Women's Health

Following a recent article in the Guardian, the Internet has erupted with tales of periods gone awry. The stress and loss of normalcy over the last year appears to have altered cycles and amplified the premenstrual syndrome (PMS) symptoms many women experience. And after the piece published, many responded on social media with the same sentiment: “So, it’s not just me?”

Women have experienced the loss of their period, excessive and prolonged bleeding, severe mood swings, and irritability, according to the Guardian article. London-based gynecologist Anita Mitra, MBChB, PhD, took an informal survey and found that 65% of 5,677 respondents had noticed a change in their menstrual cycle, the Guardian reported. Another survey, which was posted on medRxiv but hasn’t been peer reviewed yet, found 53% of the 749 respondents had noticed a change in their menstrual cycle, including increased cycle length.

“The pandemic in itself has made more stress for women,” said Karen Carlson, MD, obstetrician and gynecologist at Nebraska Medicine. There’s preliminary evidence that the cycling progesterone and estrogen experienced by reproductive age women actually offers a protective effect against COVID-19, which is good news. But Dr. Carlson said that because they are less likely than men and the elderly to become seriously ill, many women have taken on a lot of the additional responsibilities brought on by the pandemic. They often juggle homeschooling and elder care in addition to the ubiquitous stressors of isolation and concerns around personal health.

“Abnormal bleeding is the most common reason people present to the gynecologist,” Dr. Carlson said in an interview. But in recent months, Dr. Carlson said she’s seen a slight uptick in these issues, and there might have been even more women presenting to their physicians if the pandemic hadn’t also suppressed access to care.

Stress, or rather the cortisol it causes the body to produce, is the culprit for disrupted cycles. It can suppress pituitary hormones that stimulate ovulation. “Some women don’t feel right because they are stuck in the one phase of the cycle,” Dr. Carlson said. They may go months without a period and when they do eventually shed their uterine lining the bleeding goes on for a while.

Some irregularity in a person’s cycle is a normal response to stress and even likely, given the last year. However, bleeding for more than 2 weeks or irregularity for more than 3 months could point to something more serious like an infection or cancer, Dr. Carlson said. Getting a clear history so you know when you need to do blood and hormone workups is critical.
 

Anxiety and depression amplified

For some women it’s not bleeding that’s a problem, rather their PMS has become crippling. And some of their significant others have noticed drastic changes in their mood. In the Guardian article, one woman said she’d gone from feeling withdrawn during her period to being totally unreachable and experiencing intense anxiety.

Maureen Whelihan, MD, a gynecologist in Palm Beach, Fla., said that, for the majority of her patients under 39 years of age, these feelings aren’t a hormone issue, but a stress and neuroreceptor issue. She says she’s seen approximately a 30% increase in mood disorders since the start of the pandemic. Even though many of her patients are cycling relatively normally, their anxiety and depression have been amplified.

Caroline Gurvich, PhD, a neuroscientist at Monash University in Melbourne, attributes this to the loss of typical coping mechanisms. “Having changes to the support system and routine and things that would keep them mentally healthy can exacerbate PMS,” she said in an interview. Dr. Gurvich’s advice is to build routines into the pandemic lifestyle. Normal wake and sleep times, healthy eating, and practices that bring happiness can be “crucial to keeping those PMS systems as controlled as possible.”

Telehealth has made it much easier to access some patients struggling with PMS and offer them the medication or counseling they need, Dr. Carlson said. But that approach doesn’t work for everyone. “I feel like there are a lot of silent sufferers,” she said.

This is where screening practices like the Patient Health Questionnaire-9 are so critical, according to Dr. Whelihan, who screens every patient as part of their routine iPad check-in process. Even in a normal year, “I think one-third of gynecology is psychiatry,” she said in an interview. She finds many of the patients struggling with excessive PMS symptoms, both during the pandemic and before, benefit from a child-sized dose of antidepressant. This may allow them to get to a place where they can make impactful routine decisions about exercise or sleep, and then taper off the antidepressant.

It may also be important for clinicians to help patients make the initial connection between their worsening mood or cognitive function and their period. Knowing their feelings of stress, irritability, fogginess, or being withdrawn are linked to their hormone cycle and possibly worsened by the stress of the pandemic can be helpful, Dr. Gurvich said. “If they become conscious of how they are feeling it can be helpful for management of these stressful symptoms,” she said.

Following a recent article in the Guardian, the Internet has erupted with tales of periods gone awry. The stress and loss of normalcy over the last year appears to have altered cycles and amplified the premenstrual syndrome (PMS) symptoms many women experience. And after the piece published, many responded on social media with the same sentiment: “So, it’s not just me?”

Women have experienced the loss of their period, excessive and prolonged bleeding, severe mood swings, and irritability, according to the Guardian article. London-based gynecologist Anita Mitra, MBChB, PhD, took an informal survey and found that 65% of 5,677 respondents had noticed a change in their menstrual cycle, the Guardian reported. Another survey, which was posted on medRxiv but hasn’t been peer reviewed yet, found 53% of the 749 respondents had noticed a change in their menstrual cycle, including increased cycle length.

“The pandemic in itself has made more stress for women,” said Karen Carlson, MD, obstetrician and gynecologist at Nebraska Medicine. There’s preliminary evidence that the cycling progesterone and estrogen experienced by reproductive age women actually offers a protective effect against COVID-19, which is good news. But Dr. Carlson said that because they are less likely than men and the elderly to become seriously ill, many women have taken on a lot of the additional responsibilities brought on by the pandemic. They often juggle homeschooling and elder care in addition to the ubiquitous stressors of isolation and concerns around personal health.

“Abnormal bleeding is the most common reason people present to the gynecologist,” Dr. Carlson said in an interview. But in recent months, Dr. Carlson said she’s seen a slight uptick in these issues, and there might have been even more women presenting to their physicians if the pandemic hadn’t also suppressed access to care.

Stress, or rather the cortisol it causes the body to produce, is the culprit for disrupted cycles. It can suppress pituitary hormones that stimulate ovulation. “Some women don’t feel right because they are stuck in the one phase of the cycle,” Dr. Carlson said. They may go months without a period and when they do eventually shed their uterine lining the bleeding goes on for a while.

Some irregularity in a person’s cycle is a normal response to stress and even likely, given the last year. However, bleeding for more than 2 weeks or irregularity for more than 3 months could point to something more serious like an infection or cancer, Dr. Carlson said. Getting a clear history so you know when you need to do blood and hormone workups is critical.
 

Anxiety and depression amplified

For some women it’s not bleeding that’s a problem, rather their PMS has become crippling. And some of their significant others have noticed drastic changes in their mood. In the Guardian article, one woman said she’d gone from feeling withdrawn during her period to being totally unreachable and experiencing intense anxiety.

Maureen Whelihan, MD, a gynecologist in Palm Beach, Fla., said that, for the majority of her patients under 39 years of age, these feelings aren’t a hormone issue, but a stress and neuroreceptor issue. She says she’s seen approximately a 30% increase in mood disorders since the start of the pandemic. Even though many of her patients are cycling relatively normally, their anxiety and depression have been amplified.

Caroline Gurvich, PhD, a neuroscientist at Monash University in Melbourne, attributes this to the loss of typical coping mechanisms. “Having changes to the support system and routine and things that would keep them mentally healthy can exacerbate PMS,” she said in an interview. Dr. Gurvich’s advice is to build routines into the pandemic lifestyle. Normal wake and sleep times, healthy eating, and practices that bring happiness can be “crucial to keeping those PMS systems as controlled as possible.”

Telehealth has made it much easier to access some patients struggling with PMS and offer them the medication or counseling they need, Dr. Carlson said. But that approach doesn’t work for everyone. “I feel like there are a lot of silent sufferers,” she said.

This is where screening practices like the Patient Health Questionnaire-9 are so critical, according to Dr. Whelihan, who screens every patient as part of their routine iPad check-in process. Even in a normal year, “I think one-third of gynecology is psychiatry,” she said in an interview. She finds many of the patients struggling with excessive PMS symptoms, both during the pandemic and before, benefit from a child-sized dose of antidepressant. This may allow them to get to a place where they can make impactful routine decisions about exercise or sleep, and then taper off the antidepressant.

It may also be important for clinicians to help patients make the initial connection between their worsening mood or cognitive function and their period. Knowing their feelings of stress, irritability, fogginess, or being withdrawn are linked to their hormone cycle and possibly worsened by the stress of the pandemic can be helpful, Dr. Gurvich said. “If they become conscious of how they are feeling it can be helpful for management of these stressful symptoms,” she said.

Following a recent article in the Guardian, the Internet has erupted with tales of periods gone awry. The stress and loss of normalcy over the last year appears to have altered cycles and amplified the premenstrual syndrome (PMS) symptoms many women experience. And after the piece published, many responded on social media with the same sentiment: “So, it’s not just me?”

Women have experienced the loss of their period, excessive and prolonged bleeding, severe mood swings, and irritability, according to the Guardian article. London-based gynecologist Anita Mitra, MBChB, PhD, took an informal survey and found that 65% of 5,677 respondents had noticed a change in their menstrual cycle, the Guardian reported. Another survey, which was posted on medRxiv but hasn’t been peer reviewed yet, found 53% of the 749 respondents had noticed a change in their menstrual cycle, including increased cycle length.

“The pandemic in itself has made more stress for women,” said Karen Carlson, MD, obstetrician and gynecologist at Nebraska Medicine. There’s preliminary evidence that the cycling progesterone and estrogen experienced by reproductive age women actually offers a protective effect against COVID-19, which is good news. But Dr. Carlson said that because they are less likely than men and the elderly to become seriously ill, many women have taken on a lot of the additional responsibilities brought on by the pandemic. They often juggle homeschooling and elder care in addition to the ubiquitous stressors of isolation and concerns around personal health.

“Abnormal bleeding is the most common reason people present to the gynecologist,” Dr. Carlson said in an interview. But in recent months, Dr. Carlson said she’s seen a slight uptick in these issues, and there might have been even more women presenting to their physicians if the pandemic hadn’t also suppressed access to care.

Stress, or rather the cortisol it causes the body to produce, is the culprit for disrupted cycles. It can suppress pituitary hormones that stimulate ovulation. “Some women don’t feel right because they are stuck in the one phase of the cycle,” Dr. Carlson said. They may go months without a period and when they do eventually shed their uterine lining the bleeding goes on for a while.

Some irregularity in a person’s cycle is a normal response to stress and even likely, given the last year. However, bleeding for more than 2 weeks or irregularity for more than 3 months could point to something more serious like an infection or cancer, Dr. Carlson said. Getting a clear history so you know when you need to do blood and hormone workups is critical.
 

Anxiety and depression amplified

For some women it’s not bleeding that’s a problem, rather their PMS has become crippling. And some of their significant others have noticed drastic changes in their mood. In the Guardian article, one woman said she’d gone from feeling withdrawn during her period to being totally unreachable and experiencing intense anxiety.

Maureen Whelihan, MD, a gynecologist in Palm Beach, Fla., said that, for the majority of her patients under 39 years of age, these feelings aren’t a hormone issue, but a stress and neuroreceptor issue. She says she’s seen approximately a 30% increase in mood disorders since the start of the pandemic. Even though many of her patients are cycling relatively normally, their anxiety and depression have been amplified.

Caroline Gurvich, PhD, a neuroscientist at Monash University in Melbourne, attributes this to the loss of typical coping mechanisms. “Having changes to the support system and routine and things that would keep them mentally healthy can exacerbate PMS,” she said in an interview. Dr. Gurvich’s advice is to build routines into the pandemic lifestyle. Normal wake and sleep times, healthy eating, and practices that bring happiness can be “crucial to keeping those PMS systems as controlled as possible.”

Telehealth has made it much easier to access some patients struggling with PMS and offer them the medication or counseling they need, Dr. Carlson said. But that approach doesn’t work for everyone. “I feel like there are a lot of silent sufferers,” she said.

This is where screening practices like the Patient Health Questionnaire-9 are so critical, according to Dr. Whelihan, who screens every patient as part of their routine iPad check-in process. Even in a normal year, “I think one-third of gynecology is psychiatry,” she said in an interview. She finds many of the patients struggling with excessive PMS symptoms, both during the pandemic and before, benefit from a child-sized dose of antidepressant. This may allow them to get to a place where they can make impactful routine decisions about exercise or sleep, and then taper off the antidepressant.

It may also be important for clinicians to help patients make the initial connection between their worsening mood or cognitive function and their period. Knowing their feelings of stress, irritability, fogginess, or being withdrawn are linked to their hormone cycle and possibly worsened by the stress of the pandemic can be helpful, Dr. Gurvich said. “If they become conscious of how they are feeling it can be helpful for management of these stressful symptoms,” she said.

Six pregnancy-related complications increase a woman’s risk of developing risk factors for cardiovascular disease (CVD) and subsequently developing CVD, the American Heart Association says in a new scientific statement.

They are hypertensive disorders of pregnancy, preterm delivery, gestational diabetes, small-for-gestational-age (SGA) delivery, placental abruption (abruptio placentae), and pregnancy loss.

A history of any of these adverse pregnancy outcomes should prompt “more vigorous primordial prevention of CVD risk factors and primary prevention of CVD,” the writing group says.

“Adverse pregnancy outcomes are linked to women having hypertension, diabetes, abnormal cholesterol, and cardiovascular disease events, including heart attack and stroke, long after their pregnancies,” Nisha I. Parikh, MD, MPH, chair of the writing group, said in a news release.

Adverse pregnancy outcomes can be a “powerful window” into CVD prevention “if women and their health care professionals harness the knowledge and use it for health improvement,” said Dr. Parikh, associate professor of medicine in the cardiovascular division at the University of California, San Francisco.

The statement was published online March 29 in Circulation.

For the scientific statement, the writing group reviewed the latest scientific literature on adverse pregnancy outcomes and CVD risk. 

The evidence in the literature linking adverse pregnancy outcomes to later CVD is “consistent over many years and confirmed in nearly every study we examined,” Dr. Parikh said. Among their key findings:

• Gestational hypertension is associated with an increased risk of CVD later in life by 67% and the odds of stroke by 83%. Moderate and severe  is associated with a more than twofold increase in the risk for CVD.
• Gestational diabetes is associated with an increase in the risk for CVD by 68% and the risk of developing  after pregnancy by 10-fold.
• Preterm delivery (before 37 weeks) is associated with double the risk of developing CVD and is strongly associated with later heart disease, stroke, and CVD.
• Placental abruption is associated with an 82% increased risk for CVD.
• Stillbirth is associated with about double the risk for CVD.

“This statement should inform future prevention guidelines in terms of the important factors to consider for determining women’s risk for heart diseases and stroke,” Dr. Parikh added.

The statement emphasizes the importance of recognizing these adverse pregnancy outcomes when evaluating CVD risk in women but notes that their value in reclassifying CVD risk may not be established.

It highlights the importance of adopting a heart-healthy diet and increasing physical activity among women with any of these pregnancy-related complications, starting right after childbirth and continuing across the life span to decrease CVD risk.

Lactation and breastfeeding may lower a woman’s later cardiometabolic risk, the writing group notes.
 

‘Golden year of opportunity’

The statement highlights several opportunities to improve transition of care for women with adverse pregnancy outcomes and to implement strategies to reduce their long-term CVD risk.

One strategy is longer postpartum follow-up care, sometimes referred to as the “fourth trimester,” to screen for CVD risk factors and provide CVD prevention counseling.

Another strategy involves improving the transfer of health information between ob/gyns and primary care physicians to eliminate inconsistencies in electronic health record documentation, which should improve patient care.

A third strategy is obtaining a short and targeted health history for each woman to confirm if she has any of the six pregnancy-related complications.

“If a woman has had any of these adverse pregnancy outcomes, consider close blood pressure monitoring, type 2 diabetes and lipid screening, and more aggressive risk factor modification and CVD prevention recommendations,” Dr. Parikh advised.

“Our data [lend] support to the prior AHA recommendation that these important adverse pregnancy outcomes should be ‘risk enhancers’ to guide consideration for statin therapy aimed at CVD prevention in women,” Dr. Parikh added.

In a commentary in Circulation, Eliza C. Miller, MD, assistant professor of neurology at Columbia University, New York, notes that pregnancy and the postpartum period are a critical time window in a woman’s life to identify CVD risk and improve a woman’s health trajectory.

“The so-called ‘Golden Hour’ for conditions such as sepsis and acute stroke refers to a critical time window for early recognition and treatment, when we can change a patient’s clinical trajectory and prevent severe morbidity and mortality,” writes Dr. Miller.

“Pregnancy and the postpartum period can be considered a ‘Golden Year’ in a woman’s life, offering a rare opportunity for clinicians to identify young women at risk and work with them to improve their cardiovascular health trajectories,” she notes.

This scientific statement was prepared by the volunteer writing group on behalf of the AHA Council on Epidemiology and Prevention; the Council on Arteriosclerosis, Thrombosis and Vascular Biology; the Council on Cardiovascular and Stroke Nursing; and the Stroke Council.

The authors of the scientific statement have disclosed no relevant financial relationships. Dr. Miller received personal compensation from Finch McCranie and Argionis & Associates for expert testimony regarding maternal stroke; and personal compensation from Elsevier for editorial work on Handbook of Clinical Neurology, Vol. 171 and 172 (Neurology of Pregnancy).

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

Six pregnancy-related complications increase a woman’s risk of developing risk factors for cardiovascular disease (CVD) and subsequently developing CVD, the American Heart Association says in a new scientific statement.

They are hypertensive disorders of pregnancy, preterm delivery, gestational diabetes, small-for-gestational-age (SGA) delivery, placental abruption (abruptio placentae), and pregnancy loss.

A history of any of these adverse pregnancy outcomes should prompt “more vigorous primordial prevention of CVD risk factors and primary prevention of CVD,” the writing group says.

“Adverse pregnancy outcomes are linked to women having hypertension, diabetes, abnormal cholesterol, and cardiovascular disease events, including heart attack and stroke, long after their pregnancies,” Nisha I. Parikh, MD, MPH, chair of the writing group, said in a news release.

Adverse pregnancy outcomes can be a “powerful window” into CVD prevention “if women and their health care professionals harness the knowledge and use it for health improvement,” said Dr. Parikh, associate professor of medicine in the cardiovascular division at the University of California, San Francisco.

The statement was published online March 29 in Circulation.

For the scientific statement, the writing group reviewed the latest scientific literature on adverse pregnancy outcomes and CVD risk. 

The evidence in the literature linking adverse pregnancy outcomes to later CVD is “consistent over many years and confirmed in nearly every study we examined,” Dr. Parikh said. Among their key findings:

• Gestational hypertension is associated with an increased risk of CVD later in life by 67% and the odds of stroke by 83%. Moderate and severe  is associated with a more than twofold increase in the risk for CVD.
• Gestational diabetes is associated with an increase in the risk for CVD by 68% and the risk of developing  after pregnancy by 10-fold.
• Preterm delivery (before 37 weeks) is associated with double the risk of developing CVD and is strongly associated with later heart disease, stroke, and CVD.
• Placental abruption is associated with an 82% increased risk for CVD.
• Stillbirth is associated with about double the risk for CVD.

“This statement should inform future prevention guidelines in terms of the important factors to consider for determining women’s risk for heart diseases and stroke,” Dr. Parikh added.

The statement emphasizes the importance of recognizing these adverse pregnancy outcomes when evaluating CVD risk in women but notes that their value in reclassifying CVD risk may not be established.

It highlights the importance of adopting a heart-healthy diet and increasing physical activity among women with any of these pregnancy-related complications, starting right after childbirth and continuing across the life span to decrease CVD risk.

Lactation and breastfeeding may lower a woman’s later cardiometabolic risk, the writing group notes.
 

‘Golden year of opportunity’

The statement highlights several opportunities to improve transition of care for women with adverse pregnancy outcomes and to implement strategies to reduce their long-term CVD risk.

One strategy is longer postpartum follow-up care, sometimes referred to as the “fourth trimester,” to screen for CVD risk factors and provide CVD prevention counseling.

Another strategy involves improving the transfer of health information between ob/gyns and primary care physicians to eliminate inconsistencies in electronic health record documentation, which should improve patient care.

A third strategy is obtaining a short and targeted health history for each woman to confirm if she has any of the six pregnancy-related complications.

“If a woman has had any of these adverse pregnancy outcomes, consider close blood pressure monitoring, type 2 diabetes and lipid screening, and more aggressive risk factor modification and CVD prevention recommendations,” Dr. Parikh advised.

“Our data [lend] support to the prior AHA recommendation that these important adverse pregnancy outcomes should be ‘risk enhancers’ to guide consideration for statin therapy aimed at CVD prevention in women,” Dr. Parikh added.

In a commentary in Circulation, Eliza C. Miller, MD, assistant professor of neurology at Columbia University, New York, notes that pregnancy and the postpartum period are a critical time window in a woman’s life to identify CVD risk and improve a woman’s health trajectory.

“The so-called ‘Golden Hour’ for conditions such as sepsis and acute stroke refers to a critical time window for early recognition and treatment, when we can change a patient’s clinical trajectory and prevent severe morbidity and mortality,” writes Dr. Miller.

“Pregnancy and the postpartum period can be considered a ‘Golden Year’ in a woman’s life, offering a rare opportunity for clinicians to identify young women at risk and work with them to improve their cardiovascular health trajectories,” she notes.

This scientific statement was prepared by the volunteer writing group on behalf of the AHA Council on Epidemiology and Prevention; the Council on Arteriosclerosis, Thrombosis and Vascular Biology; the Council on Cardiovascular and Stroke Nursing; and the Stroke Council.

The authors of the scientific statement have disclosed no relevant financial relationships. Dr. Miller received personal compensation from Finch McCranie and Argionis & Associates for expert testimony regarding maternal stroke; and personal compensation from Elsevier for editorial work on Handbook of Clinical Neurology, Vol. 171 and 172 (Neurology of Pregnancy).

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

Six pregnancy-related complications increase a woman’s risk of developing risk factors for cardiovascular disease (CVD) and subsequently developing CVD, the American Heart Association says in a new scientific statement.

They are hypertensive disorders of pregnancy, preterm delivery, gestational diabetes, small-for-gestational-age (SGA) delivery, placental abruption (abruptio placentae), and pregnancy loss.

A history of any of these adverse pregnancy outcomes should prompt “more vigorous primordial prevention of CVD risk factors and primary prevention of CVD,” the writing group says.

“Adverse pregnancy outcomes are linked to women having hypertension, diabetes, abnormal cholesterol, and cardiovascular disease events, including heart attack and stroke, long after their pregnancies,” Nisha I. Parikh, MD, MPH, chair of the writing group, said in a news release.

Adverse pregnancy outcomes can be a “powerful window” into CVD prevention “if women and their health care professionals harness the knowledge and use it for health improvement,” said Dr. Parikh, associate professor of medicine in the cardiovascular division at the University of California, San Francisco.

