CAD & Atherosclerosis

Nirmatrelvir/ritonavir (Paxlovid) has been a game changer for high-risk patients with early COVID-19 symptoms but has significant interactions with commonly used cardiovascular medications, a new paper cautions.

COVID-19 patients with cardiovascular disease (CVD) or risk factors such as diabetes, hypertension, and chronic kidney disease are at high risk of severe disease and account for the lion’s share of those receiving Paxlovid. Data from the initial EPIC-HR trial and recent real-world data also suggest they’re among the most likely to benefit from the oral antiviral, regardless of their COVID-19 vaccination status.

ClaudioVentrella/Thinkstock

“But at the same time, it unfortunately interacts with many very commonly prescribed cardiovascular medications and with many of them in a very clinically meaningful way, which may lead to serious adverse consequences,” senior author Sarju Ganatra, MD, said in an interview. “So, while it’s being prescribed with a good intention to help these people, we may actually end up doing more harm than good.

“We don’t want to deter people from getting their necessary COVID-19 treatment, which is excellent for the most part these days as an outpatient,” he added. “So, we felt the need to make a comprehensive list of cardiac medications and level of interactions with Paxlovid and also to help the clinicians and prescribers at the point of care to make the clinical decision of what modifications they may need to do.”

The paper, published online in the Journal of the American College of Cardiology, details drug-drug interactions with some 80 CV medications including statins, antihypertensive agents, heart failure therapies, and antiplatelet/anticoagulants.

It also includes a color-coded figure denoting whether a drug is safe to coadminister with Paxlovid, may potentially interact and require a dose adjustment or temporary discontinuation, or is contraindicated.

Among the commonly used blood thinners, for example, the paper notes that Paxlovid significantly increases drug levels of the direct oral anticoagulants (DOACs) apixaban, rivaroxaban, edoxaban, and dabigatran and, thus, increases the risk of bleeding.

“It can still be administered, if it’s necessary, but the dose of the DOAC either needs to be reduced or held depending on what they are getting it for, whether they’re getting it for pulmonary embolism or atrial fibrillation, and we adjust for all those things in the table in the paper,” said Dr. Ganatra, from Lahey Hospital and Medical Center, Burlington, Mass.

When the DOAC can’t be interrupted or dose adjusted, however, Paxlovid should not be given, the experts said. The antiviral is safe to use with enoxaparin, a low-molecular-weight heparin, but can increase or decrease levels of warfarin and should be used with close international normalized ratio monitoring.

For patients on antiplatelet agents, clinicians are advised to avoid prescribing nirmatrelvir/ritonavir to those on ticagrelor or clopidogrel unless the agents can be replaced by prasugrel.

Ritonavir – an inhibitor of cytochrome P 450 enzymes, particularly CYP3A4 – poses an increased risk of bleeding when given with ticagrelor, a CYP3A4 substrate, and decreases the active metabolite of clopidogrel, cutting its platelet inhibition by 20%. Although there’s a twofold decrease in the maximum concentration of prasugrel in patients on ritonavir, this does not affect its antiplatelet activity, the paper explains.

Among the lipid-lowering agents, experts suggested temporarily withholding atorvastatin, rosuvastatin, simvastatin, and lovastatin because of an increased risk for myopathy and liver toxicity but say that other statins, fibrates, ezetimibe, and the proprotein convertase subtilisin/kexin type 9 inhibitors evolocumab and alirocumab are safe to coadminister with Paxlovid.

While statins typically leave the body within hours, most of the antiarrhythmic drugs, except for sotalol, are not safe to give with Paxlovid, Dr. Ganatra said. It’s technically not feasible to hold these drugs because most have long half-lives, reaching about 100 days, for example, for amiodarone.

“It’s going to hang around in your system for a long time, so you don’t want to be falsely reassured that you’re holding the drug and it’s going to be fine to go back slowly,” he said. “You need to look for alternative therapies in those scenarios for COVID-19 treatment, which could be other antivirals, or a monoclonal antibody individualized to the patient’s risk.”

Although there’s limited clinical information regarding interaction-related adverse events with Paxlovid, the team used pharmacokinetics and pharmacodynamics data to provide the guidance. Serious adverse events are also well documented for ritonavir, which has been prescribed for years to treat HIV, Dr. Ganatra noted.

The Infectious Disease Society of America also published guidance on the management of potential drug interactions with Paxlovid in May and, earlier in October, the Food and Drug Administration updated its Paxