adults during January 1, 2015, through May 1, 2018, which included 6,043 episodes of psoriasis only, 1,869 episodes of psoriatic arthritis only, and 3,648 episodes of both conditions. The average age of the patients was 46 years, and 53% were men. The investigators studied the IL-12/23 inhibitor ustekinumab (Stelara), the IL-17A inhibitors secukinumab (Cosentyx) and ixekizumab (Taltz), and TNF inhibitors adalimumab (Humira), certolizumab pegol (Cimzia), etanercept (Enbrel), golimumab (Simponi), and infliximab (Remicade). They did not study the interleukin-17 (IL-17) inhibitor brodalumab (Siliq) or IL-23 inhibitors guselkumab (Tremfya), risankizumab (Skyrizi), or tildrakizumab (Ilumya) since they were FDA approved after or toward the end of the study period.

The primary outcome of serious infection, defined as hospitalization with infection as part of the diagnostic codes, occurred in 190 cases (2% of all treatment episodes); the most common serious infections were sepsis and pneumonia.

Overall, new biologics users had similar infection risks with IL-17 and TNF inhibitors, with incidence rates per 100 person-years of 3.4 and 2.2, respectively. By contrast, the incidence rate per 100 person-years was 0.9 with IL-12/23 inhibitors. Incidence rates were similar across all three biologic types for experienced biologics users.

The researchers also grouped patients by condition, including both treatment-naive and -experienced patients. Of the 156 serious infections in psoriasis patients, 26 occurred with IL-17 inhibitors, 29 with IL-12/23 inhibitors, and 101 with TNF inhibitors. Of 105 serious infections in the psoriatic arthritis group, 14 occurred with IL-17, 13 with IL-12/23, and 78 with TNF.

After adjusting for propensity scores, researchers found no evidence of increased serious infection risk for treatment with IL-17 inhibitors, compared with IL-12/23 (hazard ratio, 1.12; 95% confidence interval, 0.62-2.03) or TNF inhibitors (HR, 0.89; 95% CI, 0.48-1.66).

The study findings were limited by several factors, including the use of ICD diagnostic codes that were not fully validated in the patient population, a short follow-up period, and inclusion of only insured patients in the United States, the researchers noted.

However, the results suggest that serious infection risk may vary between patients with psoriasis and psoriatic arthritis, and between biologic-naive and -experienced patients, and that, despite the relatively small difference in absolute effect, “this potentially clinically relevant signal for reduced infections among the IL-12/23 inhibitors warrants further investigation and surveillance efforts,” they concluded. In addition, they said, the findings might guide clinicians and patients in choosing appropriate biologics for a particular condition.

The study was supported by the Center for Drug Safety and Effectiveness at the Johns Hopkins Bloomberg School of Public Health. The researchers had no financial conflicts to disclose. Ms. Li conducted the research while she was at Johns Hopkins, but is now with the University of North Carolina, Chapel Hill.
 

SOURCE: Li X et al. Ann Rheum Dis. 2019 Oct 31. doi: 10.1136/annrheumdis-2019-216102.

Reducing childhood exposure to adverse events such as violence, abuse, and parental jail time could reap immense improvements in long-term health and societal outcomes, according to a new report by the Centers for Disease Control and Prevention.

zdravinjo/Thinkstock

“Our analysis suggests that preventing or reducing these adverse childhood experiences [ACEs] could potentially reduce the annual number of coronary heart disease cases by up to 13%,” said Ann Schuchat, MD, the CDC’s principal deputy director. “If we apply this analysis to other national disease estimates, preventing ACEs could prevent 1.9 million cases of heart disease, 2.5 million cases of overweight or obesity, 21 million cases of depression, and 1.5 million high-school incompletions.”

The analysis, conducted by Melissa T. Merrick, PhD, and colleagues at the National Center for Injury Prevention and Control at the CDC, Atlanta, is based on data acquired from more than 144,000 adults in 27 states.

It’s the first time the CDC has waded into this territory, Dr. Schuchat said during a press briefing. But a hard look into the data is long overdue. ACEs have been linked to at least 5 of the top 10 leading causes of death in the United States: heart disease, cancer, respiratory disease, diabetes, and suicide.

“It’s been proven that exposure to abuse, violence, and familial substance abuse and mental health problems can lead to health and social problems during the entire lifespan. Multiple exposures can produce toxic stress and chronic activation of the stress response system,” Dr. Schuchat continued. “Our report found that more than half of adults have experienced at least one type of ACE, and one in six adults has been exposed to four or more. The effects add up – the more types of ACE encountered, the higher the risk for negative outcomes that limit their entire lives.”

Dr. Merrick, a behavioral scientist with the CDC, and her team reviewed data collected from the Behavioral Risk Factor Surveillance System (BRFSS), a telephone survey of noninstitutionalized adults administered every year within each state. During the 2015-2017 data collection years, 27 states included questions about ACEs. The experiences included childhood exposure to three types of abuse (physical, emotional, and sexual) and five types of household challenges (household member substance misuse, incarceration, mental illness, parental divorce, or witnessing intimate partner violence) before age 18 years.

In all, 61% of respondents reported experiencing at least one of the events; 16% reported experiencing four or more. Women, Native Americans, Native Alaskans, and blacks were more likely to have these experiences than were men and whites.

A multivariate regression analysis found that adults with the highest level of ACE exposure had significantly elevated risks of several chronic health issues and social challenges, compared with nonexposed subjects. These included increased risk of overweight or obesity (adjusted odds ratio, 1.2), chronic obstructive pulmonary disease (aOR, 2.8), depression (aOR 5.3), smoking (aOR 3.1), heavy drinking (aOR 1.8), and underemployment (aOR 1.7), compared with adults reporting no ACEs.

Reducing ACE exposures could in turn reduce many of these challenges, especially among people with the highest number of exposures. Among this group, preventing all ACE exposure could cut overweight and obesity by up to 1.7%, chronic obstructive pulmonary disease by up to 27%, depression by up to 44%, smoking by up to 33%, and heavy drinking by 24%. Preventing ACE exposure also could reduce lack of health insurance by 4% and unemployment by 15%, the researchers said.

The good news, Dr. Merrick and associates said, is that ACE exposure can be at least partially offset by positive interactions with adults and in social and community settings.

“Prevention of adverse childhood experiences is possible with state and community efforts to build resilient families and communities, provide parental support to develop positive parenting and coping skills, and increase access to, and use of, comprehensive health services,” they said.

The CDC recommends a comprehensive approach to preventing ACEs and mitigating their impact. The data-driven suggestions include:

• Promoting family economic health, including tax credits and family-focused work policy.
• Endorsing programs to mitigate violence and adversity, including public education programs that support parents.
• Promoting early childhood development with high-quality child care and preschool programs.
• Recommending stress reduction skills for parents and young people, and programs that teach safe dating and healthy relationship skills.
• Supporting youth development by connecting youth to adult mentors and after-school programs.
• Encouraging clinicians to identify and address ACE exposure with screening, referral, and support.

“This is important for reducing the consequences of adverse childhood experiences and for helping to protect the next generation of children from exposure to violence and other adverse experiences, such as witnessing substance misuse in their household,” Dr. Merrick and associates said.

The researchers had no relevant financial disclosures.

[email protected]

SOURCE: Merrick M et al. MMWR. 2019 Nov 5. doi: 10.15585/mmwr.mm6844e1.

Reducing childhood exposure to adverse events such as violence, abuse, and parental jail time could reap immense improvements in long-term health and societal outcomes, according to a new report by the Centers for Disease Control and Prevention.

zdravinjo/Thinkstock

“Our analysis suggests that preventing or reducing these adverse childhood experiences [ACEs] could potentially reduce the annual number of coronary heart disease cases by up to 13%,” said Ann Schuchat, MD, the CDC’s principal deputy director. “If we apply this analysis to other national disease estimates, preventing ACEs could prevent 1.9 million cases of heart disease, 2.5 million cases of overweight or obesity, 21 million cases of depression, and 1.5 million high-school incompletions.”

The analysis, conducted by Melissa T. Merrick, PhD, and colleagues at the National Center for Injury Prevention and Control at the CDC, Atlanta, is based on data acquired from more than 144,000 adults in 27 states.

It’s the first time the CDC has waded into this territory, Dr. Schuchat said during a press briefing. But a hard look into the data is long overdue. ACEs have been linked to at least 5 of the top 10 leading causes of death in the United States: heart disease, cancer, respiratory disease, diabetes, and suicide.

“It’s been proven that exposure to abuse, violence, and familial substance abuse and mental health problems can lead to health and social problems during the entire lifespan. Multiple exposures can produce toxic stress and chronic activation of the stress response system,” Dr. Schuchat continued. “Our report found that more than half of adults have experienced at least one type of ACE, and one in six adults has been exposed to four or more. The effects add up – the more types of ACE encountered, the higher the risk for negative outcomes that limit their entire lives.”

Dr. Merrick, a behavioral scientist with the CDC, and her team reviewed data collected from the Behavioral Risk Factor Surveillance System (BRFSS), a telephone survey of noninstitutionalized adults administered every year within each state. During the 2015-2017 data collection years, 27 states included questions about ACEs. The experiences included childhood exposure to three types of abuse (physical, emotional, and sexual) and five types of household challenges (household member substance misuse, incarceration, mental illness, parental divorce, or witnessing intimate partner violence) before age 18 years.

In all, 61% of respondents reported experiencing at least one of the events; 16% reported experiencing four or more. Women, Native Americans, Native Alaskans, and blacks were more likely to have these experiences than were men and whites.

A multivariate regression analysis found that adults with the highest level of ACE exposure had significantly elevated risks of several chronic health issues and social challenges, compared with nonexposed subjects. These included increased risk of overweight or obesity (adjusted odds ratio, 1.2), chronic obstructive pulmonary disease (aOR, 2.8), depression (aOR 5.3), smoking (aOR 3.1), heavy drinking (aOR 1.8), and underemployment (aOR 1.7), compared with adults reporting no ACEs.

Reducing ACE exposures could in turn reduce many of these challenges, especially among people with the highest number of exposures. Among this group, preventing all ACE exposure could cut overweight and obesity by up to 1.7%, chronic obstructive pulmonary disease by up to 27%, depression by up to 44%, smoking by up to 33%, and heavy drinking by 24%. Preventing ACE exposure also could reduce lack of health insurance by 4% and unemployment by 15%, the researchers said.

The good news, Dr. Merrick and associates said, is that ACE exposure can be at least partially offset by positive interactions with adults and in social and community settings.

“Prevention of adverse childhood experiences is possible with state and community efforts to build resilient families and communities, provide parental support to develop positive parenting and coping skills, and increase access to, and use of, comprehensive health services,” they said.

The CDC recommends a comprehensive approach to preventing ACEs and mitigating their impact. The data-driven suggestions include:

• Promoting family economic health, including tax credits and family-focused work policy.
• Endorsing programs to mitigate violence and adversity, including public education programs that support parents.
• Promoting early childhood development with high-quality child care and preschool programs.
• Recommending stress reduction skills for parents and young people, and programs that teach safe dating and healthy relationship skills.
• Supporting youth development by connecting youth to adult mentors and after-school programs.
• Encouraging clinicians to identify and address ACE exposure with screening, referral, and support.

“This is important for reducing the consequences of adverse childhood experiences and for helping to protect the next generation of children from exposure to violence and other adverse experiences, such as witnessing substance misuse in their household,” Dr. Merrick and associates said.

The researchers had no relevant financial disclosures.

[email protected]

SOURCE: Merrick M et al. MMWR. 2019 Nov 5. doi: 10.15585/mmwr.mm6844e1.

Reducing childhood exposure to adverse events such as violence, abuse, and parental jail time could reap immense improvements in long-term health and societal outcomes, according to a new report by the Centers for Disease Control and Prevention.

zdravinjo/Thinkstock

“Our analysis suggests that preventing or reducing these adverse childhood experiences [ACEs] could potentially reduce the annual number of coronary heart disease cases by up to 13%,” said Ann Schuchat, MD, the CDC’s principal deputy director. “If we apply this analysis to other national disease estimates, preventing ACEs could prevent 1.9 million cases of heart disease, 2.5 million cases of overweight or obesity, 21 million cases of depression, and 1.5 million high-school incompletions.”

The analysis, conducted by Melissa T. Merrick, PhD, and colleagues at the National Center for Injury Prevention and Control at the CDC, Atlanta, is based on data acquired from more than 144,000 adults in 27 states.

It’s the first time the CDC has waded into this territory, Dr. Schuchat said during a press briefing. But a hard look into the data is long overdue. ACEs have been linked to at least 5 of the top 10 leading causes of death in the United States: heart disease, cancer, respiratory disease, diabetes, and suicide.

“It’s been proven that exposure to abuse, violence, and familial substance abuse and mental health problems can lead to health and social problems during the entire lifespan. Multiple exposures can produce toxic stress and chronic activation of the stress response system,” Dr. Schuchat continued. “Our report found that more than half of adults have experienced at least one type of ACE, and one in six adults has been exposed to four or more. The effects add up – the more types of ACE encountered, the higher the risk for negative outcomes that limit their entire lives.”

Dr. Merrick, a behavioral scientist with the CDC, and her team reviewed data collected from the Behavioral Risk Factor Surveillance System (BRFSS), a telephone survey of noninstitutionalized adults administered every year within each state. During the 2015-2017 data collection years, 27 states included questions about ACEs. The experiences included childhood exposure to three types of abuse (physical, emotional, and sexual) and five types of household challenges (household member substance misuse, incarceration, mental illness, parental divorce, or witnessing intimate partner violence) before age 18 years.

In all, 61% of respondents reported experiencing at least one of the events; 16% reported experiencing four or more. Women, Native Americans, Native Alaskans, and blacks were more likely to have these experiences than were men and whites.

A multivariate regression analysis found that adults with the highest level of ACE exposure had significantly elevated risks of several chronic health issues and social challenges, compared with nonexposed subjects. These included increased risk of overweight or obesity (adjusted odds ratio, 1.2), chronic obstructive pulmonary disease (aOR, 2.8), depression (aOR 5.3), smoking (aOR 3.1), heavy drinking (aOR 1.8), and underemployment (aOR 1.7), compared with adults reporting no ACEs.

Reducing ACE exposures could in turn reduce many of these challenges, especially among people with the highest number of exposures. Among this group, preventing all ACE exposure could cut overweight and obesity by up to 1.7%, chronic obstructive pulmonary disease by up to 27%, depression by up to 44%, smoking by up to 33%, and heavy drinking by 24%. Preventing ACE exposure also could reduce lack of health insurance by 4% and unemployment by 15%, the researchers said.

The good news, Dr. Merrick and associates said, is that ACE exposure can be at least partially offset by positive interactions with adults and in social and community settings.

“Prevention of adverse childhood experiences is possible with state and community efforts to build resilient families and communities, provide parental support to develop positive parenting and coping skills, and increase access to, and use of, comprehensive health services,” they said.

The CDC recommends a comprehensive approach to preventing ACEs and mitigating their impact. The data-driven suggestions include:

• Promoting family economic health, including tax credits and family-focused work policy.
• Endorsing programs to mitigate violence and adversity, including public education programs that support parents.
• Promoting early childhood development with high-quality child care and preschool programs.
• Recommending stress reduction skills for parents and young people, and programs that teach safe dating and healthy relationship skills.
• Supporting youth development by connecting youth to adult mentors and after-school programs.
• Encouraging clinicians to identify and address ACE exposure with screening, referral, and support.

“This is important for reducing the consequences of adverse childhood experiences and for helping to protect the next generation of children from exposure to violence and other adverse experiences, such as witnessing substance misuse in their household,” Dr. Merrick and associates said.

The researchers had no relevant financial disclosures.

[email protected]

SOURCE: Merrick M et al. MMWR. 2019 Nov 5. doi: 10.15585/mmwr.mm6844e1.

Regular colorectal cancer (CRC) screenings are indicated for asymptomatic patients aged 50-75 years, according to a new evidence-based guidance statement issued by the American College of Physicians.

Regular screening can be discontinued after age 75 years, Amir Qaseem, MD, president of clinical policy and the Center for Evidence Reviews at the American College of Physicians, and colleagues wrote in the Annals of Internal Medicine.

No one test is preferred over another, according to the guidance statement. Patients and physicians can select the test type together, based on individual needs and preferences, and each test carries its own screening interval. But regular testing has been proven time and again to reduce the risk of colorectal cancer mortality, and more people should have it, according to the guidance.

“Not enough people in the United States get screened for colorectal cancer,” ACP President Robert M. McLean, MD, said in a press statement. “Physicians should perform an individualized risk assessment for colorectal cancer in all adults. Doctors and patients should select the screening test based on a discussion of the benefits, harms, costs, availability, frequency, and patient preferences.”

The guidance is an attempt to balance existing guidelines authored by the U.S. Preventive Services Task Force and the Canadian Task Force on Preventive Health Care (CTFPHC), but it also was developed following critical review of those from the American Cancer Society and other organizations.

The ACP guidance is for adults at average risk for colorectal cancer who do not have symptoms; it does not apply to adults with a family history of colorectal cancer, a long-standing history of inflammatory bowel disease, genetic syndromes such as familial cancerous polyps, a personal history of previous colorectal cancer or benign polyps, or other risk factors.

The guidance was based on evaluations of stool-based tests, including the fecal immunochemical test (FIT), also called the immunochemical-based fecal occult blood test (FOBT), and direct visualization with endoscopic and radiologic tests, including flexible sigmoidoscopy, colonoscopy, and CT colonography. The guidance includes the following recommendations:
 

Clinicians should regularly screen for colorectal cancer in average-risk adults between the ages of 50 and 75 years.

This recommendation is in line with those made by the U.S. Preventive Services Task Force and the CTFPHC. Data suggest that regular screening reduces colorectal cancer–specific mortality in this age group, with those aged 65-75 years likely to garner the most benefit.

The absolute risk reduction increases with age and varies with test type. For every-other-year FOBT, it rises from 0.037% in those younger than 60 years to 0.20% in those aged 60 years or older. For flexible sigmoidoscopy, the risk reduction rises from 0.05% in the younger group to 0.29% in the older group.

Data from the CTFPHC show that the net benefit in those aged 50-59 years is small, however. This may influence the decision about when to start screening.


 

Clinicians should select the colorectal cancer screening test with the patient based on a discussion of benefits, harms, costs, availability, frequency, and patient preferences.

The FIT or FOBT should be performed every 2 years, colonoscopy every 10 years, and flexible sigmoidoscopy every 10 years, plus FIT every 2 years.

No data suggest a benefit of one test over another; however, “all screening tests are associated with potential benefits as well as harms,” the document states. “Clinical decisions need to be individualized using patient clinical characteristics, patient preferences, and screening test frequency and availability. Because many eligible patients have never been screened and some may not adhere to recommendations about subsequent screening or follow-up of positive findings on screening tests (such as colonoscopy after a positive result on a stool-based screening test), patient informed decision making and adherence are important factors in selection of a [colorectal cancer] screening test.”

Discussions with patients should include topics like the recommended frequency of each test, bowel preparation, anesthesia, transportation to and from testing site, time commitments, and the necessary steps if a test result is positive.
 

Clinicians should discontinue screening for colorectal cancer in average-risk adults older than 75 years or in adults with a life expectancy of 10 years or less.

While the benefit from screening increases with age, so do the risks for harm, especially serious harm. Data show the balance of harms and benefits reaching a tipping point at around 75 years of age. But again, this isn’t a universal recommendation, the statement says.

“Persons with no history of [colorectal cancer] screening may benefit from screening after age 75 years, whereas those who have received regular screening with negative results may not.”

Cessation of testing considers life expectancy after age 75 years. The average life expectancy for healthy 75-year-old men and women in the United States is 9.9 and 12 years, respectively. But among men and women with serious medical comorbidities, average life expectancy after age 70 years drops to 8.9 and 10.8 years, respectively.

“Therefore, most persons aged 75 years or older, as well as most adults who are younger than 75 years but have serious comorbid conditions [such as chronic renal failure], are unlikely to benefit from screening but would undergo unnecessary, burdensome, potentially harmful, and costly screening tests.”

As in any testing discussion, personal preferences are important, but not just to make patients feel comfortable about their choice. Mindset about colorectal cancer testing has a very big effect on compliance, the statement noted.

“For example, a biennial stool test is not a good screening strategy for patients who may be unwilling or unlikely to follow up every other year. In addition, given the tradeoffs between benefits and harms, some patients may want less intensive screening, such as screening that begins at a later age, stops at an earlier age, or recurs less frequently regardless of modality selected.”

[email protected]

SOURCE: Qassam A et al. Ann Intern Med. 2019;171:643-54.

Regular colorectal cancer (CRC) screenings are indicated for asymptomatic patients aged 50-75 years, according to a new evidence-based guidance statement issued by the American College of Physicians.

Regular screening can be discontinued after age 75 years, Amir Qaseem, MD, president of clinical policy and the Center for Evidence Reviews at the American College of Physicians, and colleagues wrote in the Annals of Internal Medicine.

No one test is preferred over another, according to the guidance statement. Patients and physicians can select the test type together, based on individual needs and preferences, and each test carries its own screening interval. But regular testing has been proven time and again to reduce the risk of colorectal cancer mortality, and more people should have it, according to the guidance.

“Not enough people in the United States get screened for colorectal cancer,” ACP President Robert M. McLean, MD, said in a press statement. “Physicians should perform an individualized risk assessment for colorectal cancer in all adults. Doctors and patients should select the screening test based on a discussion of the benefits, harms, costs, availability, frequency, and patient preferences.”

The guidance is an attempt to balance existing guidelines authored by the U.S. Preventive Services Task Force and the Canadian Task Force on Preventive Health Care (CTFPHC), but it also was developed following critical review of those from the American Cancer Society and other organizations.

The ACP guidance is for adults at average risk for colorectal cancer who do not have symptoms; it does not apply to adults with a family history of colorectal cancer, a long-standing history of inflammatory bowel disease, genetic syndromes such as familial cancerous polyps, a personal history of previous colorectal cancer or benign polyps, or other risk factors.

The guidance was based on evaluations of stool-based tests, including the fecal immunochemical test (FIT), also called the immunochemical-based fecal occult blood test (FOBT), and direct visualization with endoscopic and radiologic tests, including flexible sigmoidoscopy, colonoscopy, and CT colonography. The guidance includes the following recommendations:
 

Clinicians should regularly screen for colorectal cancer in average-risk adults between the ages of 50 and 75 years.

This recommendation is in line with those made by the U.S. Preventive Services Task Force and the CTFPHC. Data suggest that regular screening reduces colorectal cancer–specific mortality in this age group, with those aged 65-75 years likely to garner the most benefit.

The absolute risk reduction increases with age and varies with test type. For every-other-year FOBT, it rises from 0.037% in those younger than 60 years to 0.20% in those aged 60 years or older. For flexible sigmoidoscopy, the risk reduction rises from 0.05% in the younger group to 0.29% in the older group.

Data from the CTFPHC show that the net benefit in those aged 50-59 years is small, however. This may influence the decision about when to start screening.


 

Clinicians should select the colorectal cancer screening test with the patient based on a discussion of benefits, harms, costs, availability, frequency, and patient preferences.

The FIT or FOBT should be performed every 2 years, colonoscopy every 10 years, and flexible sigmoidoscopy every 10 years, plus FIT every 2 years.

No data suggest a benefit of one test over another; however, “all screening tests are associated with potential benefits as well as harms,” the document states. “Clinical decisions need to be individualized using patient clinical characteristics, patient preferences, and screening test frequency and availability. Because many eligible patients have never been screened and some may not adhere to recommendations about subsequent screening or follow-up of positive findings on screening tests (such as colonoscopy after a positive result on a stool-based screening test), patient informed decision making and adherence are important factors in selection of a [colorectal cancer] screening test.”

Discussions with patients should include topics like the recommended frequency of each test, bowel preparation, anesthesia, transportation to and from testing site, time commitments, and the necessary steps if a test result is positive.
 

Clinicians should discontinue screening for colorectal cancer in average-risk adults older than 75 years or in adults with a life expectancy of 10 years or less.

While the benefit from screening increases with age, so do the risks for harm, especially serious harm. Data show the balance of harms and benefits reaching a tipping point at around 75 years of age. But again, this isn’t a universal recommendation, the statement says.

“Persons with no history of [colorectal cancer] screening may benefit from screening after age 75 years, whereas those who have received regular screening with negative results may not.”

Cessation of testing considers life expectancy after age 75 years. The average life expectancy for healthy 75-year-old men and women in the United States is 9.9 and 12 years, respectively. But among men and women with serious medical comorbidities, average life expectancy after age 70 years drops to 8.9 and 10.8 years, respectively.

“Therefore, most persons aged 75 years or older, as well as most adults who are younger than 75 years but have serious comorbid conditions [such as chronic renal failure], are unlikely to benefit from screening but would undergo unnecessary, burdensome, potentially harmful, and costly screening tests.”

As in any testing discussion, personal preferences are important, but not just to make patients feel comfortable about their choice. Mindset about colorectal cancer testing has a very big effect on compliance, the statement noted.

“For example, a biennial stool test is not a good screening strategy for patients who may be unwilling or unlikely to follow up every other year. In addition, given the tradeoffs between benefits and harms, some patients may want less intensive screening, such as screening that begins at a later age, stops at an earlier age, or recurs less frequently regardless of modality selected.”

[email protected]

SOURCE: Qassam A et al. Ann Intern Med. 2019;171:643-54.

Regular colorectal cancer (CRC) screenings are indicated for asymptomatic patients aged 50-75 years, according to a new evidence-based guidance statement issued by the American College of Physicians.

Regular screening can be discontinued after age 75 years, Amir Qaseem, MD, president of clinical policy and the Center for Evidence Reviews at the American College of Physicians, and colleagues wrote in the Annals of Internal Medicine.

No one test is preferred over another, according to the guidance statement. Patients and physicians can select the test type together, based on individual needs and preferences, and each test carries its own screening interval. But regular testing has been proven time and again to reduce the risk of colorectal cancer mortality, and more people should have it, according to the guidance.

“Not enough people in the United States get screened for colorectal cancer,” ACP President Robert M. McLean, MD, said in a press statement. “Physicians should perform an individualized risk assessment for colorectal cancer in all adults. Doctors and patients should select the screening test based on a discussion of the benefits, harms, costs, availability, frequency, and patient preferences.”

The guidance is an attempt to balance existing guidelines authored by the U.S. Preventive Services Task Force and the Canadian Task Force on Preventive Health Care (CTFPHC), but it also was developed following critical review of those from the American Cancer Society and other organizations.

The ACP guidance is for adults at average risk for colorectal cancer who do not have symptoms; it does not apply to adults with a family history of colorectal cancer, a long-standing history of inflammatory bowel disease, genetic syndromes such as familial cancerous polyps, a personal history of previous colorectal cancer or benign polyps, or other risk factors.

The guidance was based on evaluations of stool-based tests, including the fecal immunochemical test (FIT), also called the immunochemical-based fecal occult blood test (FOBT), and direct visualization with endoscopic and radiologic tests, including flexible sigmoidoscopy, colonoscopy, and CT colonography. The guidance includes the following recommendations:
 

Clinicians should regularly screen for colorectal cancer in average-risk adults between the ages of 50 and 75 years.

This recommendation is in line with those made by the U.S. Preventive Services Task Force and the CTFPHC. Data suggest that regular screening reduces colorectal cancer–specific mortality in this age group, with those aged 65-75 years likely to garner the most benefit.

The absolute risk reduction increases with age and varies with test type. For every-other-year FOBT, it rises from 0.037% in those younger than 60 years to 0.20% in those aged 60 years or older. For flexible sigmoidoscopy, the risk reduction rises from 0.05% in the younger group to 0.29% in the older group.

Data from the CTFPHC show that the net benefit in those aged 50-59 years is small, however. This may influence the decision about when to start screening.


 

Clinicians should select the colorectal cancer screening test with the patient based on a discussion of benefits, harms, costs, availability, frequency, and patient preferences.

The FIT or FOBT should be performed every 2 years, colonoscopy every 10 years, and flexible sigmoidoscopy every 10 years, plus FIT every 2 years.

No data suggest a benefit of one test over another; however, “all screening tests are associated with potential benefits as well as harms,” the document states. “Clinical decisions need to be individualized using patient clinical characteristics, patient preferences, and screening test frequency and availability. Because many eligible patients have never been screened and some may not adhere to recommendations about subsequent screening or follow-up of positive findings on screening tests (such as colonoscopy after a positive result on a stool-based screening test), patient informed decision making and adherence are important factors in selection of a [colorectal cancer] screening test.”

Discussions with patients should include topics like the recommended frequency of each test, bowel preparation, anesthesia, transportation to and from testing site, time commitments, and the necessary steps if a test result is positive.
 

Clinicians should discontinue screening for colorectal cancer in average-risk adults older than 75 years or in adults with a life expectancy of 10 years or less.

While the benefit from screening increases with age, so do the risks for harm, especially serious harm. Data show the balance of harms and benefits reaching a tipping point at around 75 years of age. But again, this isn’t a universal recommendation, the statement says.

“Persons with no history of [colorectal cancer] screening may benefit from screening after age 75 years, whereas those who have received regular screening with negative results may not.”

Cessation of testing considers life expectancy after age 75 years. The average life expectancy for healthy 75-year-old men and women in the United States is 9.9 and 12 years, respectively. But among men and women with serious medical comorbidities, average life expectancy after age 70 years drops to 8.9 and 10.8 years, respectively.

“Therefore, most persons aged 75 years or older, as well as most adults who are younger than 75 years but have serious comorbid conditions [such as chronic renal failure], are unlikely to benefit from screening but would undergo unnecessary, burdensome, potentially harmful, and costly screening tests.”

As in any testing discussion, personal preferences are important, but not just to make patients feel comfortable about their choice. Mindset about colorectal cancer testing has a very big effect on compliance, the statement noted.

“For example, a biennial stool test is not a good screening strategy for patients who may be unwilling or unlikely to follow up every other year. In addition, given the tradeoffs between benefits and harms, some patients may want less intensive screening, such as screening that begins at a later age, stops at an earlier age, or recurs less frequently regardless of modality selected.”

[email protected]

SOURCE: Qassam A et al. Ann Intern Med. 2019;171:643-54.

SAN ANTONIO – The evidence that statin therapy reduces the risk of developing hepatocellular carcinoma, while not rising to the highest-level 1A strata, is nonetheless sufficiently persuasive at this point that consideration should be given to prescribing a statin in all patients with risk factors for the malignancy, regardless of their cardiovascular risk profile, Muhammad Talal Sarmini, MD, asserted at the annual meeting of the American College of Gastroenterology.

Bruce Jancin/MDedge News

This includes individuals with hepatitis B or C virus infection as well as those with cirrhosis. The jury is still out as to whether nonalcoholic steatohepatitis is a risk factor for hepatocellular carcinoma (HCC), observed Dr. Sarmini of the Cleveland Clinic.

He presented a new meta-analysis, which concluded that patients on statin therapy had a 43% lower risk of new-onset HCC than persons not taking a statin. This meta-analysis – the largest ever addressing the issue – included 20 studies totaling more than 2.6 million patients and 24,341 cases of new-onset HCC. There were 11 retrospective case-control studies, 6 cohort studies, and 3 randomized trials. Five studies were from the United States, nine from Asia, and six were European.

In subgroup analyses aimed at assessing the consistency of the study results across various domains, there was a 45% reduction in the risk of HCC in association with statin therapy in the three studies of patients with hepatitis B virus, and significant reductions as well in Asia, Europe, and the United States when those participants were evaluated separately. The reduction was significant in both the case-control and cohort studies, but not when the three randomized, controlled trials (RCTs) were analyzed collectively. However, Dr. Sarmini shrugged off the neutral RCT results.

“It’s worth noting that the RCTs reported data from patients who were on statins with 4-5 years of follow-up. They were not at high risk for HCC. Given the nature of the disease and the relatively short period of follow-up, these studies only reported 81 cases of HCC. So they were very limited,” he said.

Audience members were eager to learn if Dr. Sarmini had found a differential preventive effect for lipophilic statins, such as atorvastatin or simvastatin, versus hydrophilic statins. He replied that, unfortunately, the published study results don’t allow for such an analysis. However, a large, propensity-matched cohort study published too recently for inclusion in his meta-analysis shed light on this matter. This Swedish national registry study included 16,668 propensity score–matched adults with chronic hepatitis B or C infection, of whom 6,554 initiated lipophilic statin therapy, 1,780 began treatment with a hydrophilic statin, and the rest were statin nonusers. The lipophilic statin users had an adjusted 44% reduction in 10-year HCC risk, compared with nonusers, while hydrophilic statins weren’t associated with a significant preventive effect (Ann Intern Med. 2019 Sep 3;171[5]:318-27).

Dr. Sarmini said that the meta-analysis results, together with the Swedish registry findings, highlight the need for additional well-designed cohort studies and RCTs of statins in populations at high risk for HCC in order to verify the existence of an HCC preventive effect and pinpoint which statins are effective at what dosages.

HCC is the fourth-leading cause of cancer-related mortality globally, accounting for 800,000 deaths annually. And the incidence is rising on a year-by-year basis.

Dr. Sarmini reported having no financial conflicts regarding his study, which was conducted free of commercial support.

[email protected]

SAN ANTONIO – The evidence that statin therapy reduces the risk of developing hepatocellular carcinoma, while not rising to the highest-level 1A strata, is nonetheless sufficiently persuasive at this point that consideration should be given to prescribing a statin in all patients with risk factors for the malignancy, regardless of their cardiovascular risk profile, Muhammad Talal Sarmini, MD, asserted at the annual meeting of the American College of Gastroenterology.

Bruce Jancin/MDedge News

This includes individuals with hepatitis B or C virus infection as well as those with cirrhosis. The jury is still out as to whether nonalcoholic steatohepatitis is a risk factor for hepatocellular carcinoma (HCC), observed Dr. Sarmini of the Cleveland Clinic.

He presented a new meta-analysis, which concluded that patients on statin therapy had a 43% lower risk of new-onset HCC than persons not taking a statin. This meta-analysis – the largest ever addressing the issue – included 20 studies totaling more than 2.6 million patients and 24,341 cases of new-onset HCC. There were 11 retrospective case-control studies, 6 cohort studies, and 3 randomized trials. Five studies were from the United States, nine from Asia, and six were European.

In subgroup analyses aimed at assessing the consistency of the study results across various domains, there was a 45% reduction in the risk of HCC in association with statin therapy in the three studies of patients with hepatitis B virus, and significant reductions as well in Asia, Europe, and the United States when those participants were evaluated separately. The reduction was significant in both the case-control and cohort studies, but not when the three randomized, controlled trials (RCTs) were analyzed collectively. However, Dr. Sarmini shrugged off the neutral RCT results.

“It’s worth noting that the RCTs reported data from patients who were on statins with 4-5 years of follow-up. They were not at high risk for HCC. Given the nature of the disease and the relatively short period of follow-up, these studies only reported 81 cases of HCC. So they were very limited,” he said.

Audience members were eager to learn if Dr. Sarmini had found a differential preventive effect for lipophilic statins, such as atorvastatin or simvastatin, versus hydrophilic statins. He replied that, unfortunately, the published study results don’t allow for such an analysis. However, a large, propensity-matched cohort study published too recently for inclusion in his meta-analysis shed light on this matter. This Swedish national registry study included 16,668 propensity score–matched adults with chronic hepatitis B or C infection, of whom 6,554 initiated lipophilic statin therapy, 1,780 began treatment with a hydrophilic statin, and the rest were statin nonusers. The lipophilic statin users had an adjusted 44% reduction in 10-year HCC risk, compared with nonusers, while hydrophilic statins weren’t associated with a significant preventive effect (Ann Intern Med. 2019 Sep 3;171[5]:318-27).

Dr. Sarmini said that the meta-analysis results, together with the Swedish registry findings, highlight the need for additional well-designed cohort studies and RCTs of statins in populations at high risk for HCC in order to verify the existence of an HCC preventive effect and pinpoint which statins are effective at what dosages.

HCC is the fourth-leading cause of cancer-related mortality globally, accounting for 800,000 deaths annually. And the incidence is rising on a year-by-year basis.

Dr. Sarmini reported having no financial conflicts regarding his study, which was conducted free of commercial support.

[email protected]

SAN ANTONIO – The evidence that statin therapy reduces the risk of developing hepatocellular carcinoma, while not rising to the highest-level 1A strata, is nonetheless sufficiently persuasive at this point that consideration should be given to prescribing a statin in all patients with risk factors for the malignancy, regardless of their cardiovascular risk profile, Muhammad Talal Sarmini, MD, asserted at the annual meeting of the American College of Gastroenterology.

Bruce Jancin/MDedge News

This includes individuals with hepatitis B or C virus infection as well as those with cirrhosis. The jury is still out as to whether nonalcoholic steatohepatitis is a risk factor for hepatocellular carcinoma (HCC), observed Dr. Sarmini of the Cleveland Clinic.

He presented a new meta-analysis, which concluded that patients on statin therapy had a 43% lower risk of new-onset HCC than persons not taking a statin. This meta-analysis – the largest ever addressing the issue – included 20 studies totaling more than 2.6 million patients and 24,341 cases of new-onset HCC. There were 11 retrospective case-control studies, 6 cohort studies, and 3 randomized trials. Five studies were from the United States, nine from Asia, and six were European.

In subgroup analyses aimed at assessing the consistency of the study results across various domains, there was a 45% reduction in the risk of HCC in association with statin therapy in the three studies of patients with hepatitis B virus, and significant reductions as well in Asia, Europe, and the United States when those participants were evaluated separately. The reduction was significant in both the case-control and cohort studies, but not when the three randomized, controlled trials (RCTs) were analyzed collectively. However, Dr. Sarmini shrugged off the neutral RCT results.

“It’s worth noting that the RCTs reported data from patients who were on statins with 4-5 years of follow-up. They were not at high risk for HCC. Given the nature of the disease and the relatively short period of follow-up, these studies only reported 81 cases of HCC. So they were very limited,” he said.

Audience members were eager to learn if Dr. Sarmini had found a differential preventive effect for lipophilic statins, such as atorvastatin or simvastatin, versus hydrophilic statins. He replied that, unfortunately, the published study results don’t allow for such an analysis. However, a large, propensity-matched cohort study published too recently for inclusion in his meta-analysis shed light on this matter. This Swedish national registry study included 16,668 propensity score–matched adults with chronic hepatitis B or C infection, of whom 6,554 initiated lipophilic statin therapy, 1,780 began treatment with a hydrophilic statin, and the rest were statin nonusers. The lipophilic statin users had an adjusted 44% reduction in 10-year HCC risk, compared with nonusers, while hydrophilic statins weren’t associated with a significant preventive effect (Ann Intern Med. 2019 Sep 3;171[5]:318-27).

Dr. Sarmini said that the meta-analysis results, together with the Swedish registry findings, highlight the need for additional well-designed cohort studies and RCTs of statins in populations at high risk for HCC in order to verify the existence of an HCC preventive effect and pinpoint which statins are effective at what dosages.

HCC is the fourth-leading cause of cancer-related mortality globally, accounting for 800,000 deaths annually. And the incidence is rising on a year-by-year basis.

Dr. Sarmini reported having no financial conflicts regarding his study, which was conducted free of commercial support.

[email protected]

Background: Patients with left-sided infective endocarditis often are treated with prolonged courses of intravenous (IV) antibiotics. The safety of switching from IV to oral antibiotics is unknown.

Dr. Phillips is a hospitalist at Beth Israel Deaconess Medical Center and instructor in medicine at Harvard Medical School.

Background: Patients with left-sided infective endocarditis often are treated with prolonged courses of intravenous (IV) antibiotics. The safety of switching from IV to oral antibiotics is unknown.

Dr. Phillips is a hospitalist at Beth Israel Deaconess Medical Center and instructor in medicine at Harvard Medical School.

Background: Patients with left-sided infective endocarditis often are treated with prolonged courses of intravenous (IV) antibiotics. The safety of switching from IV to oral antibiotics is unknown.

Dr. Phillips is a hospitalist at Beth Israel Deaconess Medical Center and instructor in medicine at Harvard Medical School.

Postmenopausal women who received a probiotic treatment of three Lactobacillus strains had significantly less lumbar spine bone loss, compared with women in a placebo group, according to recent research published in The Lancet Rheumatology.

CharlieAJA/Thinkstock

“The menopausal and early postmenopausal lumbar spine bone loss is substantial in women, and by using a prevention therapy with bacteria naturally occurring in the human gut microbiota we observed a close to complete protection against lumbar spine bone loss in healthy postmenopausal women,” Per-Anders Jansson, MD, chief physician at the University of Gothenburg (Sweden), and colleagues wrote in their study.

Dr. Jansson and colleagues performed a double-blind trial at four centers in Sweden in which 249 postmenopausal women were randomized during April-November 2016 to receive probiotics consisting of three Lactobacillus strains or placebo once per day for 12 months. Participants were healthy women, neither underweight nor overweight, and were postmenopausal, which was defined as being 2-12 years or less from last menstruation. The Lactobacillus strains, L. paracasei 8700:2 (DSM 13434), L. plantarum Heal 9 (DSM 15312), and L. plantarum Heal 19 (DSM 15313), were equally represented in a capsule at a dose of 1 x 10¹⁰ colony-forming unit per capsule. The researchers measured the lumbar spine bone mineral density (LS-BMD) at baseline and at 12 months, and also evaluated the safety profile of participants in both the probiotic and placebo groups.

Overall, 234 participants (94%) had data available for analysis at the end of the study. There was a significant reduction in LS-BMD loss for participants who received the probiotic treatment, compared with women in the control group (mean difference, 0.71%; 95% confidence interval, 0.06%-1.35%), while there was a significant loss in LS-BMD for participants in the placebo group (percentage change, –0.72%; 95% CI, –1.22% to –0.22%) compared with loss in the probiotic group (percentage change, –0.01%; 95% CI, –0.50% to 0.48%). Using analysis of covariance, the researchers found the probiotic group had reduced LS-BMD loss after adjustment for factors such as study site, age at baseline, BMD at baseline, and number of years from menopause (mean difference, 7.44 mg/cm²; 95% CI, 0.38 to 14.50).

In a subgroup analysis of women above and below the median time since menopause at baseline (6 years), participants in the probiotic group who were below the median time saw a significant protective effect of Lactobacillus treatment (mean difference, 1.08%; 95% CI, 0.20%-1.96%), compared with women above the median time (mean difference, 0.31%; 95% CI, –0.62% to 1.23%).

Researchers also examined the effects of probiotic treatment on total hip and femoral neck BMD as secondary endpoints. Lactobacillus treatment did not appear to affect total hip (–1.01%; 95% CI, –1.65% to –0.37%) or trochanter BMD (–1.13%; 95% CI, –2.27% to 0.20%), but femoral neck BMD was reduced in the probiotic group (–1.34%; 95% CI, –2.09% to –0.58%), compared with the placebo group (–0.88%; 95% CI, –1.64% to –0.13%).

Limitations of the study included examining only one dose of Lactobacillus treatment and no analysis of the effect of short-chain fatty acids on LS-BMD. The researchers noted that “recent studies have shown that short-chain fatty acids, which are generated by fermentation of complex carbohydrates by the gut microbiota, are important regulators of both bone formation and resorption.”

The researchers also acknowledged that the LS-BMD effect size for the probiotic treatment over the 12 months was a lower magnitude, compared with first-line treatments for osteoporosis in postmenopausal women using bisphosphonates. “Further long-term studies should be done to evaluate if the bone-protective effect becomes more pronounced with prolonged treatment with the Lactobacillus strains used in the present study,” they said.

In a related editorial, Shivani Sahni, PhD, of Harvard Medical School, Boston, and Connie M. Weaver, PhD, of Purdue University, West Lafayette, Ind., reiterated that the effect size of probiotics is “of far less magnitude” than such treatments as bisphosphonates and expressed concern about the reduction of femoral neck BMD in the probiotic group, which was not explained in the study (Lancet Rheumatol. 2019 Nov;1[3]:e135-e137. doi: 10.1016/S2665-9913(19)30073-6). There is a need to learn the optimum dose of probiotics as well as which Lactobacillus strains should be used in future studies, as the strains chosen by Jansson et al. were based on results in mice.

In the meantime, patients might be better off choosing dietary interventions with proven bone protection and no documented negative effects on the hip, such as prebiotics like soluble corn fiber and dried prunes, in tandem with drug therapies, Dr. Sahni and Dr. Weaver said.

“Although Jansson and colleagues’ results are important, more work is needed before such probiotics are ready for consumers,” they concluded.

This study was funded by Probi, which employs two of the study’s authors. Three authors reported being coinventors of a patent involving the effects of probiotics in osteoporosis treatment, and one author is listed as an inventor on a pending patent application on probiotic compositions and uses. Dr. Sahni reported receiving grants from Dairy Management. Dr. Weaver reported no relevant conflicts of interest.

SOURCE: Jansson P-A et al. Lancet Rheumatol. 2019 Nov;1(3):e154-e162. doi: 10.1016/S2665-9913(19)30068-2

Postmenopausal women who received a probiotic treatment of three Lactobacillus strains had significantly less lumbar spine bone loss, compared with women in a placebo group, according to recent research published in The Lancet Rheumatology.

CharlieAJA/Thinkstock

“The menopausal and early postmenopausal lumbar spine bone loss is substantial in women, and by using a prevention therapy with bacteria naturally occurring in the human gut microbiota we observed a close to complete protection against lumbar spine bone loss in healthy postmenopausal women,” Per-Anders Jansson, MD, chief physician at the University of Gothenburg (Sweden), and colleagues wrote in their study.

Dr. Jansson and colleagues performed a double-blind trial at four centers in Sweden in which 249 postmenopausal women were randomized during April-November 2016 to receive probiotics consisting of three Lactobacillus strains or placebo once per day for 12 months. Participants were healthy women, neither underweight nor overweight, and were postmenopausal, which was defined as being 2-12 years or less from last menstruation. The Lactobacillus strains, L. paracasei 8700:2 (DSM 13434), L. plantarum Heal 9 (DSM 15312), and L. plantarum Heal 19 (DSM 15313), were equally represented in a capsule at a dose of 1 x 10¹⁰ colony-forming unit per capsule. The researchers measured the lumbar spine bone mineral density (LS-BMD) at baseline and at 12 months, and also evaluated the safety profile of participants in both the probiotic and placebo groups.

Overall, 234 participants (94%) had data available for analysis at the end of the study. There was a significant reduction in LS-BMD loss for participants who received the probiotic treatment, compared with women in the control group (mean difference, 0.71%; 95% confidence interval, 0.06%-1.35%), while there was a significant loss in LS-BMD for participants in the placebo group (percentage change, –0.72%; 95% CI, –1.22% to –0.22%) compared with loss in the probiotic group (percentage change, –0.01%; 95% CI, –0.50% to 0.48%). Using analysis of covariance, the researchers found the probiotic group had reduced LS-BMD loss after adjustment for factors such as study site, age at baseline, BMD at baseline, and number of years from menopause (mean difference, 7.44 mg/cm²; 95% CI, 0.38 to 14.50).

In a subgroup analysis of women above and below the median time since menopause at baseline (6 years), participants in the probiotic group who were below the median time saw a significant protective effect of Lactobacillus treatment (mean difference, 1.08%; 95% CI, 0.20%-1.96%), compared with women above the median time (mean difference, 0.31%; 95% CI, –0.62% to 1.23%).

Researchers also examined the effects of probiotic treatment on total hip and femoral neck BMD as secondary endpoints. Lactobacillus treatment did not appear to affect total hip (–1.01%; 95% CI, –1.65% to –0.37%) or trochanter BMD (–1.13%; 95% CI, –2.27% to 0.20%), but femoral neck BMD was reduced in the probiotic group (–1.34%; 95% CI, –2.09% to –0.58%), compared with the placebo group (–0.88%; 95% CI, –1.64% to –0.13%).

Limitations of the study included examining only one dose of Lactobacillus treatment and no analysis of the effect of short-chain fatty acids on LS-BMD. The researchers noted that “recent studies have shown that short-chain fatty acids, which are generated by fermentation of complex carbohydrates by the gut microbiota, are important regulators of both bone formation and resorption.”

The researchers also acknowledged that the LS-BMD effect size for the probiotic treatment over the 12 months was a lower magnitude, compared with first-line treatments for osteoporosis in postmenopausal women using bisphosphonates. “Further long-term studies should be done to evaluate if the bone-protective effect becomes more pronounced with prolonged treatment with the Lactobacillus strains used in the present study,” they said.

In a related editorial, Shivani Sahni, PhD, of Harvard Medical School, Boston, and Connie M. Weaver, PhD, of Purdue University, West Lafayette, Ind., reiterated that the effect size of probiotics is “of far less magnitude” than such treatments as bisphosphonates and expressed concern about the reduction of femoral neck BMD in the probiotic group, which was not explained in the study (Lancet Rheumatol. 2019 Nov;1[3]:e135-e137. doi: 10.1016/S2665-9913(19)30073-6). There is a need to learn the optimum dose of probiotics as well as which Lactobacillus strains should be used in future studies, as the strains chosen by Jansson et al. were based on results in mice.

In the meantime, patients might be better off choosing dietary interventions with proven bone protection and no documented negative effects on the hip, such as prebiotics like soluble corn fiber and dried prunes, in tandem with drug therapies, Dr. Sahni and Dr. Weaver said.