The statement was published online March 29 in Circulation.

For the scientific statement, the writing group reviewed the latest scientific literature on adverse pregnancy outcomes and CVD risk. 

The evidence in the literature linking adverse pregnancy outcomes to later CVD is “consistent over many years and confirmed in nearly every study we examined,” Dr. Parikh said. Among their key findings:

• Gestational hypertension is associated with an increased risk of CVD later in life by 67% and the odds of stroke by 83%. Moderate and severe  is associated with a more than twofold increase in the risk for CVD.
• Gestational diabetes is associated with an increase in the risk for CVD by 68% and the risk of developing  after pregnancy by 10-fold.
• Preterm delivery (before 37 weeks) is associated with double the risk of developing CVD and is strongly associated with later heart disease, stroke, and CVD.
• Placental abruption is associated with an 82% increased risk for CVD.
• Stillbirth is associated with about double the risk for CVD.

“This statement should inform future prevention guidelines in terms of the important factors to consider for determining women’s risk for heart diseases and stroke,” Dr. Parikh added.

The statement emphasizes the importance of recognizing these adverse pregnancy outcomes when evaluating CVD risk in women but notes that their value in reclassifying CVD risk may not be established.

It highlights the importance of adopting a heart-healthy diet and increasing physical activity among women with any of these pregnancy-related complications, starting right after childbirth and continuing across the life span to decrease CVD risk.

Lactation and breastfeeding may lower a woman’s later cardiometabolic risk, the writing group notes.
 

‘Golden year of opportunity’

The statement highlights several opportunities to improve transition of care for women with adverse pregnancy outcomes and to implement strategies to reduce their long-term CVD risk.

One strategy is longer postpartum follow-up care, sometimes referred to as the “fourth trimester,” to screen for CVD risk factors and provide CVD prevention counseling.

Another strategy involves improving the transfer of health information between ob/gyns and primary care physicians to eliminate inconsistencies in electronic health record documentation, which should improve patient care.

A third strategy is obtaining a short and targeted health history for each woman to confirm if she has any of the six pregnancy-related complications.

“If a woman has had any of these adverse pregnancy outcomes, consider close blood pressure monitoring, type 2 diabetes and lipid screening, and more aggressive risk factor modification and CVD prevention recommendations,” Dr. Parikh advised.

“Our data [lend] support to the prior AHA recommendation that these important adverse pregnancy outcomes should be ‘risk enhancers’ to guide consideration for statin therapy aimed at CVD prevention in women,” Dr. Parikh added.

In a commentary in Circulation, Eliza C. Miller, MD, assistant professor of neurology at Columbia University, New York, notes that pregnancy and the postpartum period are a critical time window in a woman’s life to identify CVD risk and improve a woman’s health trajectory.

“The so-called ‘Golden Hour’ for conditions such as sepsis and acute stroke refers to a critical time window for early recognition and treatment, when we can change a patient’s clinical trajectory and prevent severe morbidity and mortality,” writes Dr. Miller.

“Pregnancy and the postpartum period can be considered a ‘Golden Year’ in a woman’s life, offering a rare opportunity for clinicians to identify young women at risk and work with them to improve their cardiovascular health trajectories,” she notes.

This scientific statement was prepared by the volunteer writing group on behalf of the AHA Council on Epidemiology and Prevention; the Council on Arteriosclerosis, Thrombosis and Vascular Biology; the Council on Cardiovascular and Stroke Nursing; and the Stroke Council.

The authors of the scientific statement have disclosed no relevant financial relationships. Dr. Miller received personal compensation from Finch McCranie and Argionis & Associates for expert testimony regarding maternal stroke; and personal compensation from Elsevier for editorial work on Handbook of Clinical Neurology, Vol. 171 and 172 (Neurology of Pregnancy).

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

Endometrial cancer patients should be screened for frailty before hysterectomies, and frail patients should be counseled thoroughly about their increased risk for poor outcomes, according to a review of 144,809 cases in the Nationwide Readmissions Database.

©Wavebreakmedia Ltd/thinkstockphotos.com

Overall, 1.8% of the women were frail according to the Johns Hopkins Adjusted Clinical Groups (ACG) frailty indicator, which characterizes patients as frail or not based on diagnostic codes in a range of areas, including abnormal weight loss, dementia, urinary or fecal incontinence, difficulty walking, inadequate social support, and other matters.

Frailty was associated with an almost fourfold increased risk of intensive care after surgery; a more than twofold risk of inpatient mortality, and a 59% increased risk of something other than routine discharge to home. Frail patients were 33% more likely to be readmitted within 30 days and 21% more likely to be readmitted within 90 days, and they had a higher risk of dying on readmission. Hospital costs and lengths of stay were higher for frail women, according to the report, which was published online in Gynecologic Oncology.

The findings were adjusted for patient, hospital, and clinical factors, and the readmission outcomes were unchanged when limited to patients who had minimally invasive surgery.

Frailty is a well-known risk factor for poor surgical outcomes, so it “comes as little surprise” that it was associated with worse outcomes in hysterectomies for endometrial cancer. Even so, “frailty is oftentimes not screened for in oncology clinics” leading to “a large number of potentially unrecognized frail patients who are recommended to undergo surgery,” said investigators led by Tiffany Sia, MD, an obstetrics and gynecology resident at Columbia University, New York.

“We believe that each potential patient’s frailty status should be assessed during the preoperative period ... frail patients should be counseled regarding these risks in the perioperative setting,” Dr. Sia said in an interview.

“Researchers and clinicians have adopted the scoring instrument that corresponds best with the data they have available,” but “lack of a widely recognized gold standard or easily utilized diagnostic tool makes frailty rather difficult to formally assess in a clinical setting,” she said.

The investigators found a “surprisingly high rate” of frail patients (82%) who underwent total abdominal hysterectomies compared to less invasive options, with 16.5% undergoing extended procedures. The reason is unknown because stage, tumor grade, and histology – factors that likely influenced decision making – were not captured in the analysis.

However, almost half of the frail subjects were 70 years or older, and increasing age is associated with more aggressive tumor characteristics and worse prognosis.

The team said future research should integrate screening instruments into routine clinic workflow, but there have been a number of roadblocks. Current screening instruments are “cumbersome to use and difficult to implement ... as they typically require measurement of a frailty phenotype such as a timed up-and-go test or grip strength and require numerous patient surveys,” they added.

Proposed screening tools include the Frailty Index, Memorial Sloan Kettering–Frailty Index, Hopkins’ frailty indicator, and the Vulnerable Elders Survey, but no preferred method has emerged, and each scale captures different subpopulations of frailty and differs in its prognostic ability.

There was no external funding, and Dr. Sia didn’t have any disclosures.

[email protected]

Endometrial cancer patients should be screened for frailty before hysterectomies, and frail patients should be counseled thoroughly about their increased risk for poor outcomes, according to a review of 144,809 cases in the Nationwide Readmissions Database.

©Wavebreakmedia Ltd/thinkstockphotos.com

Overall, 1.8% of the women were frail according to the Johns Hopkins Adjusted Clinical Groups (ACG) frailty indicator, which characterizes patients as frail or not based on diagnostic codes in a range of areas, including abnormal weight loss, dementia, urinary or fecal incontinence, difficulty walking, inadequate social support, and other matters.

Frailty was associated with an almost fourfold increased risk of intensive care after surgery; a more than twofold risk of inpatient mortality, and a 59% increased risk of something other than routine discharge to home. Frail patients were 33% more likely to be readmitted within 30 days and 21% more likely to be readmitted within 90 days, and they had a higher risk of dying on readmission. Hospital costs and lengths of stay were higher for frail women, according to the report, which was published online in Gynecologic Oncology.

The findings were adjusted for patient, hospital, and clinical factors, and the readmission outcomes were unchanged when limited to patients who had minimally invasive surgery.

Frailty is a well-known risk factor for poor surgical outcomes, so it “comes as little surprise” that it was associated with worse outcomes in hysterectomies for endometrial cancer. Even so, “frailty is oftentimes not screened for in oncology clinics” leading to “a large number of potentially unrecognized frail patients who are recommended to undergo surgery,” said investigators led by Tiffany Sia, MD, an obstetrics and gynecology resident at Columbia University, New York.

“We believe that each potential patient’s frailty status should be assessed during the preoperative period ... frail patients should be counseled regarding these risks in the perioperative setting,” Dr. Sia said in an interview.

“Researchers and clinicians have adopted the scoring instrument that corresponds best with the data they have available,” but “lack of a widely recognized gold standard or easily utilized diagnostic tool makes frailty rather difficult to formally assess in a clinical setting,” she said.

The investigators found a “surprisingly high rate” of frail patients (82%) who underwent total abdominal hysterectomies compared to less invasive options, with 16.5% undergoing extended procedures. The reason is unknown because stage, tumor grade, and histology – factors that likely influenced decision making – were not captured in the analysis.

However, almost half of the frail subjects were 70 years or older, and increasing age is associated with more aggressive tumor characteristics and worse prognosis.

The team said future research should integrate screening instruments into routine clinic workflow, but there have been a number of roadblocks. Current screening instruments are “cumbersome to use and difficult to implement ... as they typically require measurement of a frailty phenotype such as a timed up-and-go test or grip strength and require numerous patient surveys,” they added.

Proposed screening tools include the Frailty Index, Memorial Sloan Kettering–Frailty Index, Hopkins’ frailty indicator, and the Vulnerable Elders Survey, but no preferred method has emerged, and each scale captures different subpopulations of frailty and differs in its prognostic ability.

There was no external funding, and Dr. Sia didn’t have any disclosures.

[email protected]

Endometrial cancer patients should be screened for frailty before hysterectomies, and frail patients should be counseled thoroughly about their increased risk for poor outcomes, according to a review of 144,809 cases in the Nationwide Readmissions Database.

©Wavebreakmedia Ltd/thinkstockphotos.com

Overall, 1.8% of the women were frail according to the Johns Hopkins Adjusted Clinical Groups (ACG) frailty indicator, which characterizes patients as frail or not based on diagnostic codes in a range of areas, including abnormal weight loss, dementia, urinary or fecal incontinence, difficulty walking, inadequate social support, and other matters.

Frailty was associated with an almost fourfold increased risk of intensive care after surgery; a more than twofold risk of inpatient mortality, and a 59% increased risk of something other than routine discharge to home. Frail patients were 33% more likely to be readmitted within 30 days and 21% more likely to be readmitted within 90 days, and they had a higher risk of dying on readmission. Hospital costs and lengths of stay were higher for frail women, according to the report, which was published online in Gynecologic Oncology.

The findings were adjusted for patient, hospital, and clinical factors, and the readmission outcomes were unchanged when limited to patients who had minimally invasive surgery.

Frailty is a well-known risk factor for poor surgical outcomes, so it “comes as little surprise” that it was associated with worse outcomes in hysterectomies for endometrial cancer. Even so, “frailty is oftentimes not screened for in oncology clinics” leading to “a large number of potentially unrecognized frail patients who are recommended to undergo surgery,” said investigators led by Tiffany Sia, MD, an obstetrics and gynecology resident at Columbia University, New York.

“We believe that each potential patient’s frailty status should be assessed during the preoperative period ... frail patients should be counseled regarding these risks in the perioperative setting,” Dr. Sia said in an interview.

“Researchers and clinicians have adopted the scoring instrument that corresponds best with the data they have available,” but “lack of a widely recognized gold standard or easily utilized diagnostic tool makes frailty rather difficult to formally assess in a clinical setting,” she said.

The investigators found a “surprisingly high rate” of frail patients (82%) who underwent total abdominal hysterectomies compared to less invasive options, with 16.5% undergoing extended procedures. The reason is unknown because stage, tumor grade, and histology – factors that likely influenced decision making – were not captured in the analysis.

However, almost half of the frail subjects were 70 years or older, and increasing age is associated with more aggressive tumor characteristics and worse prognosis.

The team said future research should integrate screening instruments into routine clinic workflow, but there have been a number of roadblocks. Current screening instruments are “cumbersome to use and difficult to implement ... as they typically require measurement of a frailty phenotype such as a timed up-and-go test or grip strength and require numerous patient surveys,” they added.

Proposed screening tools include the Frailty Index, Memorial Sloan Kettering–Frailty Index, Hopkins’ frailty indicator, and the Vulnerable Elders Survey, but no preferred method has emerged, and each scale captures different subpopulations of frailty and differs in its prognostic ability.

There was no external funding, and Dr. Sia didn’t have any disclosures.

[email protected]

A novel risk-based approach could be an effective way to triage women for mammography during times of limited capacity, such as the situation during the COVID-19 pandemic, according to new findings.

Researchers evaluated almost 2 million mammograms that had been performed at more than 90 radiology centers and found that 12% of mammograms with “high” and “very high” cancer risk rates accounted for 55% of detected cancers.

In contrast, 44% of mammograms with very low cancer risk rates accounted for 13% of detected cancers. The study was published online March 25, 2021, in JAMA Network Open.

Cancer screening programs dramatically slowed or even came to a screeching halt during 2020, when restrictions and lockdowns were in place. The American Cancer Society even recommended that “no one should go to a health care facility for routine cancer screening,” as part of COVID-19 precautions.

However, concern was voiced that the pause in screening would allow patients with asymptomatic cancers or precursor lesions to develop into a more serious disease state.

The authors pointed out that several professional associations had posted guidance for scheduling individuals for breast imaging services during the COVID-19 pandemic, but these recommendations were based on expert opinion. The investigators’ goal was to help imaging facilities optimize the number of breast cancers that could be detected during periods of reduced capacity using clinical indication and individual characteristics.

The result was a risk-based strategy for triaging mammograms during periods of decreased capacity, which lead author Diana L. Miglioretti, PhD, explained was feasible to implement. Dr. Miglioretti is division chief of biostatistics in the department of public health sciences at University of California, Davis.

“Our risk model used information that is commonly collected by radiology facilities,” she said in an interview. “Vendors of electronic medical records could create tools that pull the information from the medical record, or could create fields in the scheduling system to efficiently collect this information when the mammogram is scheduled.”

Dr. Miglioretti emphasized that, once the information is collected in a standardized manner, “it would be straightforward to use a computer program to apply our algorithm to rank women based on their likelihood of having a breast cancer detected.”

“I think it is worth the investment to create these electronic tools now, given the potential for future shutdowns or periods of reduced capacity due to a variety of reasons, such as natural disasters and cyberattacks – or another pandemic,” she said.

Some facilities are still working through backlogs of mammograms that need to be rescheduled, which would be another way that this algorithm could be used. “They could use this approach to determine who should be scheduled first by using data available in the electronic medical record,” she added.
 

Five risk groups

Dr. Miglioretti and colleagues conducted a cohort study using data that was prospectively collected from mammography examinations performed from 2014 to 2019 at 92 radiology facilities in the Breast Cancer Surveillance Consortium. The cohort included 898,415 individuals who contributed to 1.8 million mammograms.

Information that included clinical indication for screening, breast symptoms, personal history of breast cancer, age, time since last mammogram/screening interval, family history of breast cancer, breast density, and history of high-risk breast lesion was collected from self-administered questionnaires at the time of mammography or extracted from electronic health records.

Following analysis, the data was categorized into five risk groups: very high (>50), high (22-50), moderate (10-22), low (5-10), and very low (<5) cancer detection rate per 1,000 mammograms. These thresholds were chosen based on the observed cancer detection rates and clinical expertise.

Of the group, about 1.7 million mammograms were from women without a personal history of breast cancer and 156,104 mammograms were from women with a breast cancer history. Most of the cohort were aged 50-69 years at the time of imaging, and 67.9% were White (11.2% Black, 11.3% Asian or Pacific Islander, 7% Hispanic, and 2.2% were another race/ethnicity or mixed race/ethnicity).

Their results showed that 12% of mammograms with very high (89.6-122.3 cancers detected per 1,000 mammograms) or high (36.1-47.5 cancers detected per 1,000 mammograms) cancer detection rates accounted for 55% of all detected cancers. These included mammograms that were done to evaluate an abnormal test or breast lump in individuals of all ages regardless of breast cancer history.

On the opposite end, 44.2% of mammograms with very low cancer detection rates accounted for 13.1% of detected cancers and that included annual screening tests in women aged 50-69 years (3.8 cancers detected per 1,000 mammograms) and all screening mammograms in individuals younger than 50 years regardless of screening interval (2.8 cancers detected per 1000 mammograms).
 

Treat with caution

In an accompanying editorial, Sarah M. Friedewald, MD, and Dipti Gupta, MD, both from Northwestern University, Chicago, pointed out that, while the authors examined a large dataset to identify a subgroup of patients who would most likely benefit from breast imaging in a setting where capacity is limited, “these data should be used with caution as the only barometer for whether a patient merits cancer screening during a period of rationing.”

They noted that, in the context of an acute crisis, when patient volume needs to be reduced very quickly, it is often impractical for clinicians to sift through patient records in order to capture the information necessary for triage. In addition, asking nonclinical schedulers to accurately pull data at this level, at the time when the patient calls to make an appointment, is unrealistic.

In the context of the pandemic, the editorialists wrote that, while this model uses risk for breast cancer to prioritize those to be seen in the clinic, the risk for complications from COVID-19 may also be an important factor to consider. For example, an older patient may be at a higher risk for breast cancer but may also face a higher risk for COVID-related complications. Conversely, a younger woman at a lower risk for serious COVID-related disease but who has breast cancer detected early will gain more life-years than an older patient.

There are also no algorithms to account for each patient’s perceived risk for breast cancer or COVID-19, and “the downstream effect of delaying cancer diagnosis may similarly lead to unintended consequences but may take longer to become apparent,” they wrote. “Focusing efforts on the operations of accommodating as many patients as possible, such as extending clinic hours, would be preferable.”

Finally, Dr. Friedewald and Dr. Gupta concluded that “the practicality of this process during the COVID-19 pandemic and extrapolation to other emergent settings are less obvious.”

The study was supported through a Patient-centered Outcomes Research Institute program award. Dr. Miglioretti reported receiving royalties from Elsevier outside the submitted work. Several coauthors report relationships with industry. Dr. Friedewald reported receiving grants from Hologic Research during the conduct of the study. Dr. Gupta disclosed no relevant financial relationships.

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

A novel risk-based approach could be an effective way to triage women for mammography during times of limited capacity, such as the situation during the COVID-19 pandemic, according to new findings.

Researchers evaluated almost 2 million mammograms that had been performed at more than 90 radiology centers and found that 12% of mammograms with “high” and “very high” cancer risk rates accounted for 55% of detected cancers.

In contrast, 44% of mammograms with very low cancer risk rates accounted for 13% of detected cancers. The study was published online March 25, 2021, in JAMA Network Open.

Cancer screening programs dramatically slowed or even came to a screeching halt during 2020, when restrictions and lockdowns were in place. The American Cancer Society even recommended that “no one should go to a health care facility for routine cancer screening,” as part of COVID-19 precautions.

However, concern was voiced that the pause in screening would allow patients with asymptomatic cancers or precursor lesions to develop into a more serious disease state.

The authors pointed out that several professional associations had posted guidance for scheduling individuals for breast imaging services during the COVID-19 pandemic, but these recommendations were based on expert opinion. The investigators’ goal was to help imaging facilities optimize the number of breast cancers that could be detected during periods of reduced capacity using clinical indication and individual characteristics.

The result was a risk-based strategy for triaging mammograms during periods of decreased capacity, which lead author Diana L. Miglioretti, PhD, explained was feasible to implement. Dr. Miglioretti is division chief of biostatistics in the department of public health sciences at University of California, Davis.

“Our risk model used information that is commonly collected by radiology facilities,” she said in an interview. “Vendors of electronic medical records could create tools that pull the information from the medical record, or could create fields in the scheduling system to efficiently collect this information when the mammogram is scheduled.”

Dr. Miglioretti emphasized that, once the information is collected in a standardized manner, “it would be straightforward to use a computer program to apply our algorithm to rank women based on their likelihood of having a breast cancer detected.”

“I think it is worth the investment to create these electronic tools now, given the potential for future shutdowns or periods of reduced capacity due to a variety of reasons, such as natural disasters and cyberattacks – or another pandemic,” she said.

Some facilities are still working through backlogs of mammograms that need to be rescheduled, which would be another way that this algorithm could be used. “They could use this approach to determine who should be scheduled first by using data available in the electronic medical record,” she added.
 

Five risk groups

Dr. Miglioretti and colleagues conducted a cohort study using data that was prospectively collected from mammography examinations performed from 2014 to 2019 at 92 radiology facilities in the Breast Cancer Surveillance Consortium. The cohort included 898,415 individuals who contributed to 1.8 million mammograms.

Information that included clinical indication for screening, breast symptoms, personal history of breast cancer, age, time since last mammogram/screening interval, family history of breast cancer, breast density, and history of high-risk breast lesion was collected from self-administered questionnaires at the time of mammography or extracted from electronic health records.

Following analysis, the data was categorized into five risk groups: very high (>50), high (22-50), moderate (10-22), low (5-10), and very low (<5) cancer detection rate per 1,000 mammograms. These thresholds were chosen based on the observed cancer detection rates and clinical expertise.

Of the group, about 1.7 million mammograms were from women without a personal history of breast cancer and 156,104 mammograms were from women with a breast cancer history. Most of the cohort were aged 50-69 years at the time of imaging, and 67.9% were White (11.2% Black, 11.3% Asian or Pacific Islander, 7% Hispanic, and 2.2% were another race/ethnicity or mixed race/ethnicity).

Their results showed that 12% of mammograms with very high (89.6-122.3 cancers detected per 1,000 mammograms) or high (36.1-47.5 cancers detected per 1,000 mammograms) cancer detection rates accounted for 55% of all detected cancers. These included mammograms that were done to evaluate an abnormal test or breast lump in individuals of all ages regardless of breast cancer history.

On the opposite end, 44.2% of mammograms with very low cancer detection rates accounted for 13.1% of detected cancers and that included annual screening tests in women aged 50-69 years (3.8 cancers detected per 1,000 mammograms) and all screening mammograms in individuals younger than 50 years regardless of screening interval (2.8 cancers detected per 1000 mammograms).
 

Treat with caution

In an accompanying editorial, Sarah M. Friedewald, MD, and Dipti Gupta, MD, both from Northwestern University, Chicago, pointed out that, while the authors examined a large dataset to identify a subgroup of patients who would most likely benefit from breast imaging in a setting where capacity is limited, “these data should be used with caution as the only barometer for whether a patient merits cancer screening during a period of rationing.”

They noted that, in the context of an acute crisis, when patient volume needs to be reduced very quickly, it is often impractical for clinicians to sift through patient records in order to capture the information necessary for triage. In addition, asking nonclinical schedulers to accurately pull data at this level, at the time when the patient calls to make an appointment, is unrealistic.