“Although Jansson and colleagues’ results are important, more work is needed before such probiotics are ready for consumers,” they concluded.

This study was funded by Probi, which employs two of the study’s authors. Three authors reported being coinventors of a patent involving the effects of probiotics in osteoporosis treatment, and one author is listed as an inventor on a pending patent application on probiotic compositions and uses. Dr. Sahni reported receiving grants from Dairy Management. Dr. Weaver reported no relevant conflicts of interest.

SOURCE: Jansson P-A et al. Lancet Rheumatol. 2019 Nov;1(3):e154-e162. doi: 10.1016/S2665-9913(19)30068-2

Postmenopausal women who received a probiotic treatment of three Lactobacillus strains had significantly less lumbar spine bone loss, compared with women in a placebo group, according to recent research published in The Lancet Rheumatology.

CharlieAJA/Thinkstock

“The menopausal and early postmenopausal lumbar spine bone loss is substantial in women, and by using a prevention therapy with bacteria naturally occurring in the human gut microbiota we observed a close to complete protection against lumbar spine bone loss in healthy postmenopausal women,” Per-Anders Jansson, MD, chief physician at the University of Gothenburg (Sweden), and colleagues wrote in their study.

Dr. Jansson and colleagues performed a double-blind trial at four centers in Sweden in which 249 postmenopausal women were randomized during April-November 2016 to receive probiotics consisting of three Lactobacillus strains or placebo once per day for 12 months. Participants were healthy women, neither underweight nor overweight, and were postmenopausal, which was defined as being 2-12 years or less from last menstruation. The Lactobacillus strains, L. paracasei 8700:2 (DSM 13434), L. plantarum Heal 9 (DSM 15312), and L. plantarum Heal 19 (DSM 15313), were equally represented in a capsule at a dose of 1 x 10¹⁰ colony-forming unit per capsule. The researchers measured the lumbar spine bone mineral density (LS-BMD) at baseline and at 12 months, and also evaluated the safety profile of participants in both the probiotic and placebo groups.

Overall, 234 participants (94%) had data available for analysis at the end of the study. There was a significant reduction in LS-BMD loss for participants who received the probiotic treatment, compared with women in the control group (mean difference, 0.71%; 95% confidence interval, 0.06%-1.35%), while there was a significant loss in LS-BMD for participants in the placebo group (percentage change, –0.72%; 95% CI, –1.22% to –0.22%) compared with loss in the probiotic group (percentage change, –0.01%; 95% CI, –0.50% to 0.48%). Using analysis of covariance, the researchers found the probiotic group had reduced LS-BMD loss after adjustment for factors such as study site, age at baseline, BMD at baseline, and number of years from menopause (mean difference, 7.44 mg/cm²; 95% CI, 0.38 to 14.50).

In a subgroup analysis of women above and below the median time since menopause at baseline (6 years), participants in the probiotic group who were below the median time saw a significant protective effect of Lactobacillus treatment (mean difference, 1.08%; 95% CI, 0.20%-1.96%), compared with women above the median time (mean difference, 0.31%; 95% CI, –0.62% to 1.23%).

Researchers also examined the effects of probiotic treatment on total hip and femoral neck BMD as secondary endpoints. Lactobacillus treatment did not appear to affect total hip (–1.01%; 95% CI, –1.65% to –0.37%) or trochanter BMD (–1.13%; 95% CI, –2.27% to 0.20%), but femoral neck BMD was reduced in the probiotic group (–1.34%; 95% CI, –2.09% to –0.58%), compared with the placebo group (–0.88%; 95% CI, –1.64% to –0.13%).

Limitations of the study included examining only one dose of Lactobacillus treatment and no analysis of the effect of short-chain fatty acids on LS-BMD. The researchers noted that “recent studies have shown that short-chain fatty acids, which are generated by fermentation of complex carbohydrates by the gut microbiota, are important regulators of both bone formation and resorption.”

The researchers also acknowledged that the LS-BMD effect size for the probiotic treatment over the 12 months was a lower magnitude, compared with first-line treatments for osteoporosis in postmenopausal women using bisphosphonates. “Further long-term studies should be done to evaluate if the bone-protective effect becomes more pronounced with prolonged treatment with the Lactobacillus strains used in the present study,” they said.

In a related editorial, Shivani Sahni, PhD, of Harvard Medical School, Boston, and Connie M. Weaver, PhD, of Purdue University, West Lafayette, Ind., reiterated that the effect size of probiotics is “of far less magnitude” than such treatments as bisphosphonates and expressed concern about the reduction of femoral neck BMD in the probiotic group, which was not explained in the study (Lancet Rheumatol. 2019 Nov;1[3]:e135-e137. doi: 10.1016/S2665-9913(19)30073-6). There is a need to learn the optimum dose of probiotics as well as which Lactobacillus strains should be used in future studies, as the strains chosen by Jansson et al. were based on results in mice.

In the meantime, patients might be better off choosing dietary interventions with proven bone protection and no documented negative effects on the hip, such as prebiotics like soluble corn fiber and dried prunes, in tandem with drug therapies, Dr. Sahni and Dr. Weaver said.

“Although Jansson and colleagues’ results are important, more work is needed before such probiotics are ready for consumers,” they concluded.

This study was funded by Probi, which employs two of the study’s authors. Three authors reported being coinventors of a patent involving the effects of probiotics in osteoporosis treatment, and one author is listed as an inventor on a pending patent application on probiotic compositions and uses. Dr. Sahni reported receiving grants from Dairy Management. Dr. Weaver reported no relevant conflicts of interest.

SOURCE: Jansson P-A et al. Lancet Rheumatol. 2019 Nov;1(3):e154-e162. doi: 10.1016/S2665-9913(19)30068-2

Patients with ankylosing spondylitis who are male, have evidence of spinal damage, or have higher levels of inflammatory markers may be at higher risk of disease progression, a study has found.

“Assessment of AS-related structural changes longitudinally is essential for understanding the natural course of progression and its underlying factors,” Ismail Sari, MD, of the University of Toronto and coauthors wrote in Arthritis Care & Research. “This could help identify the mechanisms responsible for progression and thereby personalizing treatment.”

The researchers found that nearly one-quarter (24.3%) of 350 individuals with ankylosing spondylitis in a longitudinal cohort study showed radiographic evidence of progression, defined as a change of 2 units on the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) in 2 years. Overall, 76% of the group were males, and the group had a mean age of about 38 years with a mean symptom duration of nearly 15 years.

Over the 6-year follow-up, the mean mSASSS increased from 9.3 units at baseline to 17.7 units, with more progression seen in the cervical spine than the lumbar segments. During the first 2 years, the total mSASSS increased by a mean of 1.23 units; in years 2-4, it increased by a mean of 1.47 units, and from 4 to 6 years, it increased by a mean of 1.52 units.

Male sex was associated with more than double the risk of radiographic progression (hazard ratio, 2.46; 95% confidence interval, 1.05-5.76), while individuals with radiographic evidence of spinal damage at baseline had a nearly eightfold higher risk of progression (HR, 7.98; 95% CI, 3.98-16). The risk for disease progression also increased with higher levels of C-reactive protein.

The investigators also found that patients who had used tumor necrosis factor inhibitor therapy for at least 1 year had an 18% reduction in the rate of spinal progression.

However, other factors including symptom duration, presence of HLA-B27, smoking status, presence of radiographic hip disease, or use of disease-modifying antirheumatic drugs or NSAIDs did not appear to influence the risk of disease progression.

No funding or conflicts of interest were declared.

SOURCE: Sari I et al. Arthritis Care Res. 2019 Nov 1. doi: 10.1002/acr.24104.

Patients with ankylosing spondylitis who are male, have evidence of spinal damage, or have higher levels of inflammatory markers may be at higher risk of disease progression, a study has found.

“Assessment of AS-related structural changes longitudinally is essential for understanding the natural course of progression and its underlying factors,” Ismail Sari, MD, of the University of Toronto and coauthors wrote in Arthritis Care & Research. “This could help identify the mechanisms responsible for progression and thereby personalizing treatment.”

The researchers found that nearly one-quarter (24.3%) of 350 individuals with ankylosing spondylitis in a longitudinal cohort study showed radiographic evidence of progression, defined as a change of 2 units on the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) in 2 years. Overall, 76% of the group were males, and the group had a mean age of about 38 years with a mean symptom duration of nearly 15 years.

Over the 6-year follow-up, the mean mSASSS increased from 9.3 units at baseline to 17.7 units, with more progression seen in the cervical spine than the lumbar segments. During the first 2 years, the total mSASSS increased by a mean of 1.23 units; in years 2-4, it increased by a mean of 1.47 units, and from 4 to 6 years, it increased by a mean of 1.52 units.

Male sex was associated with more than double the risk of radiographic progression (hazard ratio, 2.46; 95% confidence interval, 1.05-5.76), while individuals with radiographic evidence of spinal damage at baseline had a nearly eightfold higher risk of progression (HR, 7.98; 95% CI, 3.98-16). The risk for disease progression also increased with higher levels of C-reactive protein.

The investigators also found that patients who had used tumor necrosis factor inhibitor therapy for at least 1 year had an 18% reduction in the rate of spinal progression.

However, other factors including symptom duration, presence of HLA-B27, smoking status, presence of radiographic hip disease, or use of disease-modifying antirheumatic drugs or NSAIDs did not appear to influence the risk of disease progression.

No funding or conflicts of interest were declared.

SOURCE: Sari I et al. Arthritis Care Res. 2019 Nov 1. doi: 10.1002/acr.24104.

Patients with ankylosing spondylitis who are male, have evidence of spinal damage, or have higher levels of inflammatory markers may be at higher risk of disease progression, a study has found.

“Assessment of AS-related structural changes longitudinally is essential for understanding the natural course of progression and its underlying factors,” Ismail Sari, MD, of the University of Toronto and coauthors wrote in Arthritis Care & Research. “This could help identify the mechanisms responsible for progression and thereby personalizing treatment.”

The researchers found that nearly one-quarter (24.3%) of 350 individuals with ankylosing spondylitis in a longitudinal cohort study showed radiographic evidence of progression, defined as a change of 2 units on the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) in 2 years. Overall, 76% of the group were males, and the group had a mean age of about 38 years with a mean symptom duration of nearly 15 years.

Over the 6-year follow-up, the mean mSASSS increased from 9.3 units at baseline to 17.7 units, with more progression seen in the cervical spine than the lumbar segments. During the first 2 years, the total mSASSS increased by a mean of 1.23 units; in years 2-4, it increased by a mean of 1.47 units, and from 4 to 6 years, it increased by a mean of 1.52 units.

Male sex was associated with more than double the risk of radiographic progression (hazard ratio, 2.46; 95% confidence interval, 1.05-5.76), while individuals with radiographic evidence of spinal damage at baseline had a nearly eightfold higher risk of progression (HR, 7.98; 95% CI, 3.98-16). The risk for disease progression also increased with higher levels of C-reactive protein.

The investigators also found that patients who had used tumor necrosis factor inhibitor therapy for at least 1 year had an 18% reduction in the rate of spinal progression.

However, other factors including symptom duration, presence of HLA-B27, smoking status, presence of radiographic hip disease, or use of disease-modifying antirheumatic drugs or NSAIDs did not appear to influence the risk of disease progression.

No funding or conflicts of interest were declared.

SOURCE: Sari I et al. Arthritis Care Res. 2019 Nov 1. doi: 10.1002/acr.24104.

A toll-like receptor 9 (TLR9) antagonist may eventually be used to combat brain edema in acute liver failure, according to investigators.

This prediction is based on results of a recent study involving mouse models, which showed that ODN2088, a TLR9 antagonist, could stop ammonia-induced colocalization of DNA with TLR9 in innate immune cells, thereby blocking cytokine production and ensuant brain edema, reported lead author Godhev Kumar Manakkat Vijay of King’s College London and colleagues.

“Ammonia plays a pivotal role in the development of hepatic encephalopathy and brain edema in acute liver failure,” the investigators explained in Cellular and Molecular Gastroenterology and Hepatology. “A robust systemic inflammatory response and susceptibility to developing infection are common in acute liver failure, exacerbate the development of ammonia-induced brain edema and are major prognosticators. Experimental models have unequivocally associated ammonia exposure with astrocyte swelling and brain edema, potentiated by proinflammatory cytokines.”

The investigators added that, “although the evidence base supporting the relationship between ammonia, inflammation, and brain edema is robust in acute liver failure, there is a paucity of data characterizing the specific pathogenic mechanisms entailed.” Previous research suggested that TLR9 plays a key role in acetaminophen-induced liver inflammation, they noted, and that ammonia, in combination with DNA, triggers TLR9 expression in neutrophils, which brought TLR9 into focus for the present study.

Along with wild-type mice, the investigators relied upon two knockout models: TLR9–/– mice, in which TLR9 is entirely absent, and LysM-Cre TLR9fl/fl mice, in which TLR9 is absent from lysozyme-expressing cells (predominantly neutrophils and macrophages). Comparing against controls, the investigators assessed cytokine production and brain edema in each type of mouse when intraperitoneally injected with ammonium acetate (4 mmol/kg). Specifically, 6 hours after injection, they measured intracellular cytokines in splenic macrophages, CD8+ T cells, and CD4+ T cells. In addition, they recorded total plasma DNA and brain water, a measure of brain edema.

Following ammonium acetate injection, wild-type mice developed brain edema and liver enlargement, while TLR9–/– mice and control-injected mice did not. After injection, total plasma DNA levels rose by comparable magnitudes in both wild-type mice and TLR9–/– mice, but did not change in control-injected mice, suggesting that ammonium-acetate injection was causing a release of DNA, which was binding with TLR9, resulting in activation of the innate immune system.

This hypothesis was supported by measurements of cytokines in T cells and splenic macrophages, which showed that wild-type mice had elevations of cytokines, whereas knockout mice did not. Further experiments showed that LysM-Cre TLR9fl/fl mice had similar outcomes as TLR9–/– mice, highlighting that macrophages and neutrophils are the key immune cells linking TLR9 activation with cytokine release, and therefore brain edema.

To ensure that brain edema was not directly caused by the acetate component of ammonium acetate, or acetate’s potential to increase pH, a different set of wild-type mice were injected with sodium acetate adjusted to the same pH as ammonium acetate. This had no impact on cytokine production, brain-water content, or liver-to-body weight ratio, confirming that acetate was not responsible for brain edema while providing further support for the role of TLR9.

Finally, the investigators treated wild-type mice immediately after ammonium acetate injection with the TLR9 antagonist ODN2088 (50 mcg/mouse). This treatment halted cytokine production, inflammation, and brain edema, strongly supporting the link between these ammonia-induced processes and TLR9 activation.

“These data are well supported by the findings of Imaeda et al. (J Clin Invest. 2009 Feb 2. doi: 10.1172/JCI35958), who in an acetaminophen-induced hepatotoxicity model established that inhibition of TLR9 using ODN2088 and IRS954, a TLR7/9 antagonist, down-regulated proinflammatory cytokine release and reduced mortality,” the investigators wrote. “The amelioration of brain edema and cytokine production by ODN2088 supports exploration of TLR9 antagonism as a therapeutic modality in early acute liver failure to prevent the development of brain edema and intracranial hypertension.”

The study was funded by the U.K. Institute of Liver Studies Charitable Fund and the National Institutes of Health. The investigators reported no conflicts of interest.

SOURCE: Vijay GKM et al. Cell Mol Gastroenterol Hepatol. 2019 Aug 8. doi: 10.1016/j.jcmgh.2019.08.002.

A toll-like receptor 9 (TLR9) antagonist may eventually be used to combat brain edema in acute liver failure, according to investigators.

This prediction is based on results of a recent study involving mouse models, which showed that ODN2088, a TLR9 antagonist, could stop ammonia-induced colocalization of DNA with TLR9 in innate immune cells, thereby blocking cytokine production and ensuant brain edema, reported lead author Godhev Kumar Manakkat Vijay of King’s College London and colleagues.

“Ammonia plays a pivotal role in the development of hepatic encephalopathy and brain edema in acute liver failure,” the investigators explained in Cellular and Molecular Gastroenterology and Hepatology. “A robust systemic inflammatory response and susceptibility to developing infection are common in acute liver failure, exacerbate the development of ammonia-induced brain edema and are major prognosticators. Experimental models have unequivocally associated ammonia exposure with astrocyte swelling and brain edema, potentiated by proinflammatory cytokines.”

The investigators added that, “although the evidence base supporting the relationship between ammonia, inflammation, and brain edema is robust in acute liver failure, there is a paucity of data characterizing the specific pathogenic mechanisms entailed.” Previous research suggested that TLR9 plays a key role in acetaminophen-induced liver inflammation, they noted, and that ammonia, in combination with DNA, triggers TLR9 expression in neutrophils, which brought TLR9 into focus for the present study.

Along with wild-type mice, the investigators relied upon two knockout models: TLR9–/– mice, in which TLR9 is entirely absent, and LysM-Cre TLR9fl/fl mice, in which TLR9 is absent from lysozyme-expressing cells (predominantly neutrophils and macrophages). Comparing against controls, the investigators assessed cytokine production and brain edema in each type of mouse when intraperitoneally injected with ammonium acetate (4 mmol/kg). Specifically, 6 hours after injection, they measured intracellular cytokines in splenic macrophages, CD8+ T cells, and CD4+ T cells. In addition, they recorded total plasma DNA and brain water, a measure of brain edema.

Following ammonium acetate injection, wild-type mice developed brain edema and liver enlargement, while TLR9–/– mice and control-injected mice did not. After injection, total plasma DNA levels rose by comparable magnitudes in both wild-type mice and TLR9–/– mice, but did not change in control-injected mice, suggesting that ammonium-acetate injection was causing a release of DNA, which was binding with TLR9, resulting in activation of the innate immune system.

This hypothesis was supported by measurements of cytokines in T cells and splenic macrophages, which showed that wild-type mice had elevations of cytokines, whereas knockout mice did not. Further experiments showed that LysM-Cre TLR9fl/fl mice had similar outcomes as TLR9–/– mice, highlighting that macrophages and neutrophils are the key immune cells linking TLR9 activation with cytokine release, and therefore brain edema.

To ensure that brain edema was not directly caused by the acetate component of ammonium acetate, or acetate’s potential to increase pH, a different set of wild-type mice were injected with sodium acetate adjusted to the same pH as ammonium acetate. This had no impact on cytokine production, brain-water content, or liver-to-body weight ratio, confirming that acetate was not responsible for brain edema while providing further support for the role of TLR9.

Finally, the investigators treated wild-type mice immediately after ammonium acetate injection with the TLR9 antagonist ODN2088 (50 mcg/mouse). This treatment halted cytokine production, inflammation, and brain edema, strongly supporting the link between these ammonia-induced processes and TLR9 activation.

“These data are well supported by the findings of Imaeda et al. (J Clin Invest. 2009 Feb 2. doi: 10.1172/JCI35958), who in an acetaminophen-induced hepatotoxicity model established that inhibition of TLR9 using ODN2088 and IRS954, a TLR7/9 antagonist, down-regulated proinflammatory cytokine release and reduced mortality,” the investigators wrote. “The amelioration of brain edema and cytokine production by ODN2088 supports exploration of TLR9 antagonism as a therapeutic modality in early acute liver failure to prevent the development of brain edema and intracranial hypertension.”

The study was funded by the U.K. Institute of Liver Studies Charitable Fund and the National Institutes of Health. The investigators reported no conflicts of interest.

SOURCE: Vijay GKM et al. Cell Mol Gastroenterol Hepatol. 2019 Aug 8. doi: 10.1016/j.jcmgh.2019.08.002.

A toll-like receptor 9 (TLR9) antagonist may eventually be used to combat brain edema in acute liver failure, according to investigators.

This prediction is based on results of a recent study involving mouse models, which showed that ODN2088, a TLR9 antagonist, could stop ammonia-induced colocalization of DNA with TLR9 in innate immune cells, thereby blocking cytokine production and ensuant brain edema, reported lead author Godhev Kumar Manakkat Vijay of King’s College London and colleagues.

“Ammonia plays a pivotal role in the development of hepatic encephalopathy and brain edema in acute liver failure,” the investigators explained in Cellular and Molecular Gastroenterology and Hepatology. “A robust systemic inflammatory response and susceptibility to developing infection are common in acute liver failure, exacerbate the development of ammonia-induced brain edema and are major prognosticators. Experimental models have unequivocally associated ammonia exposure with astrocyte swelling and brain edema, potentiated by proinflammatory cytokines.”

The investigators added that, “although the evidence base supporting the relationship between ammonia, inflammation, and brain edema is robust in acute liver failure, there is a paucity of data characterizing the specific pathogenic mechanisms entailed.” Previous research suggested that TLR9 plays a key role in acetaminophen-induced liver inflammation, they noted, and that ammonia, in combination with DNA, triggers TLR9 expression in neutrophils, which brought TLR9 into focus for the present study.

Along with wild-type mice, the investigators relied upon two knockout models: TLR9–/– mice, in which TLR9 is entirely absent, and LysM-Cre TLR9fl/fl mice, in which TLR9 is absent from lysozyme-expressing cells (predominantly neutrophils and macrophages). Comparing against controls, the investigators assessed cytokine production and brain edema in each type of mouse when intraperitoneally injected with ammonium acetate (4 mmol/kg). Specifically, 6 hours after injection, they measured intracellular cytokines in splenic macrophages, CD8+ T cells, and CD4+ T cells. In addition, they recorded total plasma DNA and brain water, a measure of brain edema.

Following ammonium acetate injection, wild-type mice developed brain edema and liver enlargement, while TLR9–/– mice and control-injected mice did not. After injection, total plasma DNA levels rose by comparable magnitudes in both wild-type mice and TLR9–/– mice, but did not change in control-injected mice, suggesting that ammonium-acetate injection was causing a release of DNA, which was binding with TLR9, resulting in activation of the innate immune system.

This hypothesis was supported by measurements of cytokines in T cells and splenic macrophages, which showed that wild-type mice had elevations of cytokines, whereas knockout mice did not. Further experiments showed that LysM-Cre TLR9fl/fl mice had similar outcomes as TLR9–/– mice, highlighting that macrophages and neutrophils are the key immune cells linking TLR9 activation with cytokine release, and therefore brain edema.

To ensure that brain edema was not directly caused by the acetate component of ammonium acetate, or acetate’s potential to increase pH, a different set of wild-type mice were injected with sodium acetate adjusted to the same pH as ammonium acetate. This had no impact on cytokine production, brain-water content, or liver-to-body weight ratio, confirming that acetate was not responsible for brain edema while providing further support for the role of TLR9.

Finally, the investigators treated wild-type mice immediately after ammonium acetate injection with the TLR9 antagonist ODN2088 (50 mcg/mouse). This treatment halted cytokine production, inflammation, and brain edema, strongly supporting the link between these ammonia-induced processes and TLR9 activation.

“These data are well supported by the findings of Imaeda et al. (J Clin Invest. 2009 Feb 2. doi: 10.1172/JCI35958), who in an acetaminophen-induced hepatotoxicity model established that inhibition of TLR9 using ODN2088 and IRS954, a TLR7/9 antagonist, down-regulated proinflammatory cytokine release and reduced mortality,” the investigators wrote. “The amelioration of brain edema and cytokine production by ODN2088 supports exploration of TLR9 antagonism as a therapeutic modality in early acute liver failure to prevent the development of brain edema and intracranial hypertension.”

The study was funded by the U.K. Institute of Liver Studies Charitable Fund and the National Institutes of Health. The investigators reported no conflicts of interest.

SOURCE: Vijay GKM et al. Cell Mol Gastroenterol Hepatol. 2019 Aug 8. doi: 10.1016/j.jcmgh.2019.08.002.

The association between type 2 diabetes (T2D) and cardiovascular (CV) disease is well-established:

• Type 2 diabetes approximately doubles the risk of coronary artery disease, stroke, and peripheral arterial disease, independent of conventional risk factors¹
• CV disease is the leading cause of morbidity and mortality in patients with T2D
• CV disease is the largest contributor to direct and indirect costs of the health care of patients who have T2D.²

In recent years, new classes of agents for treating T2D have been introduced (TABLE 1). Prior to 2008, the US Food and Drug Administration (FDA) approved drugs in those new classes based simply on their effectiveness in reducing the blood glucose level. Concerns about the CV safety of specific drugs (eg, rosiglitazone, muraglitazar) emerged from a number of trials, suggesting that these agents might increase the risk of CV events.^3,4

All glucose-lowering medications used to treat type 2 diabetes are not equally effective in reducing CV complications.

Consequently, in 2008, the FDA issued guidance to the pharmaceutical industry: Preapproval and postapproval trials of all new antidiabetic drugs must now assess potential excess CV risk.⁵ CV outcomes trials (CVOTs), performed in accordance with FDA guidelines, have therefore become the focus of evaluating novel treatment options. In most CVOTs, combined primary CV endpoints have included CV mortality, nonfatal myocardial infarction (MI), and nonfatal stroke—taken together, what is known as the composite of these 3 major adverse CV events, or MACE-3.

To date, 15 CVOTs have been completed, assessing 3 novel classes of antihyperglycemic agents:

• dipeptidyl peptidase-4 (DPP-4) inhibitors
• glucagon-like peptide-1 (GLP-1) receptor agonists
• sodium–glucose cotransporter-2 (SGLT-2) inhibitors.

None of these trials identified any increased incidence of MACE; 7 found CV benefit. This review summarizes what the CVOTs revealed about these antihyperglycemic agents and their ability to yield a reduction in MACE and a decrease in all-cause mortality in patients with T2D and elevated CV disease risk. Armed with this information, you will have the tools you need to offer patients with T2D CV benefit while managing their primary disease.

Cardiovascular outcomes trials: DPP-4 inhibitors

Four trials. Trials of DPP-4 inhibitors that have been completed and reported are of saxagliptin (SAVOR-TIMI 53⁶), alogliptin (EXAMINE⁷), sitagliptin (TECOS⁸), and linagliptin (CARMELINA⁹); others are in progress. In general, researchers enrolled patients at high risk of CV events, although inclusion criteria varied substantially. Consistently, these studies demonstrated that DPP-4 inhibition neither increased nor decreased (ie, were noninferior) the 3-point MACE (SAVOR-TIMI 53 noninferiority, P < .001; EXAMINE, P < .001; TECOS, P < .001).

Continue to: Rather than improve...

Rather than improve CV outcomes, there was some evidence that DPP-4 inhibitors might be associated with an increased risk of hospitalization for heart failure (HHF). In the SAVOR-TIMI 53 trial, patients randomized to saxagliptin had a 0.7% absolute increase in risk of HHF (P = .98).⁶ In the EXAMINE trial, patients treated with alogliptin showed a nonsignificant trend for HHF.¹⁰ In both the TECOS and CARMELINA trials, no difference was recorded in the rate of HHF.^8,9,11 Subsequent meta-analysis that summarized the risk of HHF in CVOTs with DPP-4 inhibitors indicated a nonsignificant trend to increased risk.¹²

It’s likely that the CV benefits result from mechanisms other than a reduction in the serum glucose level, given the short time frame of the studies and the magnitude of the CV benefit.

From these trials alone, it appears that DPP-4 inhibitors are unlikely to provide CV benefit. Data from additional trials are needed to evaluate the possible association between these medications and heart failure (HF). However, largely as a result of the findings from SAVOR-TIMI 53 and EXAMINE, the FDA issued a Drug Safety Communication in April 2016, adding warnings about HF to the labeling of saxagliptin and alogliptin.¹³

CARMELINA was designed to also evaluate kidney outcomes in patients with T2D. As with other DPP-4 inhibitor trials, the primary aim was to establish noninferiority, compared with placebo, for time to MACE-3 (P < .001). Secondary outcomes were defined as time to first occurrence of end-stage renal disease, death due to renal failure, and sustained decrease from baseline of ≥ 40% in the estimated glomerular filtration rate. The incidence of the secondary kidney composite results was not significantly different between groups randomized to linagliptin or placebo.⁹

Cardiovascular outcomes trials: GLP-1 receptor agonists

ELIXA. The CV safety of GLP-1 receptor agonists has been evaluated in several randomized clinical trials. The Evaluation of Lixisenatide in Acute Coronary Syndrome (ELIXA) trial was the first¹⁴: Lixisenatide was studied in 6068 patients with recent hospitalization for acute coronary syndrome. Lixisenatide therapy was neutral with regard to CV outcomes, which met the primary endpoint: noninferiority to placebo (P < .001). There was no increase in either HF or HHF.

Continue to: LEADER

LEADER. The Liraglutide Effect and Action in Diabetes: Evaluation of Cardiovascular Outcome Results trial (LEADER) evaluated long-term effects of liraglutide, compared to placebo, on CV events in patients with T2D.¹⁵ It was a multicenter, double-blind, placebocontrolled study that followed 9340 participants, most (81%) of whom had established CV disease, over 5 years. LEADER is considered a landmark study because it was the first large CVOT to show significant benefit for a GLP-1 receptor agonist.

Liraglutide demonstrated reductions in first occurrence of death from CV causes, nonfatal MI or nonfatal stroke, overall CV mortality, and all-cause mortality. The composite MACE-3 showed a relative risk reduction (RRR) of 13%, equivalent to an absolute risk reduction (ARR) of 1.9% (noninferiority, P < .001; superiority, P < .01). The RRR was 22% for death from CV causes, with an ARR of 1.3% (P = .007); the RRR for death from any cause was 15%, with an ARR of 1.4% (P = .02).

In addition, there was a lower rate of nephropathy (1.5 events for every 100 patient–years in the liraglutide group [P = .003], compared with 1.9 events every 100 patient–years in the placebo group).¹⁵

Results clearly demonstrated benefit. No significant difference was seen in the liraglutide rate of HHF, compared to the rate in the placebo group.

SUSTAIN-6. Evidence for the CV benefit of GLP-1 receptor agonists was also demonstrated in the phase 3 Trial to Evaluate Cardiovascular and Other Long-term Outcomes With Semaglutide in Subjects With Type 2 Diabetes (SUSTAIN-6).¹⁶ This was a study of 3297 patients with T2D at high risk of CV disease and with a mean hemoglobin A_1c (HbA_1c) value of 8.7%, 83% of whom had established CV disease. Patients were randomized to semaglutide or placebo. Note: SUSTAIN-6 was a noninferiority safety study; as such, it was not actually designed to assess or establish superiority.

Continue to: The incidence of MACE-3...

The incidence of MACE-3 was significantly reduced among patients treated with semaglutide (P = .02) after median followup of 2.1 years. The expanded composite outcome (death from CV causes, nonfatal MI, nonfatal stroke, coronary revascularization, or hospitalization for unstable angina or HF), also showed a significant reduction with semaglutide (P = .002), compared with placebo. There was no difference in the overall hospitalization rate or rate of death from any cause.

EXSCEL. The Exenatide Study of Cardiovascular Event Lowering trial (EXSCEL)^17,18 was a phase III/IV, double-blind, pragmatic placebo-controlled study of 14,752 patients at any level of CV risk, for a median 3.2 years. The study population was intentionally more diverse than in earlier GLP-1 receptor agonist studies. The researchers hypothesized that patients at increased risk of MACE would experience a comparatively greater relative treatment benefit with exenatide than those at lower risk. That did not prove to be the case.

EXSCEL did confirm noninferiority compared with placebo (P < .001), but once-weekly exenatide resulted in a nonsignificant reduction in major adverse CV events, and a trend for RRR in all-cause mortality (RRR = 14%; ARR = 1% [P = .06]).

HARMONY OUTCOMES. The Albiglutide and Cardiovascular Outcomes in Patients With Type 2 Diabetes and Cardiovascular Disease study (HARMONY OUTCOMES)¹⁹ was a double-blind, randomized, placebocontrolled trial conducted at 610 sites across 28 countries. The study investigated albiglutide, 30 to 50 mg once weekly, compared with placebo. It included 9463 patients ages ≥ 40 years with T2D who had an HbA_1c > 7% (median value, 8.7%) and established CV disease. Patients were evaluated for a median 1.6 years.

Albiglutide reduced the risk of CV causes of death, nonfatal MI, and nonfatal stroke by an RRR of 22%, (ARR, 2%) (noninferiority, P < .0001; superiority, P < .0006).

Continue to: REWIND

REWIND. The Researching Cardiovascular Events with a Weekly INcretin in Diabetes trial (REWIND),²⁰ the most recently completed GLP-1 receptor agonist CVOT (presented at the 2019 American Diabetes Association [ADA] Conference in June and published simultaneously in The Lancet), was a multicenter, randomized, double-blind placebo-controlled trial designed to assess the effect of weekly dulaglutide, 1.5 mg, compared with placebo, in 9901 participants enrolled at 371 sites in 24 countries. Mean patient age was 66.2 years, with women constituting 4589 (46.3%) of participants.

REWIND was distinct from other CVOTs in several ways:

• Other CVOTs were designed to show noninferiority compared with placebo regarding CV events; REWIND was designed to establish superiority
• In contrast to trials of other GLP-1 receptor agonists, in which most patients had established CV disease, only 31% of REWIND participants had a history of CV disease or a prior CV event (although 69% did have CV risk factors without underlying disease)
• REWIND was much longer (median follow-up, 5.4 years) than other GLP-1 receptor agonist trials (median follow-up, 1.5 to 3.8 years).