In the context of the pandemic, the editorialists wrote that, while this model uses risk for breast cancer to prioritize those to be seen in the clinic, the risk for complications from COVID-19 may also be an important factor to consider. For example, an older patient may be at a higher risk for breast cancer but may also face a higher risk for COVID-related complications. Conversely, a younger woman at a lower risk for serious COVID-related disease but who has breast cancer detected early will gain more life-years than an older patient.

There are also no algorithms to account for each patient’s perceived risk for breast cancer or COVID-19, and “the downstream effect of delaying cancer diagnosis may similarly lead to unintended consequences but may take longer to become apparent,” they wrote. “Focusing efforts on the operations of accommodating as many patients as possible, such as extending clinic hours, would be preferable.”

Finally, Dr. Friedewald and Dr. Gupta concluded that “the practicality of this process during the COVID-19 pandemic and extrapolation to other emergent settings are less obvious.”

The study was supported through a Patient-centered Outcomes Research Institute program award. Dr. Miglioretti reported receiving royalties from Elsevier outside the submitted work. Several coauthors report relationships with industry. Dr. Friedewald reported receiving grants from Hologic Research during the conduct of the study. Dr. Gupta disclosed no relevant financial relationships.

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

A novel risk-based approach could be an effective way to triage women for mammography during times of limited capacity, such as the situation during the COVID-19 pandemic, according to new findings.

Researchers evaluated almost 2 million mammograms that had been performed at more than 90 radiology centers and found that 12% of mammograms with “high” and “very high” cancer risk rates accounted for 55% of detected cancers.

In contrast, 44% of mammograms with very low cancer risk rates accounted for 13% of detected cancers. The study was published online March 25, 2021, in JAMA Network Open.

Cancer screening programs dramatically slowed or even came to a screeching halt during 2020, when restrictions and lockdowns were in place. The American Cancer Society even recommended that “no one should go to a health care facility for routine cancer screening,” as part of COVID-19 precautions.

However, concern was voiced that the pause in screening would allow patients with asymptomatic cancers or precursor lesions to develop into a more serious disease state.

The authors pointed out that several professional associations had posted guidance for scheduling individuals for breast imaging services during the COVID-19 pandemic, but these recommendations were based on expert opinion. The investigators’ goal was to help imaging facilities optimize the number of breast cancers that could be detected during periods of reduced capacity using clinical indication and individual characteristics.

The result was a risk-based strategy for triaging mammograms during periods of decreased capacity, which lead author Diana L. Miglioretti, PhD, explained was feasible to implement. Dr. Miglioretti is division chief of biostatistics in the department of public health sciences at University of California, Davis.

“Our risk model used information that is commonly collected by radiology facilities,” she said in an interview. “Vendors of electronic medical records could create tools that pull the information from the medical record, or could create fields in the scheduling system to efficiently collect this information when the mammogram is scheduled.”

Dr. Miglioretti emphasized that, once the information is collected in a standardized manner, “it would be straightforward to use a computer program to apply our algorithm to rank women based on their likelihood of having a breast cancer detected.”

“I think it is worth the investment to create these electronic tools now, given the potential for future shutdowns or periods of reduced capacity due to a variety of reasons, such as natural disasters and cyberattacks – or another pandemic,” she said.

Some facilities are still working through backlogs of mammograms that need to be rescheduled, which would be another way that this algorithm could be used. “They could use this approach to determine who should be scheduled first by using data available in the electronic medical record,” she added.
 

Five risk groups

Dr. Miglioretti and colleagues conducted a cohort study using data that was prospectively collected from mammography examinations performed from 2014 to 2019 at 92 radiology facilities in the Breast Cancer Surveillance Consortium. The cohort included 898,415 individuals who contributed to 1.8 million mammograms.

Information that included clinical indication for screening, breast symptoms, personal history of breast cancer, age, time since last mammogram/screening interval, family history of breast cancer, breast density, and history of high-risk breast lesion was collected from self-administered questionnaires at the time of mammography or extracted from electronic health records.

Following analysis, the data was categorized into five risk groups: very high (>50), high (22-50), moderate (10-22), low (5-10), and very low (<5) cancer detection rate per 1,000 mammograms. These thresholds were chosen based on the observed cancer detection rates and clinical expertise.

Of the group, about 1.7 million mammograms were from women without a personal history of breast cancer and 156,104 mammograms were from women with a breast cancer history. Most of the cohort were aged 50-69 years at the time of imaging, and 67.9% were White (11.2% Black, 11.3% Asian or Pacific Islander, 7% Hispanic, and 2.2% were another race/ethnicity or mixed race/ethnicity).

Their results showed that 12% of mammograms with very high (89.6-122.3 cancers detected per 1,000 mammograms) or high (36.1-47.5 cancers detected per 1,000 mammograms) cancer detection rates accounted for 55% of all detected cancers. These included mammograms that were done to evaluate an abnormal test or breast lump in individuals of all ages regardless of breast cancer history.

On the opposite end, 44.2% of mammograms with very low cancer detection rates accounted for 13.1% of detected cancers and that included annual screening tests in women aged 50-69 years (3.8 cancers detected per 1,000 mammograms) and all screening mammograms in individuals younger than 50 years regardless of screening interval (2.8 cancers detected per 1000 mammograms).
 

Treat with caution

In an accompanying editorial, Sarah M. Friedewald, MD, and Dipti Gupta, MD, both from Northwestern University, Chicago, pointed out that, while the authors examined a large dataset to identify a subgroup of patients who would most likely benefit from breast imaging in a setting where capacity is limited, “these data should be used with caution as the only barometer for whether a patient merits cancer screening during a period of rationing.”

They noted that, in the context of an acute crisis, when patient volume needs to be reduced very quickly, it is often impractical for clinicians to sift through patient records in order to capture the information necessary for triage. In addition, asking nonclinical schedulers to accurately pull data at this level, at the time when the patient calls to make an appointment, is unrealistic.

In the context of the pandemic, the editorialists wrote that, while this model uses risk for breast cancer to prioritize those to be seen in the clinic, the risk for complications from COVID-19 may also be an important factor to consider. For example, an older patient may be at a higher risk for breast cancer but may also face a higher risk for COVID-related complications. Conversely, a younger woman at a lower risk for serious COVID-related disease but who has breast cancer detected early will gain more life-years than an older patient.

There are also no algorithms to account for each patient’s perceived risk for breast cancer or COVID-19, and “the downstream effect of delaying cancer diagnosis may similarly lead to unintended consequences but may take longer to become apparent,” they wrote. “Focusing efforts on the operations of accommodating as many patients as possible, such as extending clinic hours, would be preferable.”

Finally, Dr. Friedewald and Dr. Gupta concluded that “the practicality of this process during the COVID-19 pandemic and extrapolation to other emergent settings are less obvious.”

The study was supported through a Patient-centered Outcomes Research Institute program award. Dr. Miglioretti reported receiving royalties from Elsevier outside the submitted work. Several coauthors report relationships with industry. Dr. Friedewald reported receiving grants from Hologic Research during the conduct of the study. Dr. Gupta disclosed no relevant financial relationships.

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

Treatment was attempted for both a suspected spider bite (2 weeks of topical triamcinolone 0.1%) and presumed cellulitis (oral doxycycline 100 mg bid/5 d), but neither improved her condition. Concerned for the possibility of cutaneous breast cancer, a punch biopsy was ordered and revealed diffuse dermal angiomatosis (DDA).

DDA is an uncommon proliferation of cutaneous blood vessels causing a reticular blood vessel pattern, as seen in this image. Typically, DDA is associated with tissue hypoxia due to arterial insufficiency from peripheral artery disease. In recent years, there have been numerous case reports of painful ulcerated lesions and reticular blood vessels occurring in women with large, pendulous breasts, increased body mass index, and a history of smoking. One theory suggests that the weight of the breasts causes tissue to stretch, compressing the blood vessels. This, combined with smoking, leads to localized hypoxia and DDA.

Treatments have included oral isotretinoin, calcium channel blockers, aspirin, or pentoxifylline to help circulation. Smoking cessation is recommended, as well as reduction mammoplasty to decrease the stretch on the tissues and relieve the local hypoxia. Although invasive, breast reduction surgery has moved to the forefront of therapy, with reports having shown resolution of the ulcers and pain.¹

Two important aspects of clinical medicine are highlighted by this case. First, nonhealing lesions that are not responding to prescribed therapies may require biopsy to rule out malignancy. Second, when there is difficulty making a diagnosis, especially with uncommon diseases, biopsy and input from a pathologist can be extremely helpful.

In this case, the patient was referred to Plastic Surgery and scheduled for reduction mammoplasty. The patient was advised to stop smoking for at least 4 weeks prior to the surgery to possibly improve her condition and reduce the likelihood of postoperative complications.

‌

Photo courtesy of Michael Louie, MD, and text courtesy of Michael Louie, MD, and Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque

Treatment was attempted for both a suspected spider bite (2 weeks of topical triamcinolone 0.1%) and presumed cellulitis (oral doxycycline 100 mg bid/5 d), but neither improved her condition. Concerned for the possibility of cutaneous breast cancer, a punch biopsy was ordered and revealed diffuse dermal angiomatosis (DDA).

DDA is an uncommon proliferation of cutaneous blood vessels causing a reticular blood vessel pattern, as seen in this image. Typically, DDA is associated with tissue hypoxia due to arterial insufficiency from peripheral artery disease. In recent years, there have been numerous case reports of painful ulcerated lesions and reticular blood vessels occurring in women with large, pendulous breasts, increased body mass index, and a history of smoking. One theory suggests that the weight of the breasts causes tissue to stretch, compressing the blood vessels. This, combined with smoking, leads to localized hypoxia and DDA.

Treatments have included oral isotretinoin, calcium channel blockers, aspirin, or pentoxifylline to help circulation. Smoking cessation is recommended, as well as reduction mammoplasty to decrease the stretch on the tissues and relieve the local hypoxia. Although invasive, breast reduction surgery has moved to the forefront of therapy, with reports having shown resolution of the ulcers and pain.¹

Two important aspects of clinical medicine are highlighted by this case. First, nonhealing lesions that are not responding to prescribed therapies may require biopsy to rule out malignancy. Second, when there is difficulty making a diagnosis, especially with uncommon diseases, biopsy and input from a pathologist can be extremely helpful.

In this case, the patient was referred to Plastic Surgery and scheduled for reduction mammoplasty. The patient was advised to stop smoking for at least 4 weeks prior to the surgery to possibly improve her condition and reduce the likelihood of postoperative complications.

‌

Photo courtesy of Michael Louie, MD, and text courtesy of Michael Louie, MD, and Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque

Treatment was attempted for both a suspected spider bite (2 weeks of topical triamcinolone 0.1%) and presumed cellulitis (oral doxycycline 100 mg bid/5 d), but neither improved her condition. Concerned for the possibility of cutaneous breast cancer, a punch biopsy was ordered and revealed diffuse dermal angiomatosis (DDA).

DDA is an uncommon proliferation of cutaneous blood vessels causing a reticular blood vessel pattern, as seen in this image. Typically, DDA is associated with tissue hypoxia due to arterial insufficiency from peripheral artery disease. In recent years, there have been numerous case reports of painful ulcerated lesions and reticular blood vessels occurring in women with large, pendulous breasts, increased body mass index, and a history of smoking. One theory suggests that the weight of the breasts causes tissue to stretch, compressing the blood vessels. This, combined with smoking, leads to localized hypoxia and DDA.

Treatments have included oral isotretinoin, calcium channel blockers, aspirin, or pentoxifylline to help circulation. Smoking cessation is recommended, as well as reduction mammoplasty to decrease the stretch on the tissues and relieve the local hypoxia. Although invasive, breast reduction surgery has moved to the forefront of therapy, with reports having shown resolution of the ulcers and pain.¹

Two important aspects of clinical medicine are highlighted by this case. First, nonhealing lesions that are not responding to prescribed therapies may require biopsy to rule out malignancy. Second, when there is difficulty making a diagnosis, especially with uncommon diseases, biopsy and input from a pathologist can be extremely helpful.

In this case, the patient was referred to Plastic Surgery and scheduled for reduction mammoplasty. The patient was advised to stop smoking for at least 4 weeks prior to the surgery to possibly improve her condition and reduce the likelihood of postoperative complications.

‌

Photo courtesy of Michael Louie, MD, and text courtesy of Michael Louie, MD, and Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque

A controversial, big-budget breast cancer screening trial that has been chronically unable to attract enough female participants since its debut in 2017 got a vote of confidence from a special working group of the National Cancer Institute (NCI) on March 17.

The Tomosynthesis Mammography Imaging Screening Trial (TMIST) should continue, but with modification, the expert group concluded in its report.

The randomized trial, with an estimated cost of $100 million, compares two kinds of mammography screenings for breast cancer in healthy women. One group of patients is screened with digital breast tomosynthesis, also known as 3-D mammography; the other is screened with the older, less expensive 2-D digital technology.

Tomosynthesis is already considered superior in detecting small cancers and reducing callbacks and is increasingly being used in the real world, leading some experts in the field to say that TMIST is critically hampered by women’s and radiologists’ preference for 3-D mammography.

At a meeting of an NCI advisory board in September 2020, there was a suggestion that the federal agency may kill the trial.

But at the latest meeting, the working group proposed that the trial should live on.

One of the main problems with the trial has been recruitment; the recommended changes discussed at the meeting include reducing the number of women needed in the study (from 165,000 to 102,000), which would allow patient “accrual to be completed more quickly,” the working group noted. In addition, the target date for completing patient accrual would be moved to 2023, 3 years after the original completion date of 2020.

The group’s recommendations now go to NCI staff for scientific review. The NCI will then decide about implementing the proposed changes.

The trial, which is the NCI’s largest and most expensive screening study, has never come close to targeted monthly enrollment. It was enrolling fewer than 1,500 patients per month over a 2-year period, instead of the projected 5,500 per month, Philip Castle, PhD, MPH, director of the NCI’s Division of Cancer Prevention, said last year. He called for a review of TMIST’s “feasibility and relevance” in view of the increasing use of tomosynthesis in the United States, as well as other factors.

The new technology has been “rapidly adopted” by facilities in North America, the working group noted. As of December 2020, approximately 74% of breast cancer screening clinics in the United States had at least one tomosynthesis or 3-D system; 42% of the mammography machines were 3-D.

This trend of increasing use of 3-D machines might be too much for TMIST to surmount, said Nancy Davidson, MD, of the Fred Hutchinson Cancer Research Center, in Seattle, who chaired the working group.

“We are worried the challenges [to patient accrual] may persist due to the increasing adoption of three-dimensional breast tomosynthesis in the United States over time,” she said during the working group’s virtual presentation of the report to the NCI’s Clinical Trials and Translational Research Advisory Committee.

Committee member Smita Bhatia, MD, PhD, of the University of Alabama at Birmingham, wondered, “What are the ongoing barriers that [TMIST investigators] are going to face beside recruitment?”

Dr. Davidson answered by speaking, again, about market penetration of tomosynthesis machines and suggested that the recruitment problems and the availability of 3-D mammography are intertwined.

“Is this a technology that has or will arrive, at which point it may not be very easy to put the genie back in the bottle?” she asked.

That question has already been answered – widespread use of tomosynthesis is here to stay, argued Daniel Kopans, MD, of Harvard Medical School, Boston, who invented digital breast tomosynthesis but no longer benefits financially from his invention because the patent has expired.

“The horse is out of the barn,” Dr. Kopans said in an interview. By the time the study results are available, digital mammography will be a tool of the past, he said.

TMIST is a trial “that should never have been started in the first place, and it’s failing,” he said. “I was hoping they [the NCI] would say, ‘Let’s stop this because there’s not enough accrual.’ But it looks like they’re not.”

“TMIST is a waste of money,” said Dr. Kopans, repeating a criticism he has made in the past.
 

A drop in study power

The new recommendations for TMIST come about 1 year after Medscape Medical News reported that the study was lagging in enrollment of both patients and participating sites/physicians.

Last year, two TMIST study investigators said it had been difficult enlisting sites, in part because many radiologists and facilities – informed by their experience and previous research results – already believe that the 3-D technology is superior.

Currently, most 3-D systems are used in conjunction with 2-D. First, two static images of the breast are taken (2-D), and then the unit moves in an arc, taking multiple images of the breast (3-D). Thus, 3-D is widely described as allowing clinicians to flip through the images like “pages in a book” and as offering a superior read of the breast.

The NCI working group concedes that “there is evidence that screening utilizing tomosynthesis may reduce recall rates and improve cancer detection,” but it says the trial is needed to address “questions that still remain regarding the overall benefit to patients.”

Furthermore, tomosynthesis “may carry higher out-of-pocket costs for women and is more labor intensive and costly for health care systems in that it requires about twice as much reader time for interpretation,” the working group said.

The “main hypothesis of TMIST” is that “tomosynthesis will decrease the cumulative incidence of advanced breast cancers, a surrogate for mortality, compared to standard digital mammography,” posits the group.

Advanced breast cancer is defined in TMIST as invasive breast cancers that meet any of the following criteria:

• Distant metastases
• At least one lymph node macrometastasis
• Tumor size >1 cm and triple-negative or positive for human epidermal growth factor receptor
• Tumor size ≥ 20 mm unless of pure mucinous or other favorable histologies.

In the original study design, the sample size was estimated to be sufficient to provide 90% power to detect a 20% relative reduction in the proportion of advanced cancers in the intervention arm (tomosynthesis, or 3-D) compared to the control arm (digital mammography, or 2-D) 4.5 years from randomization.

Now, with fewer patients and a revised analytic approach, the study’s statistical power will be decreased to 80% from the original 90%.

Also, an advanced cancer is counted “if it occurs at any time while the participant is on study.”

Dr. Kopans says that is a problem.

“That is a huge mistake, since digital breast tomosynthesis cannot impact prevalent cancers. They are already there. This means that their ‘power calculation’ is wrong, and they won’t have the power that they are claiming,” he said.

Dr. Kopans explained that the first screen in TMIST will have “no effect on the number of advanced cancers.” That’s because the cancers will have already grown enough to become advanced, he said.

On the other hand, an initial screening might detect and thus lead to the removal of nonadvanced, smaller cancers, which, had they not been detected and removed, would have grown to become advanced cancers by the next year. Thus, the screenings done after the first year are the ones that potentially prove the effect of the intervention.

However, the working group report says that changes to the study will not affect anything other than a 10% reduction in the study’s power.

The working group is concerned about TMIST going on for years and years. For that reason, they recommended that the NCI establish “strict criteria for termination of the study” if accrual goals are not met. However, those parameters have not been developed, and it was not part of the study group’s mission to establish them.

The working group was sponsored by the NCI. Dr. Kopans reports consulting with DART Imaging in China.

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

A controversial, big-budget breast cancer screening trial that has been chronically unable to attract enough female participants since its debut in 2017 got a vote of confidence from a special working group of the National Cancer Institute (NCI) on March 17.

The Tomosynthesis Mammography Imaging Screening Trial (TMIST) should continue, but with modification, the expert group concluded in its report.

The randomized trial, with an estimated cost of $100 million, compares two kinds of mammography screenings for breast cancer in healthy women. One group of patients is screened with digital breast tomosynthesis, also known as 3-D mammography; the other is screened with the older, less expensive 2-D digital technology.

Tomosynthesis is already considered superior in detecting small cancers and reducing callbacks and is increasingly being used in the real world, leading some experts in the field to say that TMIST is critically hampered by women’s and radiologists’ preference for 3-D mammography.

At a meeting of an NCI advisory board in September 2020, there was a suggestion that the federal agency may kill the trial.

But at the latest meeting, the working group proposed that the trial should live on.

One of the main problems with the trial has been recruitment; the recommended changes discussed at the meeting include reducing the number of women needed in the study (from 165,000 to 102,000), which would allow patient “accrual to be completed more quickly,” the working group noted. In addition, the target date for completing patient accrual would be moved to 2023, 3 years after the original completion date of 2020.

The group’s recommendations now go to NCI staff for scientific review. The NCI will then decide about implementing the proposed changes.

The trial, which is the NCI’s largest and most expensive screening study, has never come close to targeted monthly enrollment. It was enrolling fewer than 1,500 patients per month over a 2-year period, instead of the projected 5,500 per month, Philip Castle, PhD, MPH, director of the NCI’s Division of Cancer Prevention, said last year. He called for a review of TMIST’s “feasibility and relevance” in view of the increasing use of tomosynthesis in the United States, as well as other factors.

The new technology has been “rapidly adopted” by facilities in North America, the working group noted. As of December 2020, approximately 74% of breast cancer screening clinics in the United States had at least one tomosynthesis or 3-D system; 42% of the mammography machines were 3-D.

This trend of increasing use of 3-D machines might be too much for TMIST to surmount, said Nancy Davidson, MD, of the Fred Hutchinson Cancer Research Center, in Seattle, who chaired the working group.

“We are worried the challenges [to patient accrual] may persist due to the increasing adoption of three-dimensional breast tomosynthesis in the United States over time,” she said during the working group’s virtual presentation of the report to the NCI’s Clinical Trials and Translational Research Advisory Committee.

Committee member Smita Bhatia, MD, PhD, of the University of Alabama at Birmingham, wondered, “What are the ongoing barriers that [TMIST investigators] are going to face beside recruitment?”

Dr. Davidson answered by speaking, again, about market penetration of tomosynthesis machines and suggested that the recruitment problems and the availability of 3-D mammography are intertwined.

“Is this a technology that has or will arrive, at which point it may not be very easy to put the genie back in the bottle?” she asked.

That question has already been answered – widespread use of tomosynthesis is here to stay, argued Daniel Kopans, MD, of Harvard Medical School, Boston, who invented digital breast tomosynthesis but no longer benefits financially from his invention because the patent has expired.

“The horse is out of the barn,” Dr. Kopans said in an interview. By the time the study results are available, digital mammography will be a tool of the past, he said.

TMIST is a trial “that should never have been started in the first place, and it’s failing,” he said. “I was hoping they [the NCI] would say, ‘Let’s stop this because there’s not enough accrual.’ But it looks like they’re not.”

“TMIST is a waste of money,” said Dr. Kopans, repeating a criticism he has made in the past.
 

A drop in study power

The new recommendations for TMIST come about 1 year after Medscape Medical News reported that the study was lagging in enrollment of both patients and participating sites/physicians.

Last year, two TMIST study investigators said it had been difficult enlisting sites, in part because many radiologists and facilities – informed by their experience and previous research results – already believe that the 3-D technology is superior.

Currently, most 3-D systems are used in conjunction with 2-D. First, two static images of the breast are taken (2-D), and then the unit moves in an arc, taking multiple images of the breast (3-D). Thus, 3-D is widely described as allowing clinicians to flip through the images like “pages in a book” and as offering a superior read of the breast.

The NCI working group concedes that “there is evidence that screening utilizing tomosynthesis may reduce recall rates and improve cancer detection,” but it says the trial is needed to address “questions that still remain regarding the overall benefit to patients.”