In REWIND, the primary composite outcome of MACE-3 occurred in 12% of participants assigned to dulaglutide, compared with 13.1% assigned to placebo (P = .026). This equated to 2.4 events for every 100 person– years on dulaglutide, compared with 2.7 events for every 100 person–years on placebo. There was a consistent effect on all MACE-3 components, although the greatest reductions were observed in nonfatal stroke (P = .017). Overall risk reduction was the same for primary and secondary prevention cohorts (P = .97), as well as in patients with either an HbA_1c value < 7.2% or ≥ 7.2% (P = .75). Risk reduction was consistent across age, sex, duration of T2D, and body mass index.

Dulaglutide did not significantly affect the incidence of all-cause mortality, heart failure, revascularization, or hospital admission. Forty-seven percent of patients taking dulaglutide reported gastrointestinal adverse effects (P = .0001).

Cases of bullous pemphigoid have been reported after initiation of DPP-4 inhibitor therapy.

In a separate analysis of secondary outcomes, ²¹ dulaglutide reduced the composite renal outcomes of new-onset macroalbuminuria (P = .0001); decline of ≥ 30% in the estimated glomerular filtration rate (P = .066); and chronic renal replacement therapy (P = .39). Investigators estimated that 1 composite renal outcome event would be prevented for every 31 patients treated with dulaglutide for a median 5.4 years.

Continue to: Cardiovascular outcomes trials...

Cardiovascular outcomes trials: SGLT-2 inhibitors

EMPA-REG OUTCOME. The Empagliflozin, Cardiovascular Outcomes, and Mortality in Type 2 Diabetes trial (EMPA-REG OUTCOME) was also a landmark study because it was the first dedicated CVOT to show that an antihyperglycemic agent 1) decreased CV mortality and all-cause mortality, and 2) reduced HHF in patients with T2D and established CV disease.22 In this trial, 7020 patients with T2D who were at high risk of CV events were randomized and treated with empagliflozin, 10 or 25 mg, or placebo, in addition to standard care, and were followed for a median 2.6 years.

In October, the FDA approved dapaglifozin to reduce the risk of hospitalization for heart failure in adults with T2D and established CV disease.

Compared with placebo, empagliflozin resulted in an RRR of 14% (ARR, 1.6%) in the primary endpoint of CV death, nonfatal MI, and stroke, confirming study drug superiority (P = .04). When compared with placebo, the empagliflozin group had an RRR of 38% in CV mortality, (ARR < 2.2%) (P < .001); an RRR of 35% in HHF (ARR, 1.4%) (P = .002); and an RRR of 32% (ARR, 2.6%) in death from any cause (P < .001).

CANVAS. The Canagliflozin Cardiovascular Assessment Study (CANVAS) integrated 2 multicenter, placebo-controlled, randomized trials with 10,142 participants and a mean follow-up of 3.6 years.²³ Patients were randomized to receive canagliflozin (100-300 mg/d) or placebo. Approximately two-thirds of patients had a history of CV disease (therefore representing secondary prevention); one-third had CV risk factors only (primary prevention).

In CANVAS, patients receiving canagliflozin had a risk reduction in MACE-3, establishing superiority compared with placebo (P < .001). There was also a significant reduction in progression of albuminuria (P < .05). Superiority was not shown for the secondary outcome of death from any cause. Canagliflozin had no effect on the primary endpoint (MACE-3) in the subgroup of participants who did not have a history of CV disease. Similar to what was found with empagliflozin in EMPA-REG OUTCOME, CANVAS participants had a reduced risk of HHF.

Continue to: Patients on canagliflozin...

Patients on canagliflozin unexpectedly had an increased incidence of amputations (6.3 participants, compared with 3.4 participants, for every 1000 patient–years). This finding led to a black box warning for canagliflozin about the risk of lower-limb amputation.

DECLARE-TIMI 58. The Dapagliflozin Effect of Cardiovascular Events-Thrombolysis in Myocardial Infarction 58 trial (DECLARETIMI 58) was the largest SGLT-2 inhibitor outcomes trial to date, enrolling 17,160 patients with T2D who also had established CV disease or multiple risk factors for atherosclerotic CV disease. The trial compared dapagliflozin, 10 mg/d, and placebo, following patients for a median 4.2 years.²⁴ Unlike CANVAS and EMPA-REG OUTCOME, DECLARE-TIMI 58 included CV death and HHF as primary outcomes, in addition to MACE-3.

Dapagliflozin was noninferior to placebo with regard to MACE-3. However, its use did result in a lower rate of CV death and HHF by an RRR of 17% (ARR, 1.9%). Risk reduction was greatest in patients with HF who had a reduced ejection fraction (ARR = 9.2%).²⁵

In October, the FDA approved dapagliflozin to reduce the risk of HHF in adults with T2D and established CV disease or multiple CV risk factors. Before initiating the drug, physicians should evaluate the patient's renal function and monitor periodically.

Meta-analyses of SGLT-2 inhibitors

Systematic review. Usman et al released a meta-analysis in 2018 that included 35 randomized, placebo-controlled trials (including EMPA-REG OUTCOME, CANVAS, and DECLARE-TIMI 58) that had assessed the use of SGLT-2 inhibitors in nearly 35,000 patients with T2D.²⁶ This review concluded that, as a class, SGLT-2 inhibitors reduce all-cause mortality, major adverse cardiac events, nonfatal MI, and HF and HHF, compared with placebo.

Continue to: CVD-REAL

CVD-REAL. A separate study, Comparative Effectiveness of Cardiovascular Outcomes in New Users of SGLT-2 Inhibitors (CVD-REAL), of 154,528 patients who were treated with canagliflozin, dapagliflozin, or empagliflozin, showed that initiation of SGLT-2 inhibitors, compared with other glucose- lowering therapies, was associated with a 39% reduction in HHF; a 51% reduction in death from any cause; and a 46% reduction in the composite of HHF or death (P < .001).²⁷

CVD-REAL was unique because it was the largest real-world study to assess the effectiveness of SGLT-2 inhibitors on HHF and mortality. The study utilized data from patients in the United States, Norway, Denmark, Sweden, Germany, and the United Kingdom, based on information obtained from medical claims, primary care and hospital records, and national registries that compared patients who were either newly started on an SGLT-2 inhibitor or another glucose-lowering drug. The drug used by most patients in the trial was canagliflozin (53%), followed by dapagliflozin (42%), and empagliflozin (5%).

In this meta-analysis, similar therapeutic effects were seen across countries, regardless of geographic differences, in the use of specific SGLT-2 inhibitors, suggesting a class effect. Of particular significance was that most (87%) patients enrolled in CVD-REAL did not have prior CV disease. Despite this, results for examined outcomes in CVD-REAL were similar to what was seen in other SGLT-2 inhibitor trials that were designed to study patients with established CV disease.

Risk of adverse effects of newer antidiabetic agents

DPP-4 inhibitors. Alogliptin and sitagliptin carry a black-box warning about potential risk of HF. In SAVOR-TIMI, a 27% increase was detected in the rate of HHF after approximately 2 years of saxagliptin therapy.⁶ Although HF should not be considered a class effect for DPP-4 inhibitors, patients who have risk factors for HF should be monitored for signs and symptoms of HF.

Continue to: Cases of acute pancreatitis...

Cases of acute pancreatitis have been reported in association with all DPP-4 inhibitors available in the United States. A combined analysis of DDP-4 inhibitor trials suggested an increased relative risk of 79% and an absolute risk of 0.13%, which translates to 1 or 2 additional cases of acute pancreatitis for every 1000 patients treated for 2 years.²⁸

There have been numerous postmarketing reports of severe joint pain in patients taking a DPP-4 inhibitor. Most recently, cases of bullous pemphigoid have been reported after initiation of DPP-4 inhibitor therapy.²⁹

GLP-1 receptor agonists carry a black box warning for medullary thyroid (C-cell) tumor risk. GLP-1 receptor agonists are contraindicated in patients with a personal or family history of this cancer, although this FDA warning is based solely on observations from animal models.

In addition, GLP-1 receptor agonists can increase the risk of cholecystitis and pancreatitis. Not uncommonly, they cause gastrointestinal symptoms when first started and when the dosage is titrated upward. Most GLP-1 receptor agonists can be used in patients with renal impairment, although data regarding their use in Stages 4 and 5 chronic kidney disease are limited.³⁰ Semaglutide was found, in the SUSTAIN-6 trial, to be associated with an increased rate of complications of retinopathy, including vitreous hemorrhage and blindness (P = .02)³¹

SGLT-2 inhibitors are associated with an increased incidence of genitourinary infection, bone fracture (canagliflozin), amputation (canagliflozin), and euglycemic diabetic ketoacidosis. Agents in this class should be avoided in patients with moderate or severe renal impairment, primarily due to a lack of efficacy. They are contraindicated in patients with an estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m2. (Dapagliflozin is not recommended when eGFR is < 45 mL/min/ 1.73 m2.) These agents carry an FDA warning about the risk of acute kidney injury.³⁰

Continue to: Summing up

Summing up

All glucose-lowering medications used to treat T2D are not equally effective in reducing CV complications. Recent CVOTs have uncovered evidence that certain antidiabetic agents might confer CV and all-cause mortality benefits (TABLE 2^{6,7,9,11,14-17,19-24}).

Discussion of proposed mechanisms for CV outcome superiority of these agents is beyond the scope of this review. It is generally believed that benefits result from mechanisms other than a reduction in the serum glucose level, given the relatively short time frame of the studies and the magnitude of the CV benefit. It is almost certain that mechanisms of CV benefit in the 2 landmark studies—LEADER and EMPA-REG OUTCOME—are distinct from each other.³²

See “When planning T2D pharmacotherapy, include newer agents that offer CV benefit,” ^33-38 for a stepwise approach to treating T2D, including the role of agents that have efficacy in modifying the risk of CV disease.

ACKNOWLEDGMENTS
Linda Speer, MD, Kevin Phelps, DO, and Jay Shubrook, DO, provided support and editorial assistance.

CORRESPONDENCE
Robert Gotfried, DO, FAAFP, Department of Family Medicine, University of Toledo College of Medicine, 3333 Glendale Avenue, Toledo, OH 43614; [email protected].

The association between type 2 diabetes (T2D) and cardiovascular (CV) disease is well-established:

• Type 2 diabetes approximately doubles the risk of coronary artery disease, stroke, and peripheral arterial disease, independent of conventional risk factors¹
• CV disease is the leading cause of morbidity and mortality in patients with T2D
• CV disease is the largest contributor to direct and indirect costs of the health care of patients who have T2D.²

In recent years, new classes of agents for treating T2D have been introduced (TABLE 1). Prior to 2008, the US Food and Drug Administration (FDA) approved drugs in those new classes based simply on their effectiveness in reducing the blood glucose level. Concerns about the CV safety of specific drugs (eg, rosiglitazone, muraglitazar) emerged from a number of trials, suggesting that these agents might increase the risk of CV events.^3,4

All glucose-lowering medications used to treat type 2 diabetes are not equally effective in reducing CV complications.

Consequently, in 2008, the FDA issued guidance to the pharmaceutical industry: Preapproval and postapproval trials of all new antidiabetic drugs must now assess potential excess CV risk.⁵ CV outcomes trials (CVOTs), performed in accordance with FDA guidelines, have therefore become the focus of evaluating novel treatment options. In most CVOTs, combined primary CV endpoints have included CV mortality, nonfatal myocardial infarction (MI), and nonfatal stroke—taken together, what is known as the composite of these 3 major adverse CV events, or MACE-3.

To date, 15 CVOTs have been completed, assessing 3 novel classes of antihyperglycemic agents:

• dipeptidyl peptidase-4 (DPP-4) inhibitors
• glucagon-like peptide-1 (GLP-1) receptor agonists
• sodium–glucose cotransporter-2 (SGLT-2) inhibitors.

None of these trials identified any increased incidence of MACE; 7 found CV benefit. This review summarizes what the CVOTs revealed about these antihyperglycemic agents and their ability to yield a reduction in MACE and a decrease in all-cause mortality in patients with T2D and elevated CV disease risk. Armed with this information, you will have the tools you need to offer patients with T2D CV benefit while managing their primary disease.

Cardiovascular outcomes trials: DPP-4 inhibitors

Four trials. Trials of DPP-4 inhibitors that have been completed and reported are of saxagliptin (SAVOR-TIMI 53⁶), alogliptin (EXAMINE⁷), sitagliptin (TECOS⁸), and linagliptin (CARMELINA⁹); others are in progress. In general, researchers enrolled patients at high risk of CV events, although inclusion criteria varied substantially. Consistently, these studies demonstrated that DPP-4 inhibition neither increased nor decreased (ie, were noninferior) the 3-point MACE (SAVOR-TIMI 53 noninferiority, P < .001; EXAMINE, P < .001; TECOS, P < .001).

Continue to: Rather than improve...

Rather than improve CV outcomes, there was some evidence that DPP-4 inhibitors might be associated with an increased risk of hospitalization for heart failure (HHF). In the SAVOR-TIMI 53 trial, patients randomized to saxagliptin had a 0.7% absolute increase in risk of HHF (P = .98).⁶ In the EXAMINE trial, patients treated with alogliptin showed a nonsignificant trend for HHF.¹⁰ In both the TECOS and CARMELINA trials, no difference was recorded in the rate of HHF.^8,9,11 Subsequent meta-analysis that summarized the risk of HHF in CVOTs with DPP-4 inhibitors indicated a nonsignificant trend to increased risk.¹²

It’s likely that the CV benefits result from mechanisms other than a reduction in the serum glucose level, given the short time frame of the studies and the magnitude of the CV benefit.

From these trials alone, it appears that DPP-4 inhibitors are unlikely to provide CV benefit. Data from additional trials are needed to evaluate the possible association between these medications and heart failure (HF). However, largely as a result of the findings from SAVOR-TIMI 53 and EXAMINE, the FDA issued a Drug Safety Communication in April 2016, adding warnings about HF to the labeling of saxagliptin and alogliptin.¹³

CARMELINA was designed to also evaluate kidney outcomes in patients with T2D. As with other DPP-4 inhibitor trials, the primary aim was to establish noninferiority, compared with placebo, for time to MACE-3 (P < .001). Secondary outcomes were defined as time to first occurrence of end-stage renal disease, death due to renal failure, and sustained decrease from baseline of ≥ 40% in the estimated glomerular filtration rate. The incidence of the secondary kidney composite results was not significantly different between groups randomized to linagliptin or placebo.⁹

Cardiovascular outcomes trials: GLP-1 receptor agonists

ELIXA. The CV safety of GLP-1 receptor agonists has been evaluated in several randomized clinical trials. The Evaluation of Lixisenatide in Acute Coronary Syndrome (ELIXA) trial was the first¹⁴: Lixisenatide was studied in 6068 patients with recent hospitalization for acute coronary syndrome. Lixisenatide therapy was neutral with regard to CV outcomes, which met the primary endpoint: noninferiority to placebo (P < .001). There was no increase in either HF or HHF.

Continue to: LEADER

LEADER. The Liraglutide Effect and Action in Diabetes: Evaluation of Cardiovascular Outcome Results trial (LEADER) evaluated long-term effects of liraglutide, compared to placebo, on CV events in patients with T2D.¹⁵ It was a multicenter, double-blind, placebocontrolled study that followed 9340 participants, most (81%) of whom had established CV disease, over 5 years. LEADER is considered a landmark study because it was the first large CVOT to show significant benefit for a GLP-1 receptor agonist.

Liraglutide demonstrated reductions in first occurrence of death from CV causes, nonfatal MI or nonfatal stroke, overall CV mortality, and all-cause mortality. The composite MACE-3 showed a relative risk reduction (RRR) of 13%, equivalent to an absolute risk reduction (ARR) of 1.9% (noninferiority, P < .001; superiority, P < .01). The RRR was 22% for death from CV causes, with an ARR of 1.3% (P = .007); the RRR for death from any cause was 15%, with an ARR of 1.4% (P = .02).

In addition, there was a lower rate of nephropathy (1.5 events for every 100 patient–years in the liraglutide group [P = .003], compared with 1.9 events every 100 patient–years in the placebo group).¹⁵

Results clearly demonstrated benefit. No significant difference was seen in the liraglutide rate of HHF, compared to the rate in the placebo group.