Furthermore, tomosynthesis “may carry higher out-of-pocket costs for women and is more labor intensive and costly for health care systems in that it requires about twice as much reader time for interpretation,” the working group said.

The “main hypothesis of TMIST” is that “tomosynthesis will decrease the cumulative incidence of advanced breast cancers, a surrogate for mortality, compared to standard digital mammography,” posits the group.

Advanced breast cancer is defined in TMIST as invasive breast cancers that meet any of the following criteria:

• Distant metastases
• At least one lymph node macrometastasis
• Tumor size >1 cm and triple-negative or positive for human epidermal growth factor receptor
• Tumor size ≥ 20 mm unless of pure mucinous or other favorable histologies.

In the original study design, the sample size was estimated to be sufficient to provide 90% power to detect a 20% relative reduction in the proportion of advanced cancers in the intervention arm (tomosynthesis, or 3-D) compared to the control arm (digital mammography, or 2-D) 4.5 years from randomization.

Now, with fewer patients and a revised analytic approach, the study’s statistical power will be decreased to 80% from the original 90%.

Also, an advanced cancer is counted “if it occurs at any time while the participant is on study.”

Dr. Kopans says that is a problem.

“That is a huge mistake, since digital breast tomosynthesis cannot impact prevalent cancers. They are already there. This means that their ‘power calculation’ is wrong, and they won’t have the power that they are claiming,” he said.

Dr. Kopans explained that the first screen in TMIST will have “no effect on the number of advanced cancers.” That’s because the cancers will have already grown enough to become advanced, he said.

On the other hand, an initial screening might detect and thus lead to the removal of nonadvanced, smaller cancers, which, had they not been detected and removed, would have grown to become advanced cancers by the next year. Thus, the screenings done after the first year are the ones that potentially prove the effect of the intervention.

However, the working group report says that changes to the study will not affect anything other than a 10% reduction in the study’s power.

The working group is concerned about TMIST going on for years and years. For that reason, they recommended that the NCI establish “strict criteria for termination of the study” if accrual goals are not met. However, those parameters have not been developed, and it was not part of the study group’s mission to establish them.

The working group was sponsored by the NCI. Dr. Kopans reports consulting with DART Imaging in China.

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

A controversial, big-budget breast cancer screening trial that has been chronically unable to attract enough female participants since its debut in 2017 got a vote of confidence from a special working group of the National Cancer Institute (NCI) on March 17.

The Tomosynthesis Mammography Imaging Screening Trial (TMIST) should continue, but with modification, the expert group concluded in its report.

The randomized trial, with an estimated cost of $100 million, compares two kinds of mammography screenings for breast cancer in healthy women. One group of patients is screened with digital breast tomosynthesis, also known as 3-D mammography; the other is screened with the older, less expensive 2-D digital technology.

Tomosynthesis is already considered superior in detecting small cancers and reducing callbacks and is increasingly being used in the real world, leading some experts in the field to say that TMIST is critically hampered by women’s and radiologists’ preference for 3-D mammography.

At a meeting of an NCI advisory board in September 2020, there was a suggestion that the federal agency may kill the trial.

But at the latest meeting, the working group proposed that the trial should live on.

One of the main problems with the trial has been recruitment; the recommended changes discussed at the meeting include reducing the number of women needed in the study (from 165,000 to 102,000), which would allow patient “accrual to be completed more quickly,” the working group noted. In addition, the target date for completing patient accrual would be moved to 2023, 3 years after the original completion date of 2020.

The group’s recommendations now go to NCI staff for scientific review. The NCI will then decide about implementing the proposed changes.

The trial, which is the NCI’s largest and most expensive screening study, has never come close to targeted monthly enrollment. It was enrolling fewer than 1,500 patients per month over a 2-year period, instead of the projected 5,500 per month, Philip Castle, PhD, MPH, director of the NCI’s Division of Cancer Prevention, said last year. He called for a review of TMIST’s “feasibility and relevance” in view of the increasing use of tomosynthesis in the United States, as well as other factors.

The new technology has been “rapidly adopted” by facilities in North America, the working group noted. As of December 2020, approximately 74% of breast cancer screening clinics in the United States had at least one tomosynthesis or 3-D system; 42% of the mammography machines were 3-D.

This trend of increasing use of 3-D machines might be too much for TMIST to surmount, said Nancy Davidson, MD, of the Fred Hutchinson Cancer Research Center, in Seattle, who chaired the working group.

“We are worried the challenges [to patient accrual] may persist due to the increasing adoption of three-dimensional breast tomosynthesis in the United States over time,” she said during the working group’s virtual presentation of the report to the NCI’s Clinical Trials and Translational Research Advisory Committee.

Committee member Smita Bhatia, MD, PhD, of the University of Alabama at Birmingham, wondered, “What are the ongoing barriers that [TMIST investigators] are going to face beside recruitment?”

Dr. Davidson answered by speaking, again, about market penetration of tomosynthesis machines and suggested that the recruitment problems and the availability of 3-D mammography are intertwined.

“Is this a technology that has or will arrive, at which point it may not be very easy to put the genie back in the bottle?” she asked.

That question has already been answered – widespread use of tomosynthesis is here to stay, argued Daniel Kopans, MD, of Harvard Medical School, Boston, who invented digital breast tomosynthesis but no longer benefits financially from his invention because the patent has expired.

“The horse is out of the barn,” Dr. Kopans said in an interview. By the time the study results are available, digital mammography will be a tool of the past, he said.

TMIST is a trial “that should never have been started in the first place, and it’s failing,” he said. “I was hoping they [the NCI] would say, ‘Let’s stop this because there’s not enough accrual.’ But it looks like they’re not.”

“TMIST is a waste of money,” said Dr. Kopans, repeating a criticism he has made in the past.
 

A drop in study power

The new recommendations for TMIST come about 1 year after Medscape Medical News reported that the study was lagging in enrollment of both patients and participating sites/physicians.

Last year, two TMIST study investigators said it had been difficult enlisting sites, in part because many radiologists and facilities – informed by their experience and previous research results – already believe that the 3-D technology is superior.

Currently, most 3-D systems are used in conjunction with 2-D. First, two static images of the breast are taken (2-D), and then the unit moves in an arc, taking multiple images of the breast (3-D). Thus, 3-D is widely described as allowing clinicians to flip through the images like “pages in a book” and as offering a superior read of the breast.

The NCI working group concedes that “there is evidence that screening utilizing tomosynthesis may reduce recall rates and improve cancer detection,” but it says the trial is needed to address “questions that still remain regarding the overall benefit to patients.”

Furthermore, tomosynthesis “may carry higher out-of-pocket costs for women and is more labor intensive and costly for health care systems in that it requires about twice as much reader time for interpretation,” the working group said.

The “main hypothesis of TMIST” is that “tomosynthesis will decrease the cumulative incidence of advanced breast cancers, a surrogate for mortality, compared to standard digital mammography,” posits the group.

Advanced breast cancer is defined in TMIST as invasive breast cancers that meet any of the following criteria:

• Distant metastases
• At least one lymph node macrometastasis
• Tumor size >1 cm and triple-negative or positive for human epidermal growth factor receptor
• Tumor size ≥ 20 mm unless of pure mucinous or other favorable histologies.

In the original study design, the sample size was estimated to be sufficient to provide 90% power to detect a 20% relative reduction in the proportion of advanced cancers in the intervention arm (tomosynthesis, or 3-D) compared to the control arm (digital mammography, or 2-D) 4.5 years from randomization.

Now, with fewer patients and a revised analytic approach, the study’s statistical power will be decreased to 80% from the original 90%.

Also, an advanced cancer is counted “if it occurs at any time while the participant is on study.”

Dr. Kopans says that is a problem.

“That is a huge mistake, since digital breast tomosynthesis cannot impact prevalent cancers. They are already there. This means that their ‘power calculation’ is wrong, and they won’t have the power that they are claiming,” he said.

Dr. Kopans explained that the first screen in TMIST will have “no effect on the number of advanced cancers.” That’s because the cancers will have already grown enough to become advanced, he said.

On the other hand, an initial screening might detect and thus lead to the removal of nonadvanced, smaller cancers, which, had they not been detected and removed, would have grown to become advanced cancers by the next year. Thus, the screenings done after the first year are the ones that potentially prove the effect of the intervention.

However, the working group report says that changes to the study will not affect anything other than a 10% reduction in the study’s power.

The working group is concerned about TMIST going on for years and years. For that reason, they recommended that the NCI establish “strict criteria for termination of the study” if accrual goals are not met. However, those parameters have not been developed, and it was not part of the study group’s mission to establish them.

The working group was sponsored by the NCI. Dr. Kopans reports consulting with DART Imaging in China.

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

Approximately 68 million cases of sexually transmitted infections are reported in the United States each year, yet antiquated approaches to STI prevention, in addition to health care inequities and lack of funding, have substantially prevented providers and officials from curbing the spread. In response to rising case numbers, the National Academies of Sciences, Engineering, and Medicine released a report this week with recommendations to modernize the nation’s STI surveillance and monitoring systems, increase the capabilities of the STI workforce, and address structural barriers to STI prevention and access to care.

Given the rising rates of STIs and the urgent, unmet need for prevention and treatment, the Centers for Disease Control and Prevention’s National Association of County and City Health Officials commissioned the National Academies to develop actionable recommendations to control STIs. The new report marks a long road toward the public’s willingness to discuss STDs, or what a 1997 Institute of Medicine report described as a “hidden epidemic” that had been largely neglected in public discourse.

Jeffrey Crowley, MPH, committee member and an author of the new National Academies report, said in an interview that, despite the increased openness to discuss STIs in today’s society, STD rates since the late 1990s have gotten much worse. Lack of appropriate governmental funding for research and drug development, structural inequities, and persisting stigmatization are key drivers for rising rates, explained Mr. Crowley.
 

Addressing structural barriers to STI prevention

Playing a prominent role in the National Academies report are issues of structural and institutional barriers to STI prevention and care. In the report, the authors argued that a policy-based approach should seek to promote sexual health and eliminate structural racism and inequities to drive improvements in STI management.

“We think it’s these structural factors that are central to all the inequities that play out,” said Mr. Crowley, “and they either don’t get any attention or, if they do get attention, people don’t really speak concretely enough about how we address them.”

The concrete steps, as outlined in the report, begin with addressing factors that involve the health care industry at large. Automatic STI screening as part of routine visits, alerts in electronic health records that remind clinicians to screen patients, and reminders to test patients can be initial low-cost actions health care systems can take to improve STI testing, particularly in marginalized communities. Mr. Crowley noted that greater evidence is needed to support further steps to address structural factors that contribute to barriers in STI screening and treatment access.

Given the complexities inherent in structural barriers to STI care, the report calls on a whole-government response, in partnership with affected communities, to normalize discussions involving sexual well-being. “We have to ask ourselves how we can build healthier communities and how can we integrate sexual health into that dialogue in a way that improves our response to STI prevention and control,” Mr. Crowley explained.
 

Harnessing AI and dating apps

The report also addresses the power of artificial intelligence to predict STI rates and to discover trends in risk factors, both of which may improve STI surveillance and assist in the development of tailored interventions. The report calls for policy that will enable companies and the government to capitalize on AI to evaluate large collections of data in EHRs, insurance claims databases, social media, search engines, and even dating apps.

In particular, dating apps could be an avenue through which the public and private sectors could improve STI prevention, diagnosis, and treatment. “People want to focus on this idea of whether these apps increase transmission risk,” said Mr. Crowley. “But we would say that this is asking the wrong question, because these technologies are not going away.” He noted that private and public enterprises could work together to leverage these technologies to increase awareness of prevention and testing.
 

Unifying the STI/HIV and COVID-19 workforce

The report also recommends that the nation unify the STI/HIV workforce with the COVID-19 workforce. Given the high levels of expertise in these professional working groups, the report suggests unification could potentially address both the current crisis and possible future disease outbreaks. Combining COVID-19 response teams with underresourced STI/HIV programs may also improve the delivery of STI testing, considering that STI testing programs have had to compete for resources during the pandemic.

Addressing stigma

The National Academies report also addresses the ongoing issue of stigma, which results from “blaming” individuals and the choices they make so as to create shame, embarrassment, and discrimination. Because of stigma, sexually active people may be unwilling to seek recommended screening, which can lead to delays in diagnosis and treatment and can increase the risk for negative health outcomes.

“As a nation, we’ve almost focused too intently on individual-level factors in a way that’s driven stigma and really hasn’t been helpful for combating the problem,” said Mr. Crowley. He added that, instead of focusing solely on individual-level choices, the nation should instead work to reframe sexual health as a key aspect of overall physical, mental, and emotional well-being. Doing so could create more opportunities to address structural barriers to STI prevention and ensure that more prevention and screening services are available in stigma-free environments.

“I know what we’re recommending is ambitious, but it’s not too big to be achieved, and we’re not saying tomorrow we’re going to transform the world,” Mr. Crowley concluded. “It’s a puzzle with many pieces, but the long-term impact is really all of these pieces fitting together so that, over time, we can reduce the burden STIs have on the population.”
 

Implications for real-world change

H. Hunter Handsfield, MD, professor emeritus of medicine for the Center for AIDS and STD at the University of Washington, Seattle, said in an interview that this report essentially is a response to evolving societal changes, new and emerging means of social engagement, and increased focus on racial/ethnic disparities. “These features have all come to the forefront of health care and general policy discussions in recent years,” said Dr. Handsfield, who was not part of the committee that developed the NAS report.

Greater scrutiny on public health infrastructure and its relationship with health disparities in the United States makes the publication of these new recommendations especially appropriate during this era of enhanced focus on social justice. Although the report features the tone and quality needed to bolster bipartisan support, said Dr. Handsfield, it’s hard to predict whether such support will come to fruition in today’s political environment.

In terms of the effects the recommendations may have on STI rates, Dr. Handsfield noted that cherry-picking elements from the report to direct policy may result in its having only a trivial impact. “The report is really an appropriate and necessary response, and almost all the recommendations made can be helpful,” he said, “but for true effectiveness, all the elements need to be implemented to drive policy and funding.”

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

Approximately 68 million cases of sexually transmitted infections are reported in the United States each year, yet antiquated approaches to STI prevention, in addition to health care inequities and lack of funding, have substantially prevented providers and officials from curbing the spread. In response to rising case numbers, the National Academies of Sciences, Engineering, and Medicine released a report this week with recommendations to modernize the nation’s STI surveillance and monitoring systems, increase the capabilities of the STI workforce, and address structural barriers to STI prevention and access to care.

Given the rising rates of STIs and the urgent, unmet need for prevention and treatment, the Centers for Disease Control and Prevention’s National Association of County and City Health Officials commissioned the National Academies to develop actionable recommendations to control STIs. The new report marks a long road toward the public’s willingness to discuss STDs, or what a 1997 Institute of Medicine report described as a “hidden epidemic” that had been largely neglected in public discourse.

Jeffrey Crowley, MPH, committee member and an author of the new National Academies report, said in an interview that, despite the increased openness to discuss STIs in today’s society, STD rates since the late 1990s have gotten much worse. Lack of appropriate governmental funding for research and drug development, structural inequities, and persisting stigmatization are key drivers for rising rates, explained Mr. Crowley.
 

Addressing structural barriers to STI prevention

Playing a prominent role in the National Academies report are issues of structural and institutional barriers to STI prevention and care. In the report, the authors argued that a policy-based approach should seek to promote sexual health and eliminate structural racism and inequities to drive improvements in STI management.

“We think it’s these structural factors that are central to all the inequities that play out,” said Mr. Crowley, “and they either don’t get any attention or, if they do get attention, people don’t really speak concretely enough about how we address them.”

The concrete steps, as outlined in the report, begin with addressing factors that involve the health care industry at large. Automatic STI screening as part of routine visits, alerts in electronic health records that remind clinicians to screen patients, and reminders to test patients can be initial low-cost actions health care systems can take to improve STI testing, particularly in marginalized communities. Mr. Crowley noted that greater evidence is needed to support further steps to address structural factors that contribute to barriers in STI screening and treatment access.

Given the complexities inherent in structural barriers to STI care, the report calls on a whole-government response, in partnership with affected communities, to normalize discussions involving sexual well-being. “We have to ask ourselves how we can build healthier communities and how can we integrate sexual health into that dialogue in a way that improves our response to STI prevention and control,” Mr. Crowley explained.
 

Harnessing AI and dating apps

The report also addresses the power of artificial intelligence to predict STI rates and to discover trends in risk factors, both of which may improve STI surveillance and assist in the development of tailored interventions. The report calls for policy that will enable companies and the government to capitalize on AI to evaluate large collections of data in EHRs, insurance claims databases, social media, search engines, and even dating apps.

In particular, dating apps could be an avenue through which the public and private sectors could improve STI prevention, diagnosis, and treatment. “People want to focus on this idea of whether these apps increase transmission risk,” said Mr. Crowley. “But we would say that this is asking the wrong question, because these technologies are not going away.” He noted that private and public enterprises could work together to leverage these technologies to increase awareness of prevention and testing.
 

Unifying the STI/HIV and COVID-19 workforce

The report also recommends that the nation unify the STI/HIV workforce with the COVID-19 workforce. Given the high levels of expertise in these professional working groups, the report suggests unification could potentially address both the current crisis and possible future disease outbreaks. Combining COVID-19 response teams with underresourced STI/HIV programs may also improve the delivery of STI testing, considering that STI testing programs have had to compete for resources during the pandemic.

Addressing stigma

The National Academies report also addresses the ongoing issue of stigma, which results from “blaming” individuals and the choices they make so as to create shame, embarrassment, and discrimination. Because of stigma, sexually active people may be unwilling to seek recommended screening, which can lead to delays in diagnosis and treatment and can increase the risk for negative health outcomes.

“As a nation, we’ve almost focused too intently on individual-level factors in a way that’s driven stigma and really hasn’t been helpful for combating the problem,” said Mr. Crowley. He added that, instead of focusing solely on individual-level choices, the nation should instead work to reframe sexual health as a key aspect of overall physical, mental, and emotional well-being. Doing so could create more opportunities to address structural barriers to STI prevention and ensure that more prevention and screening services are available in stigma-free environments.

“I know what we’re recommending is ambitious, but it’s not too big to be achieved, and we’re not saying tomorrow we’re going to transform the world,” Mr. Crowley concluded. “It’s a puzzle with many pieces, but the long-term impact is really all of these pieces fitting together so that, over time, we can reduce the burden STIs have on the population.”
 

Implications for real-world change

H. Hunter Handsfield, MD, professor emeritus of medicine for the Center for AIDS and STD at the University of Washington, Seattle, said in an interview that this report essentially is a response to evolving societal changes, new and emerging means of social engagement, and increased focus on racial/ethnic disparities. “These features have all come to the forefront of health care and general policy discussions in recent years,” said Dr. Handsfield, who was not part of the committee that developed the NAS report.

Greater scrutiny on public health infrastructure and its relationship with health disparities in the United States makes the publication of these new recommendations especially appropriate during this era of enhanced focus on social justice. Although the report features the tone and quality needed to bolster bipartisan support, said Dr. Handsfield, it’s hard to predict whether such support will come to fruition in today’s political environment.

In terms of the effects the recommendations may have on STI rates, Dr. Handsfield noted that cherry-picking elements from the report to direct policy may result in its having only a trivial impact. “The report is really an appropriate and necessary response, and almost all the recommendations made can be helpful,” he said, “but for true effectiveness, all the elements need to be implemented to drive policy and funding.”

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

Approximately 68 million cases of sexually transmitted infections are reported in the United States each year, yet antiquated approaches to STI prevention, in addition to health care inequities and lack of funding, have substantially prevented providers and officials from curbing the spread. In response to rising case numbers, the National Academies of Sciences, Engineering, and Medicine released a report this week with recommendations to modernize the nation’s STI surveillance and monitoring systems, increase the capabilities of the STI workforce, and address structural barriers to STI prevention and access to care.

Given the rising rates of STIs and the urgent, unmet need for prevention and treatment, the Centers for Disease Control and Prevention’s National Association of County and City Health Officials commissioned the National Academies to develop actionable recommendations to control STIs. The new report marks a long road toward the public’s willingness to discuss STDs, or what a 1997 Institute of Medicine report described as a “hidden epidemic” that had been largely neglected in public discourse.

Jeffrey Crowley, MPH, committee member and an author of the new National Academies report, said in an interview that, despite the increased openness to discuss STIs in today’s society, STD rates since the late 1990s have gotten much worse. Lack of appropriate governmental funding for research and drug development, structural inequities, and persisting stigmatization are key drivers for rising rates, explained Mr. Crowley.
 

Addressing structural barriers to STI prevention

Playing a prominent role in the National Academies report are issues of structural and institutional barriers to STI prevention and care. In the report, the authors argued that a policy-based approach should seek to promote sexual health and eliminate structural racism and inequities to drive improvements in STI management.

“We think it’s these structural factors that are central to all the inequities that play out,” said Mr. Crowley, “and they either don’t get any attention or, if they do get attention, people don’t really speak concretely enough about how we address them.”

The concrete steps, as outlined in the report, begin with addressing factors that involve the health care industry at large. Automatic STI screening as part of routine visits, alerts in electronic health records that remind clinicians to screen patients, and reminders to test patients can be initial low-cost actions health care systems can take to improve STI testing, particularly in marginalized communities. Mr. Crowley noted that greater evidence is needed to support further steps to address structural factors that contribute to barriers in STI screening and treatment access.

Given the complexities inherent in structural barriers to STI care, the report calls on a whole-government response, in partnership with affected communities, to normalize discussions involving sexual well-being. “We have to ask ourselves how we can build healthier communities and how can we integrate sexual health into that dialogue in a way that improves our response to STI prevention and control,” Mr. Crowley explained.
 

Harnessing AI and dating apps

The report also addresses the power of artificial intelligence to predict STI rates and to discover trends in risk factors, both of which may improve STI surveillance and assist in the development of tailored interventions. The report calls for policy that will enable companies and the government to capitalize on AI to evaluate large collections of data in EHRs, insurance claims databases, social media, search engines, and even dating apps.

In particular, dating apps could be an avenue through which the public and private sectors could improve STI prevention, diagnosis, and treatment. “People want to focus on this idea of whether these apps increase transmission risk,” said Mr. Crowley. “But we would say that this is asking the wrong question, because these technologies are not going away.” He noted that private and public enterprises could work together to leverage these technologies to increase awareness of prevention and testing.
 

Unifying the STI/HIV and COVID-19 workforce

The report also recommends that the nation unify the STI/HIV workforce with the COVID-19 workforce. Given the high levels of expertise in these professional working groups, the report suggests unification could potentially address both the current crisis and possible future disease outbreaks. Combining COVID-19 response teams with underresourced STI/HIV programs may also improve the delivery of STI testing, considering that STI testing programs have had to compete for resources during the pandemic.

Addressing stigma

The National Academies report also addresses the ongoing issue of stigma, which results from “blaming” individuals and the choices they make so as to create shame, embarrassment, and discrimination. Because of stigma, sexually active people may be unwilling to seek recommended screening, which can lead to delays in diagnosis and treatment and can increase the risk for negative health outcomes.

“As a nation, we’ve almost focused too intently on individual-level factors in a way that’s driven stigma and really hasn’t been helpful for combating the problem,” said Mr. Crowley. He added that, instead of focusing solely on individual-level choices, the nation should instead work to reframe sexual health as a key aspect of overall physical, mental, and emotional well-being. Doing so could create more opportunities to address structural barriers to STI prevention and ensure that more prevention and screening services are available in stigma-free environments.

“I know what we’re recommending is ambitious, but it’s not too big to be achieved, and we’re not saying tomorrow we’re going to transform the world,” Mr. Crowley concluded. “It’s a puzzle with many pieces, but the long-term impact is really all of these pieces fitting together so that, over time, we can reduce the burden STIs have on the population.”
 

Implications for real-world change

H. Hunter Handsfield, MD, professor emeritus of medicine for the Center for AIDS and STD at the University of Washington, Seattle, said in an interview that this report essentially is a response to evolving societal changes, new and emerging means of social engagement, and increased focus on racial/ethnic disparities. “These features have all come to the forefront of health care and general policy discussions in recent years,” said Dr. Handsfield, who was not part of the committee that developed the NAS report.

Greater scrutiny on public health infrastructure and its relationship with health disparities in the United States makes the publication of these new recommendations especially appropriate during this era of enhanced focus on social justice. Although the report features the tone and quality needed to bolster bipartisan support, said Dr. Handsfield, it’s hard to predict whether such support will come to fruition in today’s political environment.

In terms of the effects the recommendations may have on STI rates, Dr. Handsfield noted that cherry-picking elements from the report to direct policy may result in its having only a trivial impact. “The report is really an appropriate and necessary response, and almost all the recommendations made can be helpful,” he said, “but for true effectiveness, all the elements need to be implemented to drive policy and funding.”

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

Women with Lynch syndrome are known to carry an approximately 60% lifetime risk of endometrial cancer. These cancers result from inherited deleterious mutations in genes that code for mismatch repair proteins. However, mismatch repair deficiency (MMR-d) is not exclusively found in the tumors of patients with Lynch syndrome, and much is being learned about this group of endometrial cancers, their behavior, and their vulnerability to targeted therapies.

During the processes of DNA replication, recombination, or chemical and physical damage, mismatches in base pairs frequently occurs. Mismatch repair proteins function to identify and repair such errors, and the loss of their function causes the accumulation of the insertions or deletions of short, repetitive sequences of DNA. This phenomenon can be measured using polymerase chain reaction (PCR) screening of known microsatellites to look for the accumulation of errors, a phenotype which is called microsatellite instability (MSI). The accumulation of errors in DNA sequences is thought to lead to mutations in cancer-related genes.

The four predominant mismatch repair genes include MLH1, MSH2, MSH 6, and PMS2. These genes may possess loss of function through a germline/inherited mechanism, such as Lynch syndrome, or can be sporadically acquired. Approximately 20%-30% of endometrial cancers exhibit MMR-d with acquired, sporadic losses in function being the majority of cases and only approximately 10% a result of Lynch syndrome. Mutations in PMS2 are the dominant genotype of Lynch syndrome, whereas loss of function in MLH1 is most frequent aberration in sporadic cases of MMR-d endometrial cancer.¹

Endometrial cancers can be tested for MMR-d by performing immunohistochemistry to look for loss of expression in the four most common MMR genes. If there is loss of expression of MLH1, additional triage testing can be performed to determine if this loss is caused by the epigenetic phenomenon of hypermethylation. When present, this excludes Lynch syndrome and suggests a sporadic form origin of the disease. If there is loss of expression of the MMR genes (including loss of MLH1 and subsequent negative testing for promotor methylation), the patient should receive genetic testing for the presence of a germline mutation indicating Lynch syndrome. As an adjunct or alternative to immunohistochemistry, PCR studies or next-generation sequencing can be used to measure the presence of microsatellite instability in a process that identifies the expansion or reduction in repetitive DNA sequences of the tumor, compared with normal tumor.²

It is of the highest importance to identify endometrial cancers caused by Lynch syndrome because this enables providers to offer cascade testing of relatives, and to intensify screening or preventative measures for the many other cancers (such as colon, upper gastrointestinal, breast, and urothelial) for which these patients are at risk. Therefore, routine screening for MMR-d tumors is recommended in all cases of endometrial cancer, not simply those of a young age at diagnosis or for whom a strong family history exists.³ Using family history factors, primary tumor site, and age as a trigger for screening for Lynch syndrome, such as the Bethesda Guidelines, is associated with a 82% sensitivity in identifying Lynch syndrome. In a meta-analysis including testing results from 1,159 women with endometrial cancer, 43% of patients who were diagnosed with Lynch syndrome via molecular analysis would have been missed by clinical screening using Bethesda Guidelines.²

Discovering cases of Lynch syndrome is not the only benefit of routine testing for MMR-d in endometrial cancers. There is also significant value in the characterization of sporadic mismatch repair–deficient tumors because this information provides prognostic information and guides therapy. Tumors with a microsatellite-high phenotype/MMR-d were identified as one of the four distinct molecular subgroups of endometrial cancer by the Cancer Genome Atlas.⁴ Patients with this molecular profile exhibited “intermediate” prognostic outcomes, performing better than the “serous-like” cancers with p53 mutations, yet worse than patients with a POLE ultramutated group who rarely experience recurrences or death, even in the setting of unfavorable histology.

Beyond prognostication, the molecular profile of endometrial cancers also influence their responsiveness to therapeutics, highlighting the importance of splitting, not lumping endometrial cancers into relevant molecular subgroups when designing research and practicing clinical medicine. The PORTEC-3 trial studied 410 women with high-risk endometrial cancer, and randomized participants to receive either adjuvant radiation alone, or radiation with chemotherapy.⁵ There were no differences in progression-free survival between the two therapeutic strategies when analyzed in aggregate. However, when analyzed by Cancer Genome Atlas molecular subgroup, it was noted that there was a clear benefit from chemotherapy for patients with p53 mutations. For patients with MMR-d tumors, no such benefit was observed. Patients assigned this molecular subgroup did no better with the addition of platinum and taxane chemotherapy over radiation alone. Unfortunately, for patients with MMR-d tumors, recurrence rates remained high, suggesting that we can and need to discover more effective therapies for these tumors than what is available with conventional radiation or platinum and taxane chemotherapy. Targeted therapy may be the solution to this problem. Through microsatellite instability, MMR-d tumors create somatic mutations which result in neoantigens, an immunogenic environment. This state up-regulates checkpoint inhibitor proteins, which serve as an actionable target for anti-PD-L1 antibodies, such as the drug pembrolizumab which has been shown to be highly active against MMR-d endometrial cancer. In the landmark, KEYNOTE-158 trial, patients with advanced, recurrent solid tumors that exhibited MMR-d were treated with pembrolizumab.⁶ This included 49 patients with endometrial cancer, among whom there was a 79% response rate. Subsequently, pembrolizumab was granted Food and Drug Administration approval for use in advanced, recurrent MMR-d/MSI-high endometrial cancer. Trials are currently enrolling patients to explore the utility of this drug in the up-front setting in both early- and late-stage disease with a hope that this targeted therapy can do what conventional cytotoxic chemotherapy has failed to do.

Therefore, given the clinical significance of mismatch repair deficiency, all patients with endometrial cancer should be investigated for loss of expression in these proteins, and if present, considered for the possibility of Lynch syndrome. While most will not have an inherited cause, this information regarding their tumor biology remains critically important in both prognostication and decision-making surrounding other therapies and their eligibility for promising clinical trials.

Dr. Rossi is assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill. She has no conflicts of interest to declare. Email her at [email protected].

References

1. Simpkins SB et al. Hum. Mol. Genet. 1999;8:661-6.

2. Kahn R et al. Cancer. 2019 Sep 15;125(18):2172-3183.

3. SGO Clinical Practice Statement: Screening for Lynch Syndrome in Endometrial Cancer. https://www.sgo.org/clinical-practice/guidelines/screening-for-lynch-syndrome-in-endometrial-cancer/

4. Kandoth et al. Nature. 2013;497(7447):67-73.

5. Leon-Castillo A et al. J Clin Oncol. 2020 Oct 10;38(29):3388-97.

6. Marabelle A et al. J Clin Oncol. 2020 Jan 1;38(1):1-10.

Women with Lynch syndrome are known to carry an approximately 60% lifetime risk of endometrial cancer. These cancers result from inherited deleterious mutations in genes that code for mismatch repair proteins. However, mismatch repair deficiency (MMR-d) is not exclusively found in the tumors of patients with Lynch syndrome, and much is being learned about this group of endometrial cancers, their behavior, and their vulnerability to targeted therapies.

During the processes of DNA replication, recombination, or chemical and physical damage, mismatches in base pairs frequently occurs. Mismatch repair proteins function to identify and repair such errors, and the loss of their function causes the accumulation of the insertions or deletions of short, repetitive sequences of DNA. This phenomenon can be measured using polymerase chain reaction (PCR) screening of known microsatellites to look for the accumulation of errors, a phenotype which is called microsatellite instability (MSI). The accumulation of errors in DNA sequences is thought to lead to mutations in cancer-related genes.

The four predominant mismatch repair genes include MLH1, MSH2, MSH 6, and PMS2. These genes may possess loss of function through a germline/inherited mechanism, such as Lynch syndrome, or can be sporadically acquired. Approximately 20%-30% of endometrial cancers exhibit MMR-d with acquired, sporadic losses in function being the majority of cases and only approximately 10% a result of Lynch syndrome. Mutations in PMS2 are the dominant genotype of Lynch syndrome, whereas loss of function in MLH1 is most frequent aberration in sporadic cases of MMR-d endometrial cancer.¹

Endometrial cancers can be tested for MMR-d by performing immunohistochemistry to look for loss of expression in the four most common MMR genes. If there is loss of expression of MLH1, additional triage testing can be performed to determine if this loss is caused by the epigenetic phenomenon of hypermethylation. When present, this excludes Lynch syndrome and suggests a sporadic form origin of the disease. If there is loss of expression of the MMR genes (including loss of MLH1 and subsequent negative testing for promotor methylation), the patient should receive genetic testing for the presence of a germline mutation indicating Lynch syndrome. As an adjunct or alternative to immunohistochemistry, PCR studies or next-generation sequencing can be used to measure the presence of microsatellite instability in a process that identifies the expansion or reduction in repetitive DNA sequences of the tumor, compared with normal tumor.²

It is of the highest importance to identify endometrial cancers caused by Lynch syndrome because this enables providers to offer cascade testing of relatives, and to intensify screening or preventative measures for the many other cancers (such as colon, upper gastrointestinal, breast, and urothelial) for which these patients are at risk. Therefore, routine screening for MMR-d tumors is recommended in all cases of endometrial cancer, not simply those of a young age at diagnosis or for whom a strong family history exists.³ Using family history factors, primary tumor site, and age as a trigger for screening for Lynch syndrome, such as the Bethesda Guidelines, is associated with a 82% sensitivity in identifying Lynch syndrome. In a meta-analysis including testing results from 1,159 women with endometrial cancer, 43% of patients who were diagnosed with Lynch syndrome via molecular analysis would have been missed by clinical screening using Bethesda Guidelines.²

Discovering cases of Lynch syndrome is not the only benefit of routine testing for MMR-d in endometrial cancers. There is also significant value in the characterization of sporadic mismatch repair–deficient tumors because this information provides prognostic information and guides therapy. Tumors with a microsatellite-high phenotype/MMR-d were identified as one of the four distinct molecular subgroups of endometrial cancer by the Cancer Genome Atlas.⁴ Patients with this molecular profile exhibited “intermediate” prognostic outcomes, performing better than the “serous-like” cancers with p53 mutations, yet worse than patients with a POLE ultramutated group who rarely experience recurrences or death, even in the setting of unfavorable histology.

Beyond prognostication, the molecular profile of endometrial cancers also influence their responsiveness to therapeutics, highlighting the importance of splitting, not lumping endometrial cancers into relevant molecular subgroups when designing research and practicing clinical medicine. The PORTEC-3 trial studied 410 women with high-risk endometrial cancer, and randomized participants to receive either adjuvant radiation alone, or radiation with chemotherapy.⁵ There were no differences in progression-free survival between the two therapeutic strategies when analyzed in aggregate. However, when analyzed by Cancer Genome Atlas molecular subgroup, it was noted that there was a clear benefit from chemotherapy for patients with p53 mutations. For patients with MMR-d tumors, no such benefit was observed. Patients assigned this molecular subgroup did no better with the addition of platinum and taxane chemotherapy over radiation alone. Unfortunately, for patients with MMR-d tumors, recurrence rates remained high, suggesting that we can and need to discover more effective therapies for these tumors than what is available with conventional radiation or platinum and taxane chemotherapy. Targeted therapy may be the solution to this problem. Through microsatellite instability, MMR-d tumors create somatic mutations which result in neoantigens, an immunogenic environment. This state up-regulates checkpoint inhibitor proteins, which serve as an actionable target for anti-PD-L1 antibodies, such as the drug pembrolizumab which has been shown to be highly active against MMR-d endometrial cancer. In the landmark, KEYNOTE-158 trial, patients with advanced, recurrent solid tumors that exhibited MMR-d were treated with pembrolizumab.⁶ This included 49 patients with endometrial cancer, among whom there was a 79% response rate. Subsequently, pembrolizumab was granted Food and Drug Administration approval for use in advanced, recurrent MMR-d/MSI-high endometrial cancer. Trials are currently enrolling patients to explore the utility of this drug in the up-front setting in both early- and late-stage disease with a hope that this targeted therapy can do what conventional cytotoxic chemotherapy has failed to do.

Therefore, given the clinical significance of mismatch repair deficiency, all patients with endometrial cancer should be investigated for loss of expression in these proteins, and if present, considered for the possibility of Lynch syndrome. While most will not have an inherited cause, this information regarding their tumor biology remains critically important in both prognostication and decision-making surrounding other therapies and their eligibility for promising clinical trials.

Dr. Rossi is assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill. She has no conflicts of interest to declare. Email her at [email protected].

References

1. Simpkins SB et al. Hum. Mol. Genet. 1999;8:661-6.

2. Kahn R et al. Cancer. 2019 Sep 15;125(18):2172-3183.

3. SGO Clinical Practice Statement: Screening for Lynch Syndrome in Endometrial Cancer. https://www.sgo.org/clinical-practice/guidelines/screening-for-lynch-syndrome-in-endometrial-cancer/

4. Kandoth et al. Nature. 2013;497(7447):67-73.

5. Leon-Castillo A et al. J Clin Oncol. 2020 Oct 10;38(29):3388-97.

6. Marabelle A et al. J Clin Oncol. 2020 Jan 1;38(1):1-10.

Women with Lynch syndrome are known to carry an approximately 60% lifetime risk of endometrial cancer. These cancers result from inherited deleterious mutations in genes that code for mismatch repair proteins. However, mismatch repair deficiency (MMR-d) is not exclusively found in the tumors of patients with Lynch syndrome, and much is being learned about this group of endometrial cancers, their behavior, and their vulnerability to targeted therapies.

During the processes of DNA replication, recombination, or chemical and physical damage, mismatches in base pairs frequently occurs. Mismatch repair proteins function to identify and repair such errors, and the loss of their function causes the accumulation of the insertions or deletions of short, repetitive sequences of DNA. This phenomenon can be measured using polymerase chain reaction (PCR) screening of known microsatellites to look for the accumulation of errors, a phenotype which is called microsatellite instability (MSI). The accumulation of errors in DNA sequences is thought to lead to mutations in cancer-related genes.

The four predominant mismatch repair genes include MLH1, MSH2, MSH 6, and PMS2. These genes may possess loss of function through a germline/inherited mechanism, such as Lynch syndrome, or can be sporadically acquired. Approximately 20%-30% of endometrial cancers exhibit MMR-d with acquired, sporadic losses in function being the majority of cases and only approximately 10% a result of Lynch syndrome. Mutations in PMS2 are the dominant genotype of Lynch syndrome, whereas loss of function in MLH1 is most frequent aberration in sporadic cases of MMR-d endometrial cancer.¹

Endometrial cancers can be tested for MMR-d by performing immunohistochemistry to look for loss of expression in the four most common MMR genes. If there is loss of expression of MLH1, additional triage testing can be performed to determine if this loss is caused by the epigenetic phenomenon of hypermethylation. When present, this excludes Lynch syndrome and suggests a sporadic form origin of the disease. If there is loss of expression of the MMR genes (including loss of MLH1 and subsequent negative testing for promotor methylation), the patient should receive genetic testing for the presence of a germline mutation indicating Lynch syndrome. As an adjunct or alternative to immunohistochemistry, PCR studies or next-generation sequencing can be used to measure the presence of microsatellite instability in a process that identifies the expansion or reduction in repetitive DNA sequences of the tumor, compared with normal tumor.²

It is of the highest importance to identify endometrial cancers caused by Lynch syndrome because this enables providers to offer cascade testing of relatives, and to intensify screening or preventative measures for the many other cancers (such as colon, upper gastrointestinal, breast, and urothelial) for which these patients are at risk. Therefore, routine screening for MMR-d tumors is recommended in all cases of endometrial cancer, not simply those of a young age at diagnosis or for whom a strong family history exists.³ Using family history factors, primary tumor site, and age as a trigger for screening for Lynch syndrome, such as the Bethesda Guidelines, is associated with a 82% sensitivity in identifying Lynch syndrome. In a meta-analysis including testing results from 1,159 women with endometrial cancer, 43% of patients who were diagnosed with Lynch syndrome via molecular analysis would have been missed by clinical screening using Bethesda Guidelines.²

Discovering cases of Lynch syndrome is not the only benefit of routine testing for MMR-d in endometrial cancers. There is also significant value in the characterization of sporadic mismatch repair–deficient tumors because this information provides prognostic information and guides therapy. Tumors with a microsatellite-high phenotype/MMR-d were identified as one of the four distinct molecular subgroups of endometrial cancer by the Cancer Genome Atlas.⁴ Patients with this molecular profile exhibited “intermediate” prognostic outcomes, performing better than the “serous-like” cancers with p53 mutations, yet worse than patients with a POLE ultramutated group who rarely experience recurrences or death, even in the setting of unfavorable histology.

Beyond prognostication, the molecular profile of endometrial cancers also influence their responsiveness to therapeutics, highlighting the importance of splitting, not lumping endometrial cancers into relevant molecular subgroups when designing research and practicing clinical medicine. The PORTEC-3 trial studied 410 women with high-risk endometrial cancer, and randomized participants to receive either adjuvant radiation alone, or radiation with chemotherapy.⁵ There were no differences in progression-free survival between the two therapeutic strategies when analyzed in aggregate. However, when analyzed by Cancer Genome Atlas molecular subgroup, it was noted that there was a clear benefit from chemotherapy for patients with p53 mutations. For patients with MMR-d tumors, no such benefit was observed. Patients assigned this molecular subgroup did no better with the addition of platinum and taxane chemotherapy over radiation alone. Unfortunately, for patients with MMR-d tumors, recurrence rates remained high, suggesting that we can and need to discover more effective therapies for these tumors than what is available with conventional radiation or platinum and taxane chemotherapy. Targeted therapy may be the solution to this problem. Through microsatellite instability, MMR-d tumors create somatic mutations which result in neoantigens, an immunogenic environment. This state up-regulates checkpoint inhibitor proteins, which serve as an actionable target for anti-PD-L1 antibodies, such as the drug pembrolizumab which has been shown to be highly active against MMR-d endometrial cancer. In the landmark, KEYNOTE-158 trial, patients with advanced, recurrent solid tumors that exhibited MMR-d were treated with pembrolizumab.⁶ This included 49 patients with endometrial cancer, among whom there was a 79% response rate. Subsequently, pembrolizumab was granted Food and Drug Administration approval for use in advanced, recurrent MMR-d/MSI-high endometrial cancer. Trials are currently enrolling patients to explore the utility of this drug in the up-front setting in both early- and late-stage disease with a hope that this targeted therapy can do what conventional cytotoxic chemotherapy has failed to do.

Therefore, given the clinical significance of mismatch repair deficiency, all patients with endometrial cancer should be investigated for loss of expression in these proteins, and if present, considered for the possibility of Lynch syndrome. While most will not have an inherited cause, this information regarding their tumor biology remains critically important in both prognostication and decision-making surrounding other therapies and their eligibility for promising clinical trials.

Dr. Rossi is assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill. She has no conflicts of interest to declare. Email her at [email protected].

References

1. Simpkins SB et al. Hum. Mol. Genet. 1999;8:661-6.

2. Kahn R et al. Cancer. 2019 Sep 15;125(18):2172-3183.

3. SGO Clinical Practice Statement: Screening for Lynch Syndrome in Endometrial Cancer. https://www.sgo.org/clinical-practice/guidelines/screening-for-lynch-syndrome-in-endometrial-cancer/

4. Kandoth et al. Nature. 2013;497(7447):67-73.

5. Leon-Castillo A et al. J Clin Oncol. 2020 Oct 10;38(29):3388-97.

6. Marabelle A et al. J Clin Oncol. 2020 Jan 1;38(1):1-10.

Study Overview

Objective. To evaluate the efficacy and safety of lenvatinib in combination with everolimus or pembrolizumab compared with sunitinib alone for the treatment of newly diagnosed advanced clear cell renal cell carcinoma (ccRCC).

Design. Global, multicenter, randomized, open-label, phase 3 trial.

Intervention. Patients were randomized in a 1:1:1 ratio to receive treatment with 1 of 3 regimens: lenvatinib 20 mg daily plus pembrolizumab 200 mg on day 1 of each 21-day cycle; lenvatinib 18 mg daily plus everolimus 5 mg once daily for each 21-day cycle; or sunitinib 50 mg daily for 4 weeks followed by 2 weeks off. Patients were stratified according to geographic region and Memorial Sloan Kettering Cancer Center (MSKCC) prognostic risk group.

Setting and participants. A total of 1417 patients were screened, and 1069 patients underwent randomization between October 2016 and July 2019: 355 patients were randomized to the lenvatinib plus pembrolizumab group, 357 were randomized to the lenvatinib plus everolimus group, and 357 were randomized to the sunitinib alone group. The patients must have had a diagnosis of previously untreated advanced renal cell carcinoma with a clear-cell component. All the patients need to have a Karnofsky performance status of at least 70, adequate renal function, and controlled blood pressure with or without antihypertensive medications.