SUSTAIN-6. Evidence for the CV benefit of GLP-1 receptor agonists was also demonstrated in the phase 3 Trial to Evaluate Cardiovascular and Other Long-term Outcomes With Semaglutide in Subjects With Type 2 Diabetes (SUSTAIN-6).¹⁶ This was a study of 3297 patients with T2D at high risk of CV disease and with a mean hemoglobin A_1c (HbA_1c) value of 8.7%, 83% of whom had established CV disease. Patients were randomized to semaglutide or placebo. Note: SUSTAIN-6 was a noninferiority safety study; as such, it was not actually designed to assess or establish superiority.

Continue to: The incidence of MACE-3...

The incidence of MACE-3 was significantly reduced among patients treated with semaglutide (P = .02) after median followup of 2.1 years. The expanded composite outcome (death from CV causes, nonfatal MI, nonfatal stroke, coronary revascularization, or hospitalization for unstable angina or HF), also showed a significant reduction with semaglutide (P = .002), compared with placebo. There was no difference in the overall hospitalization rate or rate of death from any cause.

EXSCEL. The Exenatide Study of Cardiovascular Event Lowering trial (EXSCEL)^17,18 was a phase III/IV, double-blind, pragmatic placebo-controlled study of 14,752 patients at any level of CV risk, for a median 3.2 years. The study population was intentionally more diverse than in earlier GLP-1 receptor agonist studies. The researchers hypothesized that patients at increased risk of MACE would experience a comparatively greater relative treatment benefit with exenatide than those at lower risk. That did not prove to be the case.

EXSCEL did confirm noninferiority compared with placebo (P < .001), but once-weekly exenatide resulted in a nonsignificant reduction in major adverse CV events, and a trend for RRR in all-cause mortality (RRR = 14%; ARR = 1% [P = .06]).

HARMONY OUTCOMES. The Albiglutide and Cardiovascular Outcomes in Patients With Type 2 Diabetes and Cardiovascular Disease study (HARMONY OUTCOMES)¹⁹ was a double-blind, randomized, placebocontrolled trial conducted at 610 sites across 28 countries. The study investigated albiglutide, 30 to 50 mg once weekly, compared with placebo. It included 9463 patients ages ≥ 40 years with T2D who had an HbA_1c > 7% (median value, 8.7%) and established CV disease. Patients were evaluated for a median 1.6 years.

Albiglutide reduced the risk of CV causes of death, nonfatal MI, and nonfatal stroke by an RRR of 22%, (ARR, 2%) (noninferiority, P < .0001; superiority, P < .0006).

Continue to: REWIND

REWIND. The Researching Cardiovascular Events with a Weekly INcretin in Diabetes trial (REWIND),²⁰ the most recently completed GLP-1 receptor agonist CVOT (presented at the 2019 American Diabetes Association [ADA] Conference in June and published simultaneously in The Lancet), was a multicenter, randomized, double-blind placebo-controlled trial designed to assess the effect of weekly dulaglutide, 1.5 mg, compared with placebo, in 9901 participants enrolled at 371 sites in 24 countries. Mean patient age was 66.2 years, with women constituting 4589 (46.3%) of participants.

REWIND was distinct from other CVOTs in several ways:

• Other CVOTs were designed to show noninferiority compared with placebo regarding CV events; REWIND was designed to establish superiority
• In contrast to trials of other GLP-1 receptor agonists, in which most patients had established CV disease, only 31% of REWIND participants had a history of CV disease or a prior CV event (although 69% did have CV risk factors without underlying disease)
• REWIND was much longer (median follow-up, 5.4 years) than other GLP-1 receptor agonist trials (median follow-up, 1.5 to 3.8 years).

In REWIND, the primary composite outcome of MACE-3 occurred in 12% of participants assigned to dulaglutide, compared with 13.1% assigned to placebo (P = .026). This equated to 2.4 events for every 100 person– years on dulaglutide, compared with 2.7 events for every 100 person–years on placebo. There was a consistent effect on all MACE-3 components, although the greatest reductions were observed in nonfatal stroke (P = .017). Overall risk reduction was the same for primary and secondary prevention cohorts (P = .97), as well as in patients with either an HbA_1c value < 7.2% or ≥ 7.2% (P = .75). Risk reduction was consistent across age, sex, duration of T2D, and body mass index.

Dulaglutide did not significantly affect the incidence of all-cause mortality, heart failure, revascularization, or hospital admission. Forty-seven percent of patients taking dulaglutide reported gastrointestinal adverse effects (P = .0001).

Cases of bullous pemphigoid have been reported after initiation of DPP-4 inhibitor therapy.

In a separate analysis of secondary outcomes, ²¹ dulaglutide reduced the composite renal outcomes of new-onset macroalbuminuria (P = .0001); decline of ≥ 30% in the estimated glomerular filtration rate (P = .066); and chronic renal replacement therapy (P = .39). Investigators estimated that 1 composite renal outcome event would be prevented for every 31 patients treated with dulaglutide for a median 5.4 years.

Continue to: Cardiovascular outcomes trials...

Cardiovascular outcomes trials: SGLT-2 inhibitors

EMPA-REG OUTCOME. The Empagliflozin, Cardiovascular Outcomes, and Mortality in Type 2 Diabetes trial (EMPA-REG OUTCOME) was also a landmark study because it was the first dedicated CVOT to show that an antihyperglycemic agent 1) decreased CV mortality and all-cause mortality, and 2) reduced HHF in patients with T2D and established CV disease.22 In this trial, 7020 patients with T2D who were at high risk of CV events were randomized and treated with empagliflozin, 10 or 25 mg, or placebo, in addition to standard care, and were followed for a median 2.6 years.

In October, the FDA approved dapaglifozin to reduce the risk of hospitalization for heart failure in adults with T2D and established CV disease.

Compared with placebo, empagliflozin resulted in an RRR of 14% (ARR, 1.6%) in the primary endpoint of CV death, nonfatal MI, and stroke, confirming study drug superiority (P = .04). When compared with placebo, the empagliflozin group had an RRR of 38% in CV mortality, (ARR < 2.2%) (P < .001); an RRR of 35% in HHF (ARR, 1.4%) (P = .002); and an RRR of 32% (ARR, 2.6%) in death from any cause (P < .001).

CANVAS. The Canagliflozin Cardiovascular Assessment Study (CANVAS) integrated 2 multicenter, placebo-controlled, randomized trials with 10,142 participants and a mean follow-up of 3.6 years.²³ Patients were randomized to receive canagliflozin (100-300 mg/d) or placebo. Approximately two-thirds of patients had a history of CV disease (therefore representing secondary prevention); one-third had CV risk factors only (primary prevention).

In CANVAS, patients receiving canagliflozin had a risk reduction in MACE-3, establishing superiority compared with placebo (P < .001). There was also a significant reduction in progression of albuminuria (P < .05). Superiority was not shown for the secondary outcome of death from any cause. Canagliflozin had no effect on the primary endpoint (MACE-3) in the subgroup of participants who did not have a history of CV disease. Similar to what was found with empagliflozin in EMPA-REG OUTCOME, CANVAS participants had a reduced risk of HHF.

Continue to: Patients on canagliflozin...

Patients on canagliflozin unexpectedly had an increased incidence of amputations (6.3 participants, compared with 3.4 participants, for every 1000 patient–years). This finding led to a black box warning for canagliflozin about the risk of lower-limb amputation.

DECLARE-TIMI 58. The Dapagliflozin Effect of Cardiovascular Events-Thrombolysis in Myocardial Infarction 58 trial (DECLARETIMI 58) was the largest SGLT-2 inhibitor outcomes trial to date, enrolling 17,160 patients with T2D who also had established CV disease or multiple risk factors for atherosclerotic CV disease. The trial compared dapagliflozin, 10 mg/d, and placebo, following patients for a median 4.2 years.²⁴ Unlike CANVAS and EMPA-REG OUTCOME, DECLARE-TIMI 58 included CV death and HHF as primary outcomes, in addition to MACE-3.

Dapagliflozin was noninferior to placebo with regard to MACE-3. However, its use did result in a lower rate of CV death and HHF by an RRR of 17% (ARR, 1.9%). Risk reduction was greatest in patients with HF who had a reduced ejection fraction (ARR = 9.2%).²⁵

In October, the FDA approved dapagliflozin to reduce the risk of HHF in adults with T2D and established CV disease or multiple CV risk factors. Before initiating the drug, physicians should evaluate the patient's renal function and monitor periodically.

Meta-analyses of SGLT-2 inhibitors

Systematic review. Usman et al released a meta-analysis in 2018 that included 35 randomized, placebo-controlled trials (including EMPA-REG OUTCOME, CANVAS, and DECLARE-TIMI 58) that had assessed the use of SGLT-2 inhibitors in nearly 35,000 patients with T2D.²⁶ This review concluded that, as a class, SGLT-2 inhibitors reduce all-cause mortality, major adverse cardiac events, nonfatal MI, and HF and HHF, compared with placebo.

Continue to: CVD-REAL

CVD-REAL. A separate study, Comparative Effectiveness of Cardiovascular Outcomes in New Users of SGLT-2 Inhibitors (CVD-REAL), of 154,528 patients who were treated with canagliflozin, dapagliflozin, or empagliflozin, showed that initiation of SGLT-2 inhibitors, compared with other glucose- lowering therapies, was associated with a 39% reduction in HHF; a 51% reduction in death from any cause; and a 46% reduction in the composite of HHF or death (P < .001).²⁷

CVD-REAL was unique because it was the largest real-world study to assess the effectiveness of SGLT-2 inhibitors on HHF and mortality. The study utilized data from patients in the United States, Norway, Denmark, Sweden, Germany, and the United Kingdom, based on information obtained from medical claims, primary care and hospital records, and national registries that compared patients who were either newly started on an SGLT-2 inhibitor or another glucose-lowering drug. The drug used by most patients in the trial was canagliflozin (53%), followed by dapagliflozin (42%), and empagliflozin (5%).

In this meta-analysis, similar therapeutic effects were seen across countries, regardless of geographic differences, in the use of specific SGLT-2 inhibitors, suggesting a class effect. Of particular significance was that most (87%) patients enrolled in CVD-REAL did not have prior CV disease. Despite this, results for examined outcomes in CVD-REAL were similar to what was seen in other SGLT-2 inhibitor trials that were designed to study patients with established CV disease.

Risk of adverse effects of newer antidiabetic agents

DPP-4 inhibitors. Alogliptin and sitagliptin carry a black-box warning about potential risk of HF. In SAVOR-TIMI, a 27% increase was detected in the rate of HHF after approximately 2 years of saxagliptin therapy.⁶ Although HF should not be considered a class effect for DPP-4 inhibitors, patients who have risk factors for HF should be monitored for signs and symptoms of HF.

Continue to: Cases of acute pancreatitis...

Cases of acute pancreatitis have been reported in association with all DPP-4 inhibitors available in the United States. A combined analysis of DDP-4 inhibitor trials suggested an increased relative risk of 79% and an absolute risk of 0.13%, which translates to 1 or 2 additional cases of acute pancreatitis for every 1000 patients treated for 2 years.²⁸

There have been numerous postmarketing reports of severe joint pain in patients taking a DPP-4 inhibitor. Most recently, cases of bullous pemphigoid have been reported after initiation of DPP-4 inhibitor therapy.²⁹

GLP-1 receptor agonists carry a black box warning for medullary thyroid (C-cell) tumor risk. GLP-1 receptor agonists are contraindicated in patients with a personal or family history of this cancer, although this FDA warning is based solely on observations from animal models.

In addition, GLP-1 receptor agonists can increase the risk of cholecystitis and pancreatitis. Not uncommonly, they cause gastrointestinal symptoms when first started and when the dosage is titrated upward. Most GLP-1 receptor agonists can be used in patients with renal impairment, although data regarding their use in Stages 4 and 5 chronic kidney disease are limited.³⁰ Semaglutide was found, in the SUSTAIN-6 trial, to be associated with an increased rate of complications of retinopathy, including vitreous hemorrhage and blindness (P = .02)³¹

SGLT-2 inhibitors are associated with an increased incidence of genitourinary infection, bone fracture (canagliflozin), amputation (canagliflozin), and euglycemic diabetic ketoacidosis. Agents in this class should be avoided in patients with moderate or severe renal impairment, primarily due to a lack of efficacy. They are contraindicated in patients with an estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m2. (Dapagliflozin is not recommended when eGFR is < 45 mL/min/ 1.73 m2.) These agents carry an FDA warning about the risk of acute kidney injury.³⁰

Continue to: Summing up

Summing up

All glucose-lowering medications used to treat T2D are not equally effective in reducing CV complications. Recent CVOTs have uncovered evidence that certain antidiabetic agents might confer CV and all-cause mortality benefits (TABLE 2^{6,7,9,11,14-17,19-24}).

Discussion of proposed mechanisms for CV outcome superiority of these agents is beyond the scope of this review. It is generally believed that benefits result from mechanisms other than a reduction in the serum glucose level, given the relatively short time frame of the studies and the magnitude of the CV benefit. It is almost certain that mechanisms of CV benefit in the 2 landmark studies—LEADER and EMPA-REG OUTCOME—are distinct from each other.³²

See “When planning T2D pharmacotherapy, include newer agents that offer CV benefit,” ^33-38 for a stepwise approach to treating T2D, including the role of agents that have efficacy in modifying the risk of CV disease.

ACKNOWLEDGMENTS
Linda Speer, MD, Kevin Phelps, DO, and Jay Shubrook, DO, provided support and editorial assistance.

CORRESPONDENCE
Robert Gotfried, DO, FAAFP, Department of Family Medicine, University of Toledo College of Medicine, 3333 Glendale Avenue, Toledo, OH 43614; [email protected].

The association between type 2 diabetes (T2D) and cardiovascular (CV) disease is well-established:

• Type 2 diabetes approximately doubles the risk of coronary artery disease, stroke, and peripheral arterial disease, independent of conventional risk factors¹
• CV disease is the leading cause of morbidity and mortality in patients with T2D
• CV disease is the largest contributor to direct and indirect costs of the health care of patients who have T2D.²

In recent years, new classes of agents for treating T2D have been introduced (TABLE 1). Prior to 2008, the US Food and Drug Administration (FDA) approved drugs in those new classes based simply on their effectiveness in reducing the blood glucose level. Concerns about the CV safety of specific drugs (eg, rosiglitazone, muraglitazar) emerged from a number of trials, suggesting that these agents might increase the risk of CV events.^3,4

All glucose-lowering medications used to treat type 2 diabetes are not equally effective in reducing CV complications.

Consequently, in 2008, the FDA issued guidance to the pharmaceutical industry: Preapproval and postapproval trials of all new antidiabetic drugs must now assess potential excess CV risk.⁵ CV outcomes trials (CVOTs), performed in accordance with FDA guidelines, have therefore become the focus of evaluating novel treatment options. In most CVOTs, combined primary CV endpoints have included CV mortality, nonfatal myocardial infarction (MI), and nonfatal stroke—taken together, what is known as the composite of these 3 major adverse CV events, or MACE-3.

To date, 15 CVOTs have been completed, assessing 3 novel classes of antihyperglycemic agents:

• dipeptidyl peptidase-4 (DPP-4) inhibitors
• glucagon-like peptide-1 (GLP-1) receptor agonists
• sodium–glucose cotransporter-2 (SGLT-2) inhibitors.

None of these trials identified any increased incidence of MACE; 7 found CV benefit. This review summarizes what the CVOTs revealed about these antihyperglycemic agents and their ability to yield a reduction in MACE and a decrease in all-cause mortality in patients with T2D and elevated CV disease risk. Armed with this information, you will have the tools you need to offer patients with T2D CV benefit while managing their primary disease.

Cardiovascular outcomes trials: DPP-4 inhibitors

Four trials. Trials of DPP-4 inhibitors that have been completed and reported are of saxagliptin (SAVOR-TIMI 53⁶), alogliptin (EXAMINE⁷), sitagliptin (TECOS⁸), and linagliptin (CARMELINA⁹); others are in progress. In general, researchers enrolled patients at high risk of CV events, although inclusion criteria varied substantially. Consistently, these studies demonstrated that DPP-4 inhibition neither increased nor decreased (ie, were noninferior) the 3-point MACE (SAVOR-TIMI 53 noninferiority, P < .001; EXAMINE, P < .001; TECOS, P < .001).

Continue to: Rather than improve...

Rather than improve CV outcomes, there was some evidence that DPP-4 inhibitors might be associated with an increased risk of hospitalization for heart failure (HHF). In the SAVOR-TIMI 53 trial, patients randomized to saxagliptin had a 0.7% absolute increase in risk of HHF (P = .98).⁶ In the EXAMINE trial, patients treated with alogliptin showed a nonsignificant trend for HHF.¹⁰ In both the TECOS and CARMELINA trials, no difference was recorded in the rate of HHF.^8,9,11 Subsequent meta-analysis that summarized the risk of HHF in CVOTs with DPP-4 inhibitors indicated a nonsignificant trend to increased risk.¹²

It’s likely that the CV benefits result from mechanisms other than a reduction in the serum glucose level, given the short time frame of the studies and the magnitude of the CV benefit.