Main outcome measures. The primary endpoint assessed the progression-free survival (PFS) as evaluated by independent review committee using RECIST, version 1.1. Imaging was performed at the time of screening and every 8 weeks thereafter. Secondary endpoints were safety, overall survival (OS), and objective response rate as well as investigator-assessed PFS. Also, they assessed the duration of response. During the treatment period, the safety and adverse events were assessed up to 30 days from the last dose of the trial drug.

Main results. The baseline characteristics were well balanced between the treatment groups. More than 70% of enrolled participants were male. Approximately 60% of participants were MSKCC intermediate risk, 27% were favorable risk, and 9% were poor risk. Patients with a PD-L1 combined positive score of 1% or more represented 30% of the population. The remainder had a PD-L1 combined positive score of <1% (30%) or such data were not available (38%). Liver metastases were present in 17% of patients at baseline in each group, and 70% of patients had a prior nephrectomy. The data cutoff occurred in August 2020 for PFS and the median follow-up for OS was 26.6 months. Around 40% of the participants in the lenvatinib plus pembrolizumab group, 18.8% in the sunitinib group, and 31% in the lenvatinib plus everolimus group were still receiving trial treatment at data cutoff. The leading cause for discontinuing therapy was disease progression. Approximately 50% of patients in the lenvatinib/everolimus group and sunitinib group received subsequent checkpoint inhibitor therapy after progression.

The median PFS in the lenvatinib plus pembrolizumab group was significantly longer than in the sunitinib group, 23.9 months vs 9.2 months (hazard ratio [HR], 0.39; 95% CI, 0.32-0.49; P < 0.001). The median PFS was also significantly longer in the lenvatinib plus everolimus group compared with sunitinib, 14.7 vs 9.2 months (HR 0.65; 95% CI 0.53-0.80; P < 0.001). The PFS benefit favored the lenvatinib combination groups over sunitinib in all subgroups, including the MSKCC prognostic risk groups. The median OS was not reached with any treatment, with 79% of patients in the lenvatinib plus pembrolizumab group, 66% of patients in the lenvatinib plus everolimus group, and 70% in the sunitinib group still alive at 24 months. Survival was significantly longer in the lenvatinib plus pembrolizumab group compared with sunitinib (HR, 0.66; 95% CI, 0.49-0.88; P = 0.005). The OS favored lenvatinib/pembrolizumab over sunitinib in the PD-L1 positive or negative groups. The median duration of response in the lenvatinib plus pembrolizumab group was 25.8 months compared to 16.6 months and 14.6 months in the lenvatinib plus everolimus and sunitinib groups, respectively. Complete response rates were higher in the lenvatinib plus pembrolizumab group (16%) compared with lenvatinib/everolimus (9.8%) or sunitinib (4.2%). The median time to response was around 1.9 months in all 3 groups.

The most frequent adverse events seen in all groups were diarrhea, hypertension, fatigue, and nausea. Hypothyroidism was seen more frequently in the lenvatinib plus pembrolizumab group (47%). Grade 3 adverse events were seen in approximately 80% of patients in all groups. The most common grade 3 or higher adverse event was hypertension in all 3 groups. The median time for discontinuing treatment due to side effects was 8.97 months in the lenvatinib plus pembrolizumab arm, 5.49 months in the lenvatinib plus everolimus group, and 4.57 months in the sunitinib group. In the lenvatinib plus pembrolizumab group, 15 patients had grade 5 adverse events; 11 participants had fatal events not related to disease progression. In the lenvatinib plus everolimus group, there were 22 patients with grade 5 events, with 10 fatal events not related to disease progression. In the sunitinib group, 11 patients had grade 5 events, and only 2 fatal events were not linked to disease progression.

Conclusion. The combination of lenvatinib plus pembrolizumab significantly prolongs PFS and OS compared with sunitinib in patients with previously untreated and advanced ccRCC. The median OS has not yet been reached.

Commentary

The results of the current phase 3 CLEAR trial highlight the efficacy and safety of lenvatinib plus pembrolizumab as a first-line treatment in advanced ccRCC. This trial adds to the rapidly growing body of literature supporting the notion that the combination of anti-PD-1 based therapy with either CTLA-4 antibodies or VEGF receptor tyrosine kinase inhibitors (TKI) improves outcomes in previously untreated patients with advanced ccRCC. Previously presented data from Keynote-426 (pembrolizumab plus axitinib), Checkmate-214 (nivolumab plus ipilimumab), and Javelin Renal 101 (Avelumab plus axitinib) have also shown improved outcomes with combination therapy in the frontline setting.^1-4 While the landscape of therapeutic options in the frontline setting continues to grow, there remains lack of clarity as to how to tailor our therapeutic decisions for specific patient populations. The exception would be nivolumab and ipilimumab, which are currently indicated for IMDC intermediate- or poor-risk patients.

The combination of VEGFR TKI therapy and PD-1 antibodies provides rapid disease control, with a median time to response in the current study of 1.9 months, and, generally speaking, a low risk of progression in the first 6 months of therapy. While cross-trial comparisons are always problematic, the PFS reported in this study and others with VEGFR TKI and PD-1 antibody combinations is quite impressive and surpasses that noted in Checkmate 214.³ While the median OS survival has not yet been reached, the long duration of PFS and complete response rate of 16% in this study certainly make this an attractive frontline option for newly diagnosed patients with advanced ccRCC. Longer follow-up is needed to confirm the survival benefit noted.

Applications for Clinical Practice

The current data support the use VEGFR TKI and anti-PD1 therapy in the frontline setting. How to choose between such combination regimens or combination immunotherapy remains unclear, and further biomarker-based assessments are needed to help guide therapeutic decisions for our patients.

Study Overview

Objective. To evaluate the efficacy and safety of lenvatinib in combination with everolimus or pembrolizumab compared with sunitinib alone for the treatment of newly diagnosed advanced clear cell renal cell carcinoma (ccRCC).

Design. Global, multicenter, randomized, open-label, phase 3 trial.

Intervention. Patients were randomized in a 1:1:1 ratio to receive treatment with 1 of 3 regimens: lenvatinib 20 mg daily plus pembrolizumab 200 mg on day 1 of each 21-day cycle; lenvatinib 18 mg daily plus everolimus 5 mg once daily for each 21-day cycle; or sunitinib 50 mg daily for 4 weeks followed by 2 weeks off. Patients were stratified according to geographic region and Memorial Sloan Kettering Cancer Center (MSKCC) prognostic risk group.

Setting and participants. A total of 1417 patients were screened, and 1069 patients underwent randomization between October 2016 and July 2019: 355 patients were randomized to the lenvatinib plus pembrolizumab group, 357 were randomized to the lenvatinib plus everolimus group, and 357 were randomized to the sunitinib alone group. The patients must have had a diagnosis of previously untreated advanced renal cell carcinoma with a clear-cell component. All the patients need to have a Karnofsky performance status of at least 70, adequate renal function, and controlled blood pressure with or without antihypertensive medications.

Main outcome measures. The primary endpoint assessed the progression-free survival (PFS) as evaluated by independent review committee using RECIST, version 1.1. Imaging was performed at the time of screening and every 8 weeks thereafter. Secondary endpoints were safety, overall survival (OS), and objective response rate as well as investigator-assessed PFS. Also, they assessed the duration of response. During the treatment period, the safety and adverse events were assessed up to 30 days from the last dose of the trial drug.

Main results. The baseline characteristics were well balanced between the treatment groups. More than 70% of enrolled participants were male. Approximately 60% of participants were MSKCC intermediate risk, 27% were favorable risk, and 9% were poor risk. Patients with a PD-L1 combined positive score of 1% or more represented 30% of the population. The remainder had a PD-L1 combined positive score of <1% (30%) or such data were not available (38%). Liver metastases were present in 17% of patients at baseline in each group, and 70% of patients had a prior nephrectomy. The data cutoff occurred in August 2020 for PFS and the median follow-up for OS was 26.6 months. Around 40% of the participants in the lenvatinib plus pembrolizumab group, 18.8% in the sunitinib group, and 31% in the lenvatinib plus everolimus group were still receiving trial treatment at data cutoff. The leading cause for discontinuing therapy was disease progression. Approximately 50% of patients in the lenvatinib/everolimus group and sunitinib group received subsequent checkpoint inhibitor therapy after progression.

The median PFS in the lenvatinib plus pembrolizumab group was significantly longer than in the sunitinib group, 23.9 months vs 9.2 months (hazard ratio [HR], 0.39; 95% CI, 0.32-0.49; P < 0.001). The median PFS was also significantly longer in the lenvatinib plus everolimus group compared with sunitinib, 14.7 vs 9.2 months (HR 0.65; 95% CI 0.53-0.80; P < 0.001). The PFS benefit favored the lenvatinib combination groups over sunitinib in all subgroups, including the MSKCC prognostic risk groups. The median OS was not reached with any treatment, with 79% of patients in the lenvatinib plus pembrolizumab group, 66% of patients in the lenvatinib plus everolimus group, and 70% in the sunitinib group still alive at 24 months. Survival was significantly longer in the lenvatinib plus pembrolizumab group compared with sunitinib (HR, 0.66; 95% CI, 0.49-0.88; P = 0.005). The OS favored lenvatinib/pembrolizumab over sunitinib in the PD-L1 positive or negative groups. The median duration of response in the lenvatinib plus pembrolizumab group was 25.8 months compared to 16.6 months and 14.6 months in the lenvatinib plus everolimus and sunitinib groups, respectively. Complete response rates were higher in the lenvatinib plus pembrolizumab group (16%) compared with lenvatinib/everolimus (9.8%) or sunitinib (4.2%). The median time to response was around 1.9 months in all 3 groups.

The most frequent adverse events seen in all groups were diarrhea, hypertension, fatigue, and nausea. Hypothyroidism was seen more frequently in the lenvatinib plus pembrolizumab group (47%). Grade 3 adverse events were seen in approximately 80% of patients in all groups. The most common grade 3 or higher adverse event was hypertension in all 3 groups. The median time for discontinuing treatment due to side effects was 8.97 months in the lenvatinib plus pembrolizumab arm, 5.49 months in the lenvatinib plus everolimus group, and 4.57 months in the sunitinib group. In the lenvatinib plus pembrolizumab group, 15 patients had grade 5 adverse events; 11 participants had fatal events not related to disease progression. In the lenvatinib plus everolimus group, there were 22 patients with grade 5 events, with 10 fatal events not related to disease progression. In the sunitinib group, 11 patients had grade 5 events, and only 2 fatal events were not linked to disease progression.

Conclusion. The combination of lenvatinib plus pembrolizumab significantly prolongs PFS and OS compared with sunitinib in patients with previously untreated and advanced ccRCC. The median OS has not yet been reached.

Commentary

The results of the current phase 3 CLEAR trial highlight the efficacy and safety of lenvatinib plus pembrolizumab as a first-line treatment in advanced ccRCC. This trial adds to the rapidly growing body of literature supporting the notion that the combination of anti-PD-1 based therapy with either CTLA-4 antibodies or VEGF receptor tyrosine kinase inhibitors (TKI) improves outcomes in previously untreated patients with advanced ccRCC. Previously presented data from Keynote-426 (pembrolizumab plus axitinib), Checkmate-214 (nivolumab plus ipilimumab), and Javelin Renal 101 (Avelumab plus axitinib) have also shown improved outcomes with combination therapy in the frontline setting.^1-4 While the landscape of therapeutic options in the frontline setting continues to grow, there remains lack of clarity as to how to tailor our therapeutic decisions for specific patient populations. The exception would be nivolumab and ipilimumab, which are currently indicated for IMDC intermediate- or poor-risk patients.

The combination of VEGFR TKI therapy and PD-1 antibodies provides rapid disease control, with a median time to response in the current study of 1.9 months, and, generally speaking, a low risk of progression in the first 6 months of therapy. While cross-trial comparisons are always problematic, the PFS reported in this study and others with VEGFR TKI and PD-1 antibody combinations is quite impressive and surpasses that noted in Checkmate 214.³ While the median OS survival has not yet been reached, the long duration of PFS and complete response rate of 16% in this study certainly make this an attractive frontline option for newly diagnosed patients with advanced ccRCC. Longer follow-up is needed to confirm the survival benefit noted.

Applications for Clinical Practice

The current data support the use VEGFR TKI and anti-PD1 therapy in the frontline setting. How to choose between such combination regimens or combination immunotherapy remains unclear, and further biomarker-based assessments are needed to help guide therapeutic decisions for our patients.

Study Overview

Objective. To evaluate the efficacy and safety of lenvatinib in combination with everolimus or pembrolizumab compared with sunitinib alone for the treatment of newly diagnosed advanced clear cell renal cell carcinoma (ccRCC).

Design. Global, multicenter, randomized, open-label, phase 3 trial.

Intervention. Patients were randomized in a 1:1:1 ratio to receive treatment with 1 of 3 regimens: lenvatinib 20 mg daily plus pembrolizumab 200 mg on day 1 of each 21-day cycle; lenvatinib 18 mg daily plus everolimus 5 mg once daily for each 21-day cycle; or sunitinib 50 mg daily for 4 weeks followed by 2 weeks off. Patients were stratified according to geographic region and Memorial Sloan Kettering Cancer Center (MSKCC) prognostic risk group.

Setting and participants. A total of 1417 patients were screened, and 1069 patients underwent randomization between October 2016 and July 2019: 355 patients were randomized to the lenvatinib plus pembrolizumab group, 357 were randomized to the lenvatinib plus everolimus group, and 357 were randomized to the sunitinib alone group. The patients must have had a diagnosis of previously untreated advanced renal cell carcinoma with a clear-cell component. All the patients need to have a Karnofsky performance status of at least 70, adequate renal function, and controlled blood pressure with or without antihypertensive medications.

Main outcome measures. The primary endpoint assessed the progression-free survival (PFS) as evaluated by independent review committee using RECIST, version 1.1. Imaging was performed at the time of screening and every 8 weeks thereafter. Secondary endpoints were safety, overall survival (OS), and objective response rate as well as investigator-assessed PFS. Also, they assessed the duration of response. During the treatment period, the safety and adverse events were assessed up to 30 days from the last dose of the trial drug.

Main results. The baseline characteristics were well balanced between the treatment groups. More than 70% of enrolled participants were male. Approximately 60% of participants were MSKCC intermediate risk, 27% were favorable risk, and 9% were poor risk. Patients with a PD-L1 combined positive score of 1% or more represented 30% of the population. The remainder had a PD-L1 combined positive score of <1% (30%) or such data were not available (38%). Liver metastases were present in 17% of patients at baseline in each group, and 70% of patients had a prior nephrectomy. The data cutoff occurred in August 2020 for PFS and the median follow-up for OS was 26.6 months. Around 40% of the participants in the lenvatinib plus pembrolizumab group, 18.8% in the sunitinib group, and 31% in the lenvatinib plus everolimus group were still receiving trial treatment at data cutoff. The leading cause for discontinuing therapy was disease progression. Approximately 50% of patients in the lenvatinib/everolimus group and sunitinib group received subsequent checkpoint inhibitor therapy after progression.

The median PFS in the lenvatinib plus pembrolizumab group was significantly longer than in the sunitinib group, 23.9 months vs 9.2 months (hazard ratio [HR], 0.39; 95% CI, 0.32-0.49; P < 0.001). The median PFS was also significantly longer in the lenvatinib plus everolimus group compared with sunitinib, 14.7 vs 9.2 months (HR 0.65; 95% CI 0.53-0.80; P < 0.001). The PFS benefit favored the lenvatinib combination groups over sunitinib in all subgroups, including the MSKCC prognostic risk groups. The median OS was not reached with any treatment, with 79% of patients in the lenvatinib plus pembrolizumab group, 66% of patients in the lenvatinib plus everolimus group, and 70% in the sunitinib group still alive at 24 months. Survival was significantly longer in the lenvatinib plus pembrolizumab group compared with sunitinib (HR, 0.66; 95% CI, 0.49-0.88; P = 0.005). The OS favored lenvatinib/pembrolizumab over sunitinib in the PD-L1 positive or negative groups. The median duration of response in the lenvatinib plus pembrolizumab group was 25.8 months compared to 16.6 months and 14.6 months in the lenvatinib plus everolimus and sunitinib groups, respectively. Complete response rates were higher in the lenvatinib plus pembrolizumab group (16%) compared with lenvatinib/everolimus (9.8%) or sunitinib (4.2%). The median time to response was around 1.9 months in all 3 groups.

The most frequent adverse events seen in all groups were diarrhea, hypertension, fatigue, and nausea. Hypothyroidism was seen more frequently in the lenvatinib plus pembrolizumab group (47%). Grade 3 adverse events were seen in approximately 80% of patients in all groups. The most common grade 3 or higher adverse event was hypertension in all 3 groups. The median time for discontinuing treatment due to side effects was 8.97 months in the lenvatinib plus pembrolizumab arm, 5.49 months in the lenvatinib plus everolimus group, and 4.57 months in the sunitinib group. In the lenvatinib plus pembrolizumab group, 15 patients had grade 5 adverse events; 11 participants had fatal events not related to disease progression. In the lenvatinib plus everolimus group, there were 22 patients with grade 5 events, with 10 fatal events not related to disease progression. In the sunitinib group, 11 patients had grade 5 events, and only 2 fatal events were not linked to disease progression.

Conclusion. The combination of lenvatinib plus pembrolizumab significantly prolongs PFS and OS compared with sunitinib in patients with previously untreated and advanced ccRCC. The median OS has not yet been reached.

Commentary

The results of the current phase 3 CLEAR trial highlight the efficacy and safety of lenvatinib plus pembrolizumab as a first-line treatment in advanced ccRCC. This trial adds to the rapidly growing body of literature supporting the notion that the combination of anti-PD-1 based therapy with either CTLA-4 antibodies or VEGF receptor tyrosine kinase inhibitors (TKI) improves outcomes in previously untreated patients with advanced ccRCC. Previously presented data from Keynote-426 (pembrolizumab plus axitinib), Checkmate-214 (nivolumab plus ipilimumab), and Javelin Renal 101 (Avelumab plus axitinib) have also shown improved outcomes with combination therapy in the frontline setting.^1-4 While the landscape of therapeutic options in the frontline setting continues to grow, there remains lack of clarity as to how to tailor our therapeutic decisions for specific patient populations. The exception would be nivolumab and ipilimumab, which are currently indicated for IMDC intermediate- or poor-risk patients.

The combination of VEGFR TKI therapy and PD-1 antibodies provides rapid disease control, with a median time to response in the current study of 1.9 months, and, generally speaking, a low risk of progression in the first 6 months of therapy. While cross-trial comparisons are always problematic, the PFS reported in this study and others with VEGFR TKI and PD-1 antibody combinations is quite impressive and surpasses that noted in Checkmate 214.³ While the median OS survival has not yet been reached, the long duration of PFS and complete response rate of 16% in this study certainly make this an attractive frontline option for newly diagnosed patients with advanced ccRCC. Longer follow-up is needed to confirm the survival benefit noted.

Applications for Clinical Practice

The current data support the use VEGFR TKI and anti-PD1 therapy in the frontline setting. How to choose between such combination regimens or combination immunotherapy remains unclear, and further biomarker-based assessments are needed to help guide therapeutic decisions for our patients.

From Baylor College of Medicine, Houston, TX (Drs. Spezia-Lindner, Montealegre, Muldrew, and Suarez) and Harris Health System, Houston, TX (Shanna L. Harris, Maria Daheri, and Drs. Muldrew and Suarez).

Abstract

Objective: To characterize and analyze the prevalence, indications for, and outcomes of fecal immunochemical testing (FIT) in acute patient care within a safety net health care system’s emergency departments (EDs) and inpatient settings.

Design: Retrospective cohort study derived from administrative data.

Setting: A large, urban, safety net health care delivery system in Texas. The data gathered were from the health care system’s 2 primary hospitals and their associated EDs. This health care system utilizes FIT exclusively for fecal occult blood testing.

Participants: Adults ≥18 years who underwent FIT in the ED or inpatient setting between August 2016 and March 2017. Chart review abstractions were performed on a sample (n = 382) from the larger subset.

Measurements: Primary data points included total FITs performed in acute patient care during the study period, basic demographic data, FIT indications, FIT result, receipt of invasive diagnostic follow-up, and result of invasive diagnostic follow-up. Multivariable log-binomial regression was used to calculate risk ratios (RRs) to assess the association between FIT result and receipt of diagnostic follow-up. Chi-square analysis was used to compare the proportion of abnormal findings on diagnostic follow-up by FIT result.

Results: During the 8-month study period, 2718 FITs were performed in the ED and inpatient setting, comprising 5.7% of system-wide FITs. Of the 382 patients included in the chart review who underwent acute care FIT, a majority had their test performed in the ED (304, 79.6%), 133 of which were positive (34.8%). The most common indication for FIT was evidence of overt gastrointestinal (GI) bleed (207, 54.2%), followed by anemia (84, 22.0%). While a positive FIT result was significantly associated with obtaining a diagnostic exam in multivariate analysis (RR, 1.72; P < 0.001), having signs of overt GI bleeding was a stronger predictor of diagnostic follow-up (RR, 2.00; P = 0.003). Of patients who underwent FIT and received diagnostic follow-up (n = 110), 48.2% were FIT negative. These patients were just as likely to have an abnormal finding as FIT-positive patients (90.6% vs 91.2%; P = 0.86). Of the 382 patients in the study, 4 (1.0%) were subsequently diagnosed with colorectal cancer (CRC). Of those 4 patients, 1 (25%) was FIT positive.

Conclusion: FIT is being utilized in acute patient care outside of its established indication for CRC screening in asymptomatic, average-risk adults. Our study demonstrates that FIT is not useful in acute patient care.

Keywords: FOBT; FIT; fecal immunochemical testing; inpatient.

Despite the exclusive validation of FOBTs for use in CRC screening, studies have demonstrated that they are commonly used for a multitude of additional indications in emergency department (ED) and inpatient settings, most aimed at detecting or confirming GI blood loss. This may lead to inappropriate patient management, including the receipt of unnecessary follow-up procedures, which can incur significant costs to the patient and the health system.^13-19 These costs may be particularly burdensome in safety net health systems (ie, those that offer access to care regardless of the patient’s ability to pay), which serve a large proportion of socioeconomically disadvantaged individuals in the United States.^20,21 To our knowledge, no published study to date has specifically investigated the role of FIT in acute patient management.

This study characterizes the use of FIT in acute patient care within a large, urban, safety net health care system. Through a retrospective review of administrative data and patient charts, we evaluated FIT use prevalence, indications, and patient outcomes in the ED and inpatient settings.