From these trials alone, it appears that DPP-4 inhibitors are unlikely to provide CV benefit. Data from additional trials are needed to evaluate the possible association between these medications and heart failure (HF). However, largely as a result of the findings from SAVOR-TIMI 53 and EXAMINE, the FDA issued a Drug Safety Communication in April 2016, adding warnings about HF to the labeling of saxagliptin and alogliptin.¹³

CARMELINA was designed to also evaluate kidney outcomes in patients with T2D. As with other DPP-4 inhibitor trials, the primary aim was to establish noninferiority, compared with placebo, for time to MACE-3 (P < .001). Secondary outcomes were defined as time to first occurrence of end-stage renal disease, death due to renal failure, and sustained decrease from baseline of ≥ 40% in the estimated glomerular filtration rate. The incidence of the secondary kidney composite results was not significantly different between groups randomized to linagliptin or placebo.⁹

Cardiovascular outcomes trials: GLP-1 receptor agonists

ELIXA. The CV safety of GLP-1 receptor agonists has been evaluated in several randomized clinical trials. The Evaluation of Lixisenatide in Acute Coronary Syndrome (ELIXA) trial was the first¹⁴: Lixisenatide was studied in 6068 patients with recent hospitalization for acute coronary syndrome. Lixisenatide therapy was neutral with regard to CV outcomes, which met the primary endpoint: noninferiority to placebo (P < .001). There was no increase in either HF or HHF.

Continue to: LEADER

LEADER. The Liraglutide Effect and Action in Diabetes: Evaluation of Cardiovascular Outcome Results trial (LEADER) evaluated long-term effects of liraglutide, compared to placebo, on CV events in patients with T2D.¹⁵ It was a multicenter, double-blind, placebocontrolled study that followed 9340 participants, most (81%) of whom had established CV disease, over 5 years. LEADER is considered a landmark study because it was the first large CVOT to show significant benefit for a GLP-1 receptor agonist.

Liraglutide demonstrated reductions in first occurrence of death from CV causes, nonfatal MI or nonfatal stroke, overall CV mortality, and all-cause mortality. The composite MACE-3 showed a relative risk reduction (RRR) of 13%, equivalent to an absolute risk reduction (ARR) of 1.9% (noninferiority, P < .001; superiority, P < .01). The RRR was 22% for death from CV causes, with an ARR of 1.3% (P = .007); the RRR for death from any cause was 15%, with an ARR of 1.4% (P = .02).

In addition, there was a lower rate of nephropathy (1.5 events for every 100 patient–years in the liraglutide group [P = .003], compared with 1.9 events every 100 patient–years in the placebo group).¹⁵

Results clearly demonstrated benefit. No significant difference was seen in the liraglutide rate of HHF, compared to the rate in the placebo group.

SUSTAIN-6. Evidence for the CV benefit of GLP-1 receptor agonists was also demonstrated in the phase 3 Trial to Evaluate Cardiovascular and Other Long-term Outcomes With Semaglutide in Subjects With Type 2 Diabetes (SUSTAIN-6).¹⁶ This was a study of 3297 patients with T2D at high risk of CV disease and with a mean hemoglobin A_1c (HbA_1c) value of 8.7%, 83% of whom had established CV disease. Patients were randomized to semaglutide or placebo. Note: SUSTAIN-6 was a noninferiority safety study; as such, it was not actually designed to assess or establish superiority.

Continue to: The incidence of MACE-3...

The incidence of MACE-3 was significantly reduced among patients treated with semaglutide (P = .02) after median followup of 2.1 years. The expanded composite outcome (death from CV causes, nonfatal MI, nonfatal stroke, coronary revascularization, or hospitalization for unstable angina or HF), also showed a significant reduction with semaglutide (P = .002), compared with placebo. There was no difference in the overall hospitalization rate or rate of death from any cause.

EXSCEL. The Exenatide Study of Cardiovascular Event Lowering trial (EXSCEL)^17,18 was a phase III/IV, double-blind, pragmatic placebo-controlled study of 14,752 patients at any level of CV risk, for a median 3.2 years. The study population was intentionally more diverse than in earlier GLP-1 receptor agonist studies. The researchers hypothesized that patients at increased risk of MACE would experience a comparatively greater relative treatment benefit with exenatide than those at lower risk. That did not prove to be the case.

EXSCEL did confirm noninferiority compared with placebo (P < .001), but once-weekly exenatide resulted in a nonsignificant reduction in major adverse CV events, and a trend for RRR in all-cause mortality (RRR = 14%; ARR = 1% [P = .06]).

HARMONY OUTCOMES. The Albiglutide and Cardiovascular Outcomes in Patients With Type 2 Diabetes and Cardiovascular Disease study (HARMONY OUTCOMES)¹⁹ was a double-blind, randomized, placebocontrolled trial conducted at 610 sites across 28 countries. The study investigated albiglutide, 30 to 50 mg once weekly, compared with placebo. It included 9463 patients ages ≥ 40 years with T2D who had an HbA_1c > 7% (median value, 8.7%) and established CV disease. Patients were evaluated for a median 1.6 years.

Albiglutide reduced the risk of CV causes of death, nonfatal MI, and nonfatal stroke by an RRR of 22%, (ARR, 2%) (noninferiority, P < .0001; superiority, P < .0006).

Continue to: REWIND

REWIND. The Researching Cardiovascular Events with a Weekly INcretin in Diabetes trial (REWIND),²⁰ the most recently completed GLP-1 receptor agonist CVOT (presented at the 2019 American Diabetes Association [ADA] Conference in June and published simultaneously in The Lancet), was a multicenter, randomized, double-blind placebo-controlled trial designed to assess the effect of weekly dulaglutide, 1.5 mg, compared with placebo, in 9901 participants enrolled at 371 sites in 24 countries. Mean patient age was 66.2 years, with women constituting 4589 (46.3%) of participants.

REWIND was distinct from other CVOTs in several ways:

• Other CVOTs were designed to show noninferiority compared with placebo regarding CV events; REWIND was designed to establish superiority
• In contrast to trials of other GLP-1 receptor agonists, in which most patients had established CV disease, only 31% of REWIND participants had a history of CV disease or a prior CV event (although 69% did have CV risk factors without underlying disease)
• REWIND was much longer (median follow-up, 5.4 years) than other GLP-1 receptor agonist trials (median follow-up, 1.5 to 3.8 years).

In REWIND, the primary composite outcome of MACE-3 occurred in 12% of participants assigned to dulaglutide, compared with 13.1% assigned to placebo (P = .026). This equated to 2.4 events for every 100 person– years on dulaglutide, compared with 2.7 events for every 100 person–years on placebo. There was a consistent effect on all MACE-3 components, although the greatest reductions were observed in nonfatal stroke (P = .017). Overall risk reduction was the same for primary and secondary prevention cohorts (P = .97), as well as in patients with either an HbA_1c value < 7.2% or ≥ 7.2% (P = .75). Risk reduction was consistent across age, sex, duration of T2D, and body mass index.

Dulaglutide did not significantly affect the incidence of all-cause mortality, heart failure, revascularization, or hospital admission. Forty-seven percent of patients taking dulaglutide reported gastrointestinal adverse effects (P = .0001).

Cases of bullous pemphigoid have been reported after initiation of DPP-4 inhibitor therapy.

In a separate analysis of secondary outcomes, ²¹ dulaglutide reduced the composite renal outcomes of new-onset macroalbuminuria (P = .0001); decline of ≥ 30% in the estimated glomerular filtration rate (P = .066); and chronic renal replacement therapy (P = .39). Investigators estimated that 1 composite renal outcome event would be prevented for every 31 patients treated with dulaglutide for a median 5.4 years.

Continue to: Cardiovascular outcomes trials...

Cardiovascular outcomes trials: SGLT-2 inhibitors

EMPA-REG OUTCOME. The Empagliflozin, Cardiovascular Outcomes, and Mortality in Type 2 Diabetes trial (EMPA-REG OUTCOME) was also a landmark study because it was the first dedicated CVOT to show that an antihyperglycemic agent 1) decreased CV mortality and all-cause mortality, and 2) reduced HHF in patients with T2D and established CV disease.22 In this trial, 7020 patients with T2D who were at high risk of CV events were randomized and treated with empagliflozin, 10 or 25 mg, or placebo, in addition to standard care, and were followed for a median 2.6 years.

In October, the FDA approved dapaglifozin to reduce the risk of hospitalization for heart failure in adults with T2D and established CV disease.

Compared with placebo, empagliflozin resulted in an RRR of 14% (ARR, 1.6%) in the primary endpoint of CV death, nonfatal MI, and stroke, confirming study drug superiority (P = .04). When compared with placebo, the empagliflozin group had an RRR of 38% in CV mortality, (ARR < 2.2%) (P < .001); an RRR of 35% in HHF (ARR, 1.4%) (P = .002); and an RRR of 32% (ARR, 2.6%) in death from any cause (P < .001).

CANVAS. The Canagliflozin Cardiovascular Assessment Study (CANVAS) integrated 2 multicenter, placebo-controlled, randomized trials with 10,142 participants and a mean follow-up of 3.6 years.²³ Patients were randomized to receive canagliflozin (100-300 mg/d) or placebo. Approximately two-thirds of patients had a history of CV disease (therefore representing secondary prevention); one-third had CV risk factors only (primary prevention).

In CANVAS, patients receiving canagliflozin had a risk reduction in MACE-3, establishing superiority compared with placebo (P < .001). There was also a significant reduction in progression of albuminuria (P < .05). Superiority was not shown for the secondary outcome of death from any cause. Canagliflozin had no effect on the primary endpoint (MACE-3) in the subgroup of participants who did not have a history of CV disease. Similar to what was found with empagliflozin in EMPA-REG OUTCOME, CANVAS participants had a reduced risk of HHF.

Continue to: Patients on canagliflozin...

Patients on canagliflozin unexpectedly had an increased incidence of amputations (6.3 participants, compared with 3.4 participants, for every 1000 patient–years). This finding led to a black box warning for canagliflozin about the risk of lower-limb amputation.

DECLARE-TIMI 58. The Dapagliflozin Effect of Cardiovascular Events-Thrombolysis in Myocardial Infarction 58 trial (DECLARETIMI 58) was the largest SGLT-2 inhibitor outcomes trial to date, enrolling 17,160 patients with T2D who also had established CV disease or multiple risk factors for atherosclerotic CV disease. The trial compared dapagliflozin, 10 mg/d, and placebo, following patients for a median 4.2 years.²⁴ Unlike CANVAS and EMPA-REG OUTCOME, DECLARE-TIMI 58 included CV death and HHF as primary outcomes, in addition to MACE-3.

Dapagliflozin was noninferior to placebo with regard to MACE-3. However, its use did result in a lower rate of CV death and HHF by an RRR of 17% (ARR, 1.9%). Risk reduction was greatest in patients with HF who had a reduced ejection fraction (ARR = 9.2%).²⁵

In October, the FDA approved dapagliflozin to reduce the risk of HHF in adults with T2D and established CV disease or multiple CV risk factors. Before initiating the drug, physicians should evaluate the patient's renal function and monitor periodically.

Meta-analyses of SGLT-2 inhibitors

Systematic review. Usman et al released a meta-analysis in 2018 that included 35 randomized, placebo-controlled trials (including EMPA-REG OUTCOME, CANVAS, and DECLARE-TIMI 58) that had assessed the use of SGLT-2 inhibitors in nearly 35,000 patients with T2D.²⁶ This review concluded that, as a class, SGLT-2 inhibitors reduce all-cause mortality, major adverse cardiac events, nonfatal MI, and HF and HHF, compared with placebo.

Continue to: CVD-REAL

CVD-REAL. A separate study, Comparative Effectiveness of Cardiovascular Outcomes in New Users of SGLT-2 Inhibitors (CVD-REAL), of 154,528 patients who were treated with canagliflozin, dapagliflozin, or empagliflozin, showed that initiation of SGLT-2 inhibitors, compared with other glucose- lowering therapies, was associated with a 39% reduction in HHF; a 51% reduction in death from any cause; and a 46% reduction in the composite of HHF or death (P < .001).²⁷

CVD-REAL was unique because it was the largest real-world study to assess the effectiveness of SGLT-2 inhibitors on HHF and mortality. The study utilized data from patients in the United States, Norway, Denmark, Sweden, Germany, and the United Kingdom, based on information obtained from medical claims, primary care and hospital records, and national registries that compared patients who were either newly started on an SGLT-2 inhibitor or another glucose-lowering drug. The drug used by most patients in the trial was canagliflozin (53%), followed by dapagliflozin (42%), and empagliflozin (5%).

In this meta-analysis, similar therapeutic effects were seen across countries, regardless of geographic differences, in the use of specific SGLT-2 inhibitors, suggesting a class effect. Of particular significance was that most (87%) patients enrolled in CVD-REAL did not have prior CV disease. Despite this, results for examined outcomes in CVD-REAL were similar to what was seen in other SGLT-2 inhibitor trials that were designed to study patients with established CV disease.

Risk of adverse effects of newer antidiabetic agents

DPP-4 inhibitors. Alogliptin and sitagliptin carry a black-box warning about potential risk of HF. In SAVOR-TIMI, a 27% increase was detected in the rate of HHF after approximately 2 years of saxagliptin therapy.⁶ Although HF should not be considered a class effect for DPP-4 inhibitors, patients who have risk factors for HF should be monitored for signs and symptoms of HF.

Continue to: Cases of acute pancreatitis...

Cases of acute pancreatitis have been reported in association with all DPP-4 inhibitors available in the United States. A combined analysis of DDP-4 inhibitor trials suggested an increased relative risk of 79% and an absolute risk of 0.13%, which translates to 1 or 2 additional cases of acute pancreatitis for every 1000 patients treated for 2 years.²⁸

There have been numerous postmarketing reports of severe joint pain in patients taking a DPP-4 inhibitor. Most recently, cases of bullous pemphigoid have been reported after initiation of DPP-4 inhibitor therapy.²⁹

GLP-1 receptor agonists carry a black box warning for medullary thyroid (C-cell) tumor risk. GLP-1 receptor agonists are contraindicated in patients with a personal or family history of this cancer, although this FDA warning is based solely on observations from animal models.

In addition, GLP-1 receptor agonists can increase the risk of cholecystitis and pancreatitis. Not uncommonly, they cause gastrointestinal symptoms when first started and when the dosage is titrated upward. Most GLP-1 receptor agonists can be used in patients with renal impairment, although data regarding their use in Stages 4 and 5 chronic kidney disease are limited.³⁰ Semaglutide was found, in the SUSTAIN-6 trial, to be associated with an increased rate of complications of retinopathy, including vitreous hemorrhage and blindness (P = .02)³¹

SGLT-2 inhibitors are associated with an increased incidence of genitourinary infection, bone fracture (canagliflozin), amputation (canagliflozin), and euglycemic diabetic ketoacidosis. Agents in this class should be avoided in patients with moderate or severe renal impairment, primarily due to a lack of efficacy. They are contraindicated in patients with an estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m2. (Dapagliflozin is not recommended when eGFR is < 45 mL/min/ 1.73 m2.) These agents carry an FDA warning about the risk of acute kidney injury.³⁰

Continue to: Summing up

Summing up

All glucose-lowering medications used to treat T2D are not equally effective in reducing CV complications. Recent CVOTs have uncovered evidence that certain antidiabetic agents might confer CV and all-cause mortality benefits (TABLE 2^{6,7,9,11,14-17,19-24}).

Discussion of proposed mechanisms for CV outcome superiority of these agents is beyond the scope of this review. It is generally believed that benefits result from mechanisms other than a reduction in the serum glucose level, given the relatively short time frame of the studies and the magnitude of the CV benefit. It is almost certain that mechanisms of CV benefit in the 2 landmark studies—LEADER and EMPA-REG OUTCOME—are distinct from each other.³²

See “When planning T2D pharmacotherapy, include newer agents that offer CV benefit,” ^33-38 for a stepwise approach to treating T2D, including the role of agents that have efficacy in modifying the risk of CV disease.

ACKNOWLEDGMENTS
Linda Speer, MD, Kevin Phelps, DO, and Jay Shubrook, DO, provided support and editorial assistance.

CORRESPONDENCE
Robert Gotfried, DO, FAAFP, Department of Family Medicine, University of Toledo College of Medicine, 3333 Glendale Avenue, Toledo, OH 43614; [email protected].