Methods

Setting

This study was conducted in a large, urban, county-based integrated delivery system in Houston, Texas, that provides health care services to one of the largest uninsured and underinsured populations in the country.²² The health system includes 2 main hospitals and more than 20 ambulatory care clinics. Within its ambulatory care clinics, the health system implements a population-based screening strategy using stool-based testing. All adults aged 50 years or older who are due for FIT are identified through the health-maintenance module of the electronic medical record (EMR) and offered a take-home FIT. The health system utilizes FIT exclusively (OC-Light S FIT, Polymedco, Cortlandt Manor, NY); no guaiac-based assays are available.

Design and Data Collection

We began by using administrative records to determine the proportion of FITs conducted health system-wide that were ordered and completed in the acute care setting over the study period (August 2016-March 2017). Specifically, we used aggregate quality metric reports, which quantify the number of FITs conducted at each health system clinic and hospital each month, to calculate the proportion of FITs done in the ED and inpatient hospital setting.

We then conducted a retrospective cohort study of 382 adult patients who received FIT in the EDs and inpatient wards in both of the health system’s hospitals over the study period. All data were collected by retrospective chart review in Epic (Madison, WI) EMRs. Sampling was performed by selecting the medical record numbers corresponding to the first 50 completed FITs chronologically each month over the 8-month period, with a total of 400 charts reviewed.

Data collected included basic patient demographics, location of FIT ordering (ED vs inpatient), primary service ordering FIT, FIT indication, FIT result, and receipt and results of invasive diagnostic follow-up. Demographics collected included age, biological sex, race (self-selected), and insurance coverage.

FIT indication was determined based on resident or attending physician notes. The history of present illness, physical exam, and assessment and plan section of notes were reviewed by the lead author for a specific statement of indication for FIT or for evidence of clinical presentation for which FIT could reasonably be ordered. Indications were iteratively reviewed and collapsed into 6 different categories: anemia, iron deficiency with or without anemia, overt GIB, suspected GIB/miscellaneous, non-bloody diarrhea, and no indication identified. Overt GIB was defined as reported or witnessed hematemesis, coffee-ground emesis, hematochezia, bright red blood per rectum, or melena irrespective of time frame (current or remote) or chronicity (acute, subacute, or chronic). In cases where signs of overt bleed were not witnessed by medical professionals, determination of conditions such as melena or coffee-ground emesis were made based on health care providers’ assessment of patient history as documented in his or her notes. Suspected GIB/miscellaneous was defined with the following parameters: any new drop in hemoglobin, abdominal pain, anorectal pain, non-bloody vomiting, hemoptysis, isolated rising blood urea nitrogen, or patient noticing blood on self, clothing, or in the commode without an identified source. Patients who were anemic and found to have iron deficiency on recent lab studies (within 6 months) were reflexively categorized into iron deficiency with or without anemia as opposed to the “anemia” category, which was comprised of any anemia without recent iron studies or non-iron deficient anemia. FIT result was determined by test result entry in Epic, with results either reading positive or negative.

Diagnostic follow-up, for our purposes, was defined as receipt of an invasive procedure or surgery, including esophagogastroduodenoscopy (EGD), colonoscopy, flexible sigmoidoscopy, diagnostic and/or therapeutic abdominal surgical intervention, or any combination of these. Results of diagnostic follow-up were coded as normal or abnormal. A normal result was determined if all procedures performed were listed as normal or as “no pathological findings” on the operative or endoscopic report. Any reported pathologic findings on the operative/endoscopic report were coded as abnormal.

Statistical Analysis

Proportions were used to describe demographic characteristics of patients who received a FIT in acute hospital settings. Bivariable tables and Chi-square tests were used to compare indications and outcomes for FIT-positive and FIT-negative patients. The association between receipt of an invasive diagnostic follow-up (outcome) and the results of an inpatient FIT (predictor) was assessed using multivariable log-binomial regression to calculate risk ratios (RRs) and corresponding 95% confidence intervals. Log-binomial regression was used over logistic regression given that adjusted odds ratios generated by logistic regression often overestimate the association between the risk factor and the outcome when the outcome is common,²³ as in the case of diagnostic follow-up. The model was adjusted for variables selected a priori, specifically, age, gender, and FIT indication. Chi-square analysis was used to compare the proportion of abnormal findings on diagnostic follow-up by FIT result (negative vs positive).

Results

During the 8-month study period, there were 2718 FITs ordered and completed in the acute care setting, compared to 44,662 FITs ordered and completed in the outpatient setting (5.7% performed during acute care).

Among the 400 charts reviewed, 7 were excluded from the analysis because they were duplicates from the same patient, and 11 were excluded due to insufficient information in the patient’s medical record, resulting in 382 patients included in the analysis. Patient demographic characteristics are described in Table 1. Patients were predominantly Hispanic/Latino or Black/African American (51.0% and 32.5%, respectively), a majority had insurance through the county health system (50.5%), and most were male (58.1%). The average age of those receiving FIT was 52 years (standard deviation, 14.8 years), with 40.8% being under the age of 50. For a majority of patients, FIT was ordered in the ED by emergency medicine providers (79.8%). The remaining FITs were ordered by providers in 12 different inpatient departments. Of the FITs ordered, 35.1% were positive.

Indications for ordering FIT are listed in Table 2. The largest proportion of FITs were ordered for overt signs of GIB (54.2%), followed by anemia (22.0%), suspected GIB/miscellaneous reasons (12.3%), iron deficiency with or without anemia (7.6%), and non-bloody diarrhea (2.1%). In 1.8% of cases, no indication for FIT was found in the EMR. No FITs were ordered for the indication of CRC detection. Of these indication categories, overt GIB yielded the highest percentage of FIT positive results (44.0%), and non-bloody diarrhea yielded the lowest (0%).

A total of 110 patients (28.7%) underwent FIT and received invasive diagnostic follow-up. Of these 110 patients, 57 (51.8%) underwent EGD (2 of whom had further surgical intervention), 21 (19.1%) underwent colonoscopy (1 of whom had further surgical intervention), 25 (22.7%) underwent dual EGD and colonoscopy, 1 (0.9%) underwent flexible sigmoidoscopy, and 6 (5.5%) directly underwent abdominal surgical intervention. There was a significantly higher rate of diagnostic follow-up for FIT-positive vs FIT-negative patients (42.9% vs 21.3%; P < 0.001). However, of the 110 patients who underwent subsequent diagnostic follow-up, 48.2% were FIT negative. FIT-negative patients who received diagnostic follow-up were just as likely to have an abnormal finding as FIT-positive patients (90.6% vs 91.2%; P = 0.86).

Of the 382 patients in the study, 4 were diagnosed with CRC through diagnostic follow-up (1.0%). Of those 4 patients, 1 was FIT positive.

The results of the multivariable analyses to evaluate predictors of diagnostic colonoscopy are described in Table 3. Variables in the final model were FITresult, age, and FIT indication. After adjusting for other variables in the model, receipt of diagnostic follow-up was significantly associated with having a positive FIT (adjusted RR, 1.72; P < 0.001) and an overt GIB as an indication (adjusted RR, 2.00; P < 0.01).

Discussion

During the time frame of our study, 5.7% of all FITs ordered within our health system were ordered in the acute patient care setting at our hospitals. The most common indication was overt GIB, which was the indication for 54.2% of patients. Of note, none of the FITs ordered in the acute patient care setting were ordered for CRC screening. These findings support the evidence in the literature that stool-based screening tests, including FIT, are commonly used in US health care systems for diagnostic purposes and risk stratification in acute patient care to detect GIBs.^13-18

Our data suggest that FIT was not a clinically useful test in determining a patient’s need for diagnostic follow-up. While having a positive FIT was significantly associated with obtaining a diagnostic exam in multivariate analysis (RR, 1.72), having signs of overt GI bleeding was a stronger predictor of diagnostic follow-up (RR, 2.00). This salient finding is evidence that a thorough clinical history and physical exam may more strongly predict whether a patient will undergo endoscopy or other follow-up than a FIT result. These findings support other studies in the literature that have called into question the utility of FOBTs in these acute settings.^13-19 Under such circumstances, FOBTs have been shown to rarely influence patient management and thus represent an unnecessary expense.^13–17 Additionally, in some cases, FOBT use in these settings may negatively affect patient outcomes. Such adverse effects include delaying treatment until results are returned or obfuscating indicated management with the results (eg, a patient with indications for colonoscopy not being referred due to a negative FOBT).^13,14,17

We found that, for patients who subsequently went on to have diagnostic follow-up (most commonly endoscopy), there was no difference in the likelihood of FIT-positive and FIT-negative patients to have an abnormality discovered (91.2% vs 90.6%; P = 0.86). This analysis demonstrates no post-hoc support for FIT positivity as a predictor of presence of pathology in patients who were discriminately selected for diagnostic follow-up on clinical grounds by gastroenterologists and surgeons. It does, however, further support that clinical judgment about the need for diagnostic follow-up—irrespective of FIT result—has a very high yield for discovery of pathology in the acute setting.

There are multiple reasons why FOBTs, and specifically FIT, contribute little in management decisions for patients with suspected GI blood loss. Use of FIT raises concern for both false-negatives and false-positives when used outside of its indication. Regarding false- negatives, FIT is an unreliable test for detection of blood loss from the upper GI tract. As FITs utilize antibodies to detect the presence of globin, a byproduct of red blood cell breakdown, it is expected that FIT would fail to detect many cases of upper GI bleeding, as globin is broken down in the upper GI tract.²⁴ This fact is part of what has made FIT a more effective CRC screening test than its guaiac-based counterparts—it has greater specificity for lower GI tract blood loss compared to tests relying on detection of heme.⁸ While guaiac-based assays like Hemoccult have also been shown to be poor tests in acute patient care, they may more frequently, though still unreliably, detect blood of upper GI origin. We believe that part of the ongoing use of FIT in patients with a suspected upper GIB may be from lack of understanding among providers on the mechanistic difference between gFOBTs and FITs, even though gFOBTs also yield highly unreliable results.

FIT does not have the same risk of false-positive results that guaiac-based tests have, which can yield positive results with extra-intestinal blood ingestion, aspirin, or alcohol use; insignificant GI bleeding; and consumption of peroxidase-containing foods.^13,17,25 However, from a clinical standpoint, there are several scenarios of insignificant bleeding that would yield a positive FIT result, such as hemorrhoids, which are common in the US population.^26,27 Additionally, in the ED, where most FITs were performed in our study, it is possible that samples for FITs are being obtained via digital rectal exam (DRE) given patients’ acuity of medical conditions and time constraints. However, FIT has been validated when using a formed stool sample. Obtaining FIT via DRE may lead to microtrauma to the rectum, which could hypothetically yield a positive FIT.

Strengths of this study include its use of in-depth chart data on a large number of FIT-positive patients, which allowed us to discern indications, outcomes, and other clinical data that may have influenced clinical decision-making. Additionally, whereas other studies that address FOBT use in acute patient care have focused on guaiac-based assays, our findings regarding the lack of utility of FIT are novel and have particular relevance as FITs continue to grow in popularity. Nonetheless, there are certain limitations future research should seek to address. In this study, the diagnostic follow-up result was coded by presence or absence of pathologic findings but did not qualify findings by severity or attempt to determine whether the pathology noted on diagnostic follow-up was the definitive source of the suspected GI bleed. These variables could help determine whether there was a difference in severity of bleeding between FIT-positive and FIT-negative patients and could potentially be studied with a prospective research design. Our own study was not designed to address the question of whether FIT result informs patient management decisions. To answer this directly, interviews would have to be conducted with those making the follow-up decision (ie, endoscopists and surgeons). Additionally, this study was not adequately powered to make determinations on the efficacy of FIT in the acute care setting for detection of CRC. As mentioned, only 1 of the 4 patients (25%) who went on to be diagnosed with CRC on follow-up was initially FIT-positive. This would require further investigation.

Conclusion

FIT is being utilized for diagnostic purposes in the acute care of symptomatic patients, which is a misuse of an established screening test for CRC. While our study was not designed to answer whether and how often a FIT result informs subsequent patient management, our results indicate that FIT is an ineffective diagnostic and risk-stratification tool when used in the acute care setting. Our findings add to existing evidence that indicates FOBTs should not be used in acute patient care.

Taken as a whole, the results of our study add to a growing body of evidence demonstrating no role for FOBTs, and specifically FIT, in acute patient care. In light of this evidence, some health care systems have already demonstrated success with system-wide disinvestment from the test in acute patient care settings, with one group publishing about their disinvestment process.²⁸ After completion of our study, our preliminary data were presented to leadership from the internal medicine, emergency medicine, and laboratory divisions within our health care delivery system to galvanize complete disinvestment of FIT from acute care at our hospitals, a policy that was put into effect in July 2019.

Corresponding author: Nathaniel J. Spezia-Lindner, MD, Baylor College of Medicine, 7200 Cambridge St, BCM 903, Ste A10.197, Houston, TX 77030; [email protected].

Financial disclosures: None.

Funding: Cancer Prevention and Research Institute of Texas, CPRIT (PP170094, PDs: ML Jibaja-Weiss and JR Montealegre).

From Baylor College of Medicine, Houston, TX (Drs. Spezia-Lindner, Montealegre, Muldrew, and Suarez) and Harris Health System, Houston, TX (Shanna L. Harris, Maria Daheri, and Drs. Muldrew and Suarez).

Abstract

Objective: To characterize and analyze the prevalence, indications for, and outcomes of fecal immunochemical testing (FIT) in acute patient care within a safety net health care system’s emergency departments (EDs) and inpatient settings.

Design: Retrospective cohort study derived from administrative data.

Setting: A large, urban, safety net health care delivery system in Texas. The data gathered were from the health care system’s 2 primary hospitals and their associated EDs. This health care system utilizes FIT exclusively for fecal occult blood testing.

Participants: Adults ≥18 years who underwent FIT in the ED or inpatient setting between August 2016 and March 2017. Chart review abstractions were performed on a sample (n = 382) from the larger subset.

Measurements: Primary data points included total FITs performed in acute patient care during the study period, basic demographic data, FIT indications, FIT result, receipt of invasive diagnostic follow-up, and result of invasive diagnostic follow-up. Multivariable log-binomial regression was used to calculate risk ratios (RRs) to assess the association between FIT result and receipt of diagnostic follow-up. Chi-square analysis was used to compare the proportion of abnormal findings on diagnostic follow-up by FIT result.

Results: During the 8-month study period, 2718 FITs were performed in the ED and inpatient setting, comprising 5.7% of system-wide FITs. Of the 382 patients included in the chart review who underwent acute care FIT, a majority had their test performed in the ED (304, 79.6%), 133 of which were positive (34.8%). The most common indication for FIT was evidence of overt gastrointestinal (GI) bleed (207, 54.2%), followed by anemia (84, 22.0%). While a positive FIT result was significantly associated with obtaining a diagnostic exam in multivariate analysis (RR, 1.72; P < 0.001), having signs of overt GI bleeding was a stronger predictor of diagnostic follow-up (RR, 2.00; P = 0.003). Of patients who underwent FIT and received diagnostic follow-up (n = 110), 48.2% were FIT negative. These patients were just as likely to have an abnormal finding as FIT-positive patients (90.6% vs 91.2%; P = 0.86). Of the 382 patients in the study, 4 (1.0%) were subsequently diagnosed with colorectal cancer (CRC). Of those 4 patients, 1 (25%) was FIT positive.

Conclusion: FIT is being utilized in acute patient care outside of its established indication for CRC screening in asymptomatic, average-risk adults. Our study demonstrates that FIT is not useful in acute patient care.

Keywords: FOBT; FIT; fecal immunochemical testing; inpatient.

Despite the exclusive validation of FOBTs for use in CRC screening, studies have demonstrated that they are commonly used for a multitude of additional indications in emergency department (ED) and inpatient settings, most aimed at detecting or confirming GI blood loss. This may lead to inappropriate patient management, including the receipt of unnecessary follow-up procedures, which can incur significant costs to the patient and the health system.^13-19 These costs may be particularly burdensome in safety net health systems (ie, those that offer access to care regardless of the patient’s ability to pay), which serve a large proportion of socioeconomically disadvantaged individuals in the United States.^20,21 To our knowledge, no published study to date has specifically investigated the role of FIT in acute patient management.

This study characterizes the use of FIT in acute patient care within a large, urban, safety net health care system. Through a retrospective review of administrative data and patient charts, we evaluated FIT use prevalence, indications, and patient outcomes in the ED and inpatient settings.

Methods

Setting

This study was conducted in a large, urban, county-based integrated delivery system in Houston, Texas, that provides health care services to one of the largest uninsured and underinsured populations in the country.²² The health system includes 2 main hospitals and more than 20 ambulatory care clinics. Within its ambulatory care clinics, the health system implements a population-based screening strategy using stool-based testing. All adults aged 50 years or older who are due for FIT are identified through the health-maintenance module of the electronic medical record (EMR) and offered a take-home FIT. The health system utilizes FIT exclusively (OC-Light S FIT, Polymedco, Cortlandt Manor, NY); no guaiac-based assays are available.

Design and Data Collection

We began by using administrative records to determine the proportion of FITs conducted health system-wide that were ordered and completed in the acute care setting over the study period (August 2016-March 2017). Specifically, we used aggregate quality metric reports, which quantify the number of FITs conducted at each health system clinic and hospital each month, to calculate the proportion of FITs done in the ED and inpatient hospital setting.

We then conducted a retrospective cohort study of 382 adult patients who received FIT in the EDs and inpatient wards in both of the health system’s hospitals over the study period. All data were collected by retrospective chart review in Epic (Madison, WI) EMRs. Sampling was performed by selecting the medical record numbers corresponding to the first 50 completed FITs chronologically each month over the 8-month period, with a total of 400 charts reviewed.

Data collected included basic patient demographics, location of FIT ordering (ED vs inpatient), primary service ordering FIT, FIT indication, FIT result, and receipt and results of invasive diagnostic follow-up. Demographics collected included age, biological sex, race (self-selected), and insurance coverage.

FIT indication was determined based on resident or attending physician notes. The history of present illness, physical exam, and assessment and plan section of notes were reviewed by the lead author for a specific statement of indication for FIT or for evidence of clinical presentation for which FIT could reasonably be ordered. Indications were iteratively reviewed and collapsed into 6 different categories: anemia, iron deficiency with or without anemia, overt GIB, suspected GIB/miscellaneous, non-bloody diarrhea, and no indication identified. Overt GIB was defined as reported or witnessed hematemesis, coffee-ground emesis, hematochezia, bright red blood per rectum, or melena irrespective of time frame (current or remote) or chronicity (acute, subacute, or chronic). In cases where signs of overt bleed were not witnessed by medical professionals, determination of conditions such as melena or coffee-ground emesis were made based on health care providers’ assessment of patient history as documented in his or her notes. Suspected GIB/miscellaneous was defined with the following parameters: any new drop in hemoglobin, abdominal pain, anorectal pain, non-bloody vomiting, hemoptysis, isolated rising blood urea nitrogen, or patient noticing blood on self, clothing, or in the commode without an identified source. Patients who were anemic and found to have iron deficiency on recent lab studies (within 6 months) were reflexively categorized into iron deficiency with or without anemia as opposed to the “anemia” category, which was comprised of any anemia without recent iron studies or non-iron deficient anemia. FIT result was determined by test result entry in Epic, with results either reading positive or negative.

Diagnostic follow-up, for our purposes, was defined as receipt of an invasive procedure or surgery, including esophagogastroduodenoscopy (EGD), colonoscopy, flexible sigmoidoscopy, diagnostic and/or therapeutic abdominal surgical intervention, or any combination of these. Results of diagnostic follow-up were coded as normal or abnormal. A normal result was determined if all procedures performed were listed as normal or as “no pathological findings” on the operative or endoscopic report. Any reported pathologic findings on the operative/endoscopic report were coded as abnormal.

Statistical Analysis

Proportions were used to describe demographic characteristics of patients who received a FIT in acute hospital settings. Bivariable tables and Chi-square tests were used to compare indications and outcomes for FIT-positive and FIT-negative patients. The association between receipt of an invasive diagnostic follow-up (outcome) and the results of an inpatient FIT (predictor) was assessed using multivariable log-binomial regression to calculate risk ratios (RRs) and corresponding 95% confidence intervals. Log-binomial regression was used over logistic regression given that adjusted odds ratios generated by logistic regression often overestimate the association between the risk factor and the outcome when the outcome is common,²³ as in the case of diagnostic follow-up. The model was adjusted for variables selected a priori, specifically, age, gender, and FIT indication. Chi-square analysis was used to compare the proportion of abnormal findings on diagnostic follow-up by FIT result (negative vs positive).

Results

During the 8-month study period, there were 2718 FITs ordered and completed in the acute care setting, compared to 44,662 FITs ordered and completed in the outpatient setting (5.7% performed during acute care).

Among the 400 charts reviewed, 7 were excluded from the analysis because they were duplicates from the same patient, and 11 were excluded due to insufficient information in the patient’s medical record, resulting in 382 patients included in the analysis. Patient demographic characteristics are described in Table 1. Patients were predominantly Hispanic/Latino or Black/African American (51.0% and 32.5%, respectively), a majority had insurance through the county health system (50.5%), and most were male (58.1%). The average age of those receiving FIT was 52 years (standard deviation, 14.8 years), with 40.8% being under the age of 50. For a majority of patients, FIT was ordered in the ED by emergency medicine providers (79.8%). The remaining FITs were ordered by providers in 12 different inpatient departments. Of the FITs ordered, 35.1% were positive.

Indications for ordering FIT are listed in Table 2. The largest proportion of FITs were ordered for overt signs of GIB (54.2%), followed by anemia (22.0%), suspected GIB/miscellaneous reasons (12.3%), iron deficiency with or without anemia (7.6%), and non-bloody diarrhea (2.1%). In 1.8% of cases, no indication for FIT was found in the EMR. No FITs were ordered for the indication of CRC detection. Of these indication categories, overt GIB yielded the highest percentage of FIT positive results (44.0%), and non-bloody diarrhea yielded the lowest (0%).

A total of 110 patients (28.7%) underwent FIT and received invasive diagnostic follow-up. Of these 110 patients, 57 (51.8%) underwent EGD (2 of whom had further surgical intervention), 21 (19.1%) underwent colonoscopy (1 of whom had further surgical intervention), 25 (22.7%) underwent dual EGD and colonoscopy, 1 (0.9%) underwent flexible sigmoidoscopy, and 6 (5.5%) directly underwent abdominal surgical intervention. There was a significantly higher rate of diagnostic follow-up for FIT-positive vs FIT-negative patients (42.9% vs 21.3%; P < 0.001). However, of the 110 patients who underwent subsequent diagnostic follow-up, 48.2% were FIT negative. FIT-negative patients who received diagnostic follow-up were just as likely to have an abnormal finding as FIT-positive patients (90.6% vs 91.2%; P = 0.86).

Of the 382 patients in the study, 4 were diagnosed with CRC through diagnostic follow-up (1.0%). Of those 4 patients, 1 was FIT positive.

The results of the multivariable analyses to evaluate predictors of diagnostic colonoscopy are described in Table 3. Variables in the final model were FITresult, age, and FIT indication. After adjusting for other variables in the model, receipt of diagnostic follow-up was significantly associated with having a positive FIT (adjusted RR, 1.72; P < 0.001) and an overt GIB as an indication (adjusted RR, 2.00; P < 0.01).

Discussion

During the time frame of our study, 5.7% of all FITs ordered within our health system were ordered in the acute patient care setting at our hospitals. The most common indication was overt GIB, which was the indication for 54.2% of patients. Of note, none of the FITs ordered in the acute patient care setting were ordered for CRC screening. These findings support the evidence in the literature that stool-based screening tests, including FIT, are commonly used in US health care systems for diagnostic purposes and risk stratification in acute patient care to detect GIBs.^13-18

Our data suggest that FIT was not a clinically useful test in determining a patient’s need for diagnostic follow-up. While having a positive FIT was significantly associated with obtaining a diagnostic exam in multivariate analysis (RR, 1.72), having signs of overt GI bleeding was a stronger predictor of diagnostic follow-up (RR, 2.00). This salient finding is evidence that a thorough clinical history and physical exam may more strongly predict whether a patient will undergo endoscopy or other follow-up than a FIT result. These findings support other studies in the literature that have called into question the utility of FOBTs in these acute settings.^13-19 Under such circumstances, FOBTs have been shown to rarely influence patient management and thus represent an unnecessary expense.^13–17 Additionally, in some cases, FOBT use in these settings may negatively affect patient outcomes. Such adverse effects include delaying treatment until results are returned or obfuscating indicated management with the results (eg, a patient with indications for colonoscopy not being referred due to a negative FOBT).^13,14,17

We found that, for patients who subsequently went on to have diagnostic follow-up (most commonly endoscopy), there was no difference in the likelihood of FIT-positive and FIT-negative patients to have an abnormality discovered (91.2% vs 90.6%; P = 0.86). This analysis demonstrates no post-hoc support for FIT positivity as a predictor of presence of pathology in patients who were discriminately selected for diagnostic follow-up on clinical grounds by gastroenterologists and surgeons. It does, however, further support that clinical judgment about the need for diagnostic follow-up—irrespective of FIT result—has a very high yield for discovery of pathology in the acute setting.

There are multiple reasons why FOBTs, and specifically FIT, contribute little in management decisions for patients with suspected GI blood loss. Use of FIT raises concern for both false-negatives and false-positives when used outside of its indication. Regarding false- negatives, FIT is an unreliable test for detection of blood loss from the upper GI tract. As FITs utilize antibodies to detect the presence of globin, a byproduct of red blood cell breakdown, it is expected that FIT would fail to detect many cases of upper GI bleeding, as globin is broken down in the upper GI tract.²⁴ This fact is part of what has made FIT a more effective CRC screening test than its guaiac-based counterparts—it has greater specificity for lower GI tract blood loss compared to tests relying on detection of heme.⁸ While guaiac-based assays like Hemoccult have also been shown to be poor tests in acute patient care, they may more frequently, though still unreliably, detect blood of upper GI origin. We believe that part of the ongoing use of FIT in patients with a suspected upper GIB may be from lack of understanding among providers on the mechanistic difference between gFOBTs and FITs, even though gFOBTs also yield highly unreliable results.

FIT does not have the same risk of false-positive results that guaiac-based tests have, which can yield positive results with extra-intestinal blood ingestion, aspirin, or alcohol use; insignificant GI bleeding; and consumption of peroxidase-containing foods.^13,17,25 However, from a clinical standpoint, there are several scenarios of insignificant bleeding that would yield a positive FIT result, such as hemorrhoids, which are common in the US population.^26,27 Additionally, in the ED, where most FITs were performed in our study, it is possible that samples for FITs are being obtained via digital rectal exam (DRE) given patients’ acuity of medical conditions and time constraints. However, FIT has been validated when using a formed stool sample. Obtaining FIT via DRE may lead to microtrauma to the rectum, which could hypothetically yield a positive FIT.

Strengths of this study include its use of in-depth chart data on a large number of FIT-positive patients, which allowed us to discern indications, outcomes, and other clinical data that may have influenced clinical decision-making. Additionally, whereas other studies that address FOBT use in acute patient care have focused on guaiac-based assays, our findings regarding the lack of utility of FIT are novel and have particular relevance as FITs continue to grow in popularity. Nonetheless, there are certain limitations future research should seek to address. In this study, the diagnostic follow-up result was coded by presence or absence of pathologic findings but did not qualify findings by severity or attempt to determine whether the pathology noted on diagnostic follow-up was the definitive source of the suspected GI bleed. These variables could help determine whether there was a difference in severity of bleeding between FIT-positive and FIT-negative patients and could potentially be studied with a prospective research design. Our own study was not designed to address the question of whether FIT result informs patient management decisions. To answer this directly, interviews would have to be conducted with those making the follow-up decision (ie, endoscopists and surgeons). Additionally, this study was not adequately powered to make determinations on the efficacy of FIT in the acute care setting for detection of CRC. As mentioned, only 1 of the 4 patients (25%) who went on to be diagnosed with CRC on follow-up was initially FIT-positive. This would require further investigation.

Conclusion

FIT is being utilized for diagnostic purposes in the acute care of symptomatic patients, which is a misuse of an established screening test for CRC. While our study was not designed to answer whether and how often a FIT result informs subsequent patient management, our results indicate that FIT is an ineffective diagnostic and risk-stratification tool when used in the acute care setting. Our findings add to existing evidence that indicates FOBTs should not be used in acute patient care.

Taken as a whole, the results of our study add to a growing body of evidence demonstrating no role for FOBTs, and specifically FIT, in acute patient care. In light of this evidence, some health care systems have already demonstrated success with system-wide disinvestment from the test in acute patient care settings, with one group publishing about their disinvestment process.²⁸ After completion of our study, our preliminary data were presented to leadership from the internal medicine, emergency medicine, and laboratory divisions within our health care delivery system to galvanize complete disinvestment of FIT from acute care at our hospitals, a policy that was put into effect in July 2019.

Corresponding author: Nathaniel J. Spezia-Lindner, MD, Baylor College of Medicine, 7200 Cambridge St, BCM 903, Ste A10.197, Houston, TX 77030; [email protected].

Financial disclosures: None.

Funding: Cancer Prevention and Research Institute of Texas, CPRIT (PP170094, PDs: ML Jibaja-Weiss and JR Montealegre).

From Baylor College of Medicine, Houston, TX (Drs. Spezia-Lindner, Montealegre, Muldrew, and Suarez) and Harris Health System, Houston, TX (Shanna L. Harris, Maria Daheri, and Drs. Muldrew and Suarez).

Abstract

Objective: To characterize and analyze the prevalence, indications for, and outcomes of fecal immunochemical testing (FIT) in acute patient care within a safety net health care system’s emergency departments (EDs) and inpatient settings.

Design: Retrospective cohort study derived from administrative data.

Setting: A large, urban, safety net health care delivery system in Texas. The data gathered were from the health care system’s 2 primary hospitals and their associated EDs. This health care system utilizes FIT exclusively for fecal occult blood testing.

Participants: Adults ≥18 years who underwent FIT in the ED or inpatient setting between August 2016 and March 2017. Chart review abstractions were performed on a sample (n = 382) from the larger subset.

Measurements: Primary data points included total FITs performed in acute patient care during the study period, basic demographic data, FIT indications, FIT result, receipt of invasive diagnostic follow-up, and result of invasive diagnostic follow-up. Multivariable log-binomial regression was used to calculate risk ratios (RRs) to assess the association between FIT result and receipt of diagnostic follow-up. Chi-square analysis was used to compare the proportion of abnormal findings on diagnostic follow-up by FIT result.

Results: During the 8-month study period, 2718 FITs were performed in the ED and inpatient setting, comprising 5.7% of system-wide FITs. Of the 382 patients included in the chart review who underwent acute care FIT, a majority had their test performed in the ED (304, 79.6%), 133 of which were positive (34.8%). The most common indication for FIT was evidence of overt gastrointestinal (GI) bleed (207, 54.2%), followed by anemia (84, 22.0%). While a positive FIT result was significantly associated with obtaining a diagnostic exam in multivariate analysis (RR, 1.72; P < 0.001), having signs of overt GI bleeding was a stronger predictor of diagnostic follow-up (RR, 2.00; P = 0.003). Of patients who underwent FIT and received diagnostic follow-up (n = 110), 48.2% were FIT negative. These patients were just as likely to have an abnormal finding as FIT-positive patients (90.6% vs 91.2%; P = 0.86). Of the 382 patients in the study, 4 (1.0%) were subsequently diagnosed with colorectal cancer (CRC). Of those 4 patients, 1 (25%) was FIT positive.

Conclusion: FIT is being utilized in acute patient care outside of its established indication for CRC screening in asymptomatic, average-risk adults. Our study demonstrates that FIT is not useful in acute patient care.

Keywords: FOBT; FIT; fecal immunochemical testing; inpatient.

Despite the exclusive validation of FOBTs for use in CRC screening, studies have demonstrated that they are commonly used for a multitude of additional indications in emergency department (ED) and inpatient settings, most aimed at detecting or confirming GI blood loss. This may lead to inappropriate patient management, including the receipt of unnecessary follow-up procedures, which can incur significant costs to the patient and the health system.^13-19 These costs may be particularly burdensome in safety net health systems (ie, those that offer access to care regardless of the patient’s ability to pay), which serve a large proportion of socioeconomically disadvantaged individuals in the United States.^20,21 To our knowledge, no published study to date has specifically investigated the role of FIT in acute patient management.

This study characterizes the use of FIT in acute patient care within a large, urban, safety net health care system. Through a retrospective review of administrative data and patient charts, we evaluated FIT use prevalence, indications, and patient outcomes in the ED and inpatient settings.

Methods

Setting

This study was conducted in a large, urban, county-based integrated delivery system in Houston, Texas, that provides health care services to one of the largest uninsured and underinsured populations in the country.²² The health system includes 2 main hospitals and more than 20 ambulatory care clinics. Within its ambulatory care clinics, the health system implements a population-based screening strategy using stool-based testing. All adults aged 50 years or older who are due for FIT are identified through the health-maintenance module of the electronic medical record (EMR) and offered a take-home FIT. The health system utilizes FIT exclusively (OC-Light S FIT, Polymedco, Cortlandt Manor, NY); no guaiac-based assays are available.

Design and Data Collection

We began by using administrative records to determine the proportion of FITs conducted health system-wide that were ordered and completed in the acute care setting over the study period (August 2016-March 2017). Specifically, we used aggregate quality metric reports, which quantify the number of FITs conducted at each health system clinic and hospital each month, to calculate the proportion of FITs done in the ED and inpatient hospital setting.

We then conducted a retrospective cohort study of 382 adult patients who received FIT in the EDs and inpatient wards in both of the health system’s hospitals over the study period. All data were collected by retrospective chart review in Epic (Madison, WI) EMRs. Sampling was performed by selecting the medical record numbers corresponding to the first 50 completed FITs chronologically each month over the 8-month period, with a total of 400 charts reviewed.

Data collected included basic patient demographics, location of FIT ordering (ED vs inpatient), primary service ordering FIT, FIT indication, FIT result, and receipt and results of invasive diagnostic follow-up. Demographics collected included age, biological sex, race (self-selected), and insurance coverage.

FIT indication was determined based on resident or attending physician notes. The history of present illness, physical exam, and assessment and plan section of notes were reviewed by the lead author for a specific statement of indication for FIT or for evidence of clinical presentation for which FIT could reasonably be ordered. Indications were iteratively reviewed and collapsed into 6 different categories: anemia, iron deficiency with or without anemia, overt GIB, suspected GIB/miscellaneous, non-bloody diarrhea, and no indication identified. Overt GIB was defined as reported or witnessed hematemesis, coffee-ground emesis, hematochezia, bright red blood per rectum, or melena irrespective of time frame (current or remote) or chronicity (acute, subacute, or chronic). In cases where signs of overt bleed were not witnessed by medical professionals, determination of conditions such as melena or coffee-ground emesis were made based on health care providers’ assessment of patient history as documented in his or her notes. Suspected GIB/miscellaneous was defined with the following parameters: any new drop in hemoglobin, abdominal pain, anorectal pain, non-bloody vomiting, hemoptysis, isolated rising blood urea nitrogen, or patient noticing blood on self, clothing, or in the commode without an identified source. Patients who were anemic and found to have iron deficiency on recent lab studies (within 6 months) were reflexively categorized into iron deficiency with or without anemia as opposed to the “anemia” category, which was comprised of any anemia without recent iron studies or non-iron deficient anemia. FIT result was determined by test result entry in Epic, with results either reading positive or negative.

Diagnostic follow-up, for our purposes, was defined as receipt of an invasive procedure or surgery, including esophagogastroduodenoscopy (EGD), colonoscopy, flexible sigmoidoscopy, diagnostic and/or therapeutic abdominal surgical intervention, or any combination of these. Results of diagnostic follow-up were coded as normal or abnormal. A normal result was determined if all procedures performed were listed as normal or as “no pathological findings” on the operative or endoscopic report. Any reported pathologic findings on the operative/endoscopic report were coded as abnormal.

Statistical Analysis

Proportions were used to describe demographic characteristics of patients who received a FIT in acute hospital settings. Bivariable tables and Chi-square tests were used to compare indications and outcomes for FIT-positive and FIT-negative patients. The association between receipt of an invasive diagnostic follow-up (outcome) and the results of an inpatient FIT (predictor) was assessed using multivariable log-binomial regression to calculate risk ratios (RRs) and corresponding 95% confidence intervals. Log-binomial regression was used over logistic regression given that adjusted odds ratios generated by logistic regression often overestimate the association between the risk factor and the outcome when the outcome is common,²³ as in the case of diagnostic follow-up. The model was adjusted for variables selected a priori, specifically, age, gender, and FIT indication. Chi-square analysis was used to compare the proportion of abnormal findings on diagnostic follow-up by FIT result (negative vs positive).

Results

During the 8-month study period, there were 2718 FITs ordered and completed in the acute care setting, compared to 44,662 FITs ordered and completed in the outpatient setting (5.7% performed during acute care).

Among the 400 charts reviewed, 7 were excluded from the analysis because they were duplicates from the same patient, and 11 were excluded due to insufficient information in the patient’s medical record, resulting in 382 patients included in the analysis. Patient demographic characteristics are described in Table 1. Patients were predominantly Hispanic/Latino or Black/African American (51.0% and 32.5%, respectively), a majority had insurance through the county health system (50.5%), and most were male (58.1%). The average age of those receiving FIT was 52 years (standard deviation, 14.8 years), with 40.8% being under the age of 50. For a majority of patients, FIT was ordered in the ED by emergency medicine providers (79.8%). The remaining FITs were ordered by providers in 12 different inpatient departments. Of the FITs ordered, 35.1% were positive.

Indications for ordering FIT are listed in Table 2. The largest proportion of FITs were ordered for overt signs of GIB (54.2%), followed by anemia (22.0%), suspected GIB/miscellaneous reasons (12.3%), iron deficiency with or without anemia (7.6%), and non-bloody diarrhea (2.1%). In 1.8% of cases, no indication for FIT was found in the EMR. No FITs were ordered for the indication of CRC detection. Of these indication categories, overt GIB yielded the highest percentage of FIT positive results (44.0%), and non-bloody diarrhea yielded the lowest (0%).

A total of 110 patients (28.7%) underwent FIT and received invasive diagnostic follow-up. Of these 110 patients, 57 (51.8%) underwent EGD (2 of whom had further surgical intervention), 21 (19.1%) underwent colonoscopy (1 of whom had further surgical intervention), 25 (22.7%) underwent dual EGD and colonoscopy, 1 (0.9%) underwent flexible sigmoidoscopy, and 6 (5.5%) directly underwent abdominal surgical intervention. There was a significantly higher rate of diagnostic follow-up for FIT-positive vs FIT-negative patients (42.9% vs 21.3%; P < 0.001). However, of the 110 patients who underwent subsequent diagnostic follow-up, 48.2% were FIT negative. FIT-negative patients who received diagnostic follow-up were just as likely to have an abnormal finding as FIT-positive patients (90.6% vs 91.2%; P = 0.86).

Of the 382 patients in the study, 4 were diagnosed with CRC through diagnostic follow-up (1.0%). Of those 4 patients, 1 was FIT positive.

The results of the multivariable analyses to evaluate predictors of diagnostic colonoscopy are described in Table 3. Variables in the final model were FITresult, age, and FIT indication. After adjusting for other variables in the model, receipt of diagnostic follow-up was significantly associated with having a positive FIT (adjusted RR, 1.72; P < 0.001) and an overt GIB as an indication (adjusted RR, 2.00; P < 0.01).

Discussion

During the time frame of our study, 5.7% of all FITs ordered within our health system were ordered in the acute patient care setting at our hospitals. The most common indication was overt GIB, which was the indication for 54.2% of patients. Of note, none of the FITs ordered in the acute patient care setting were ordered for CRC screening. These findings support the evidence in the literature that stool-based screening tests, including FIT, are commonly used in US health care systems for diagnostic purposes and risk stratification in acute patient care to detect GIBs.^13-18

Our data suggest that FIT was not a clinically useful test in determining a patient’s need for diagnostic follow-up. While having a positive FIT was significantly associated with obtaining a diagnostic exam in multivariate analysis (RR, 1.72), having signs of overt GI bleeding was a stronger predictor of diagnostic follow-up (RR, 2.00). This salient finding is evidence that a thorough clinical history and physical exam may more strongly predict whether a patient will undergo endoscopy or other follow-up than a FIT result. These findings support other studies in the literature that have called into question the utility of FOBTs in these acute settings.^13-19 Under such circumstances, FOBTs have been shown to rarely influence patient management and thus represent an unnecessary expense.^13–17 Additionally, in some cases, FOBT use in these settings may negatively affect patient outcomes. Such adverse effects include delaying treatment until results are returned or obfuscating indicated management with the results (eg, a patient with indications for colonoscopy not being referred due to a negative FOBT).^13,14,17

We found that, for patients who subsequently went on to have diagnostic follow-up (most commonly endoscopy), there was no difference in the likelihood of FIT-positive and FIT-negative patients to have an abnormality discovered (91.2% vs 90.6%; P = 0.86). This analysis demonstrates no post-hoc support for FIT positivity as a predictor of presence of pathology in patients who were discriminately selected for diagnostic follow-up on clinical grounds by gastroenterologists and surgeons. It does, however, further support that clinical judgment about the need for diagnostic follow-up—irrespective of FIT result—has a very high yield for discovery of pathology in the acute setting.

There are multiple reasons why FOBTs, and specifically FIT, contribute little in management decisions for patients with suspected GI blood loss. Use of FIT raises concern for both false-negatives and false-positives when used outside of its indication. Regarding false- negatives, FIT is an unreliable test for detection of blood loss from the upper GI tract. As FITs utilize antibodies to detect the presence of globin, a byproduct of red blood cell breakdown, it is expected that FIT would fail to detect many cases of upper GI bleeding, as globin is broken down in the upper GI tract.²⁴ This fact is part of what has made FIT a more effective CRC screening test than its guaiac-based counterparts—it has greater specificity for lower GI tract blood loss compared to tests relying on detection of heme.⁸ While guaiac-based assays like Hemoccult have also been shown to be poor tests in acute patient care, they may more frequently, though still unreliably, detect blood of upper GI origin. We believe that part of the ongoing use of FIT in patients with a suspected upper GIB may be from lack of understanding among providers on the mechanistic difference between gFOBTs and FITs, even though gFOBTs also yield highly unreliable results.

FIT does not have the same risk of false-positive results that guaiac-based tests have, which can yield positive results with extra-intestinal blood ingestion, aspirin, or alcohol use; insignificant GI bleeding; and consumption of peroxidase-containing foods.^13,17,25 However, from a clinical standpoint, there are several scenarios of insignificant bleeding that would yield a positive FIT result, such as hemorrhoids, which are common in the US population.^26,27 Additionally, in the ED, where most FITs were performed in our study, it is possible that samples for FITs are being obtained via digital rectal exam (DRE) given patients’ acuity of medical conditions and time constraints. However, FIT has been validated when using a formed stool sample. Obtaining FIT via DRE may lead to microtrauma to the rectum, which could hypothetically yield a positive FIT.

Strengths of this study include its use of in-depth chart data on a large number of FIT-positive patients, which allowed us to discern indications, outcomes, and other clinical data that may have influenced clinical decision-making. Additionally, whereas other studies that address FOBT use in acute patient care have focused on guaiac-based assays, our findings regarding the lack of utility of FIT are novel and have particular relevance as FITs continue to grow in popularity. Nonetheless, there are certain limitations future research should seek to address. In this study, the diagnostic follow-up result was coded by presence or absence of pathologic findings but did not qualify findings by severity or attempt to determine whether the pathology noted on diagnostic follow-up was the definitive source of the suspected GI bleed. These variables could help determine whether there was a difference in severity of bleeding between FIT-positive and FIT-negative patients and could potentially be studied with a prospective research design. Our own study was not designed to address the question of whether FIT result informs patient management decisions. To answer this directly, interviews would have to be conducted with those making the follow-up decision (ie, endoscopists and surgeons). Additionally, this study was not adequately powered to make determinations on the efficacy of FIT in the acute care setting for detection of CRC. As mentioned, only 1 of the 4 patients (25%) who went on to be diagnosed with CRC on follow-up was initially FIT-positive. This would require further investigation.

Conclusion

FIT is being utilized for diagnostic purposes in the acute care of symptomatic patients, which is a misuse of an established screening test for CRC. While our study was not designed to answer whether and how often a FIT result informs subsequent patient management, our results indicate that FIT is an ineffective diagnostic and risk-stratification tool when used in the acute care setting. Our findings add to existing evidence that indicates FOBTs should not be used in acute patient care.

Taken as a whole, the results of our study add to a growing body of evidence demonstrating no role for FOBTs, and specifically FIT, in acute patient care. In light of this evidence, some health care systems have already demonstrated success with system-wide disinvestment from the test in acute patient care settings, with one group publishing about their disinvestment process.²⁸ After completion of our study, our preliminary data were presented to leadership from the internal medicine, emergency medicine, and laboratory divisions within our health care delivery system to galvanize complete disinvestment of FIT from acute care at our hospitals, a policy that was put into effect in July 2019.

Corresponding author: Nathaniel J. Spezia-Lindner, MD, Baylor College of Medicine, 7200 Cambridge St, BCM 903, Ste A10.197, Houston, TX 77030; [email protected].

Financial disclosures: None.

Funding: Cancer Prevention and Research Institute of Texas, CPRIT (PP170094, PDs: ML Jibaja-Weiss and JR Montealegre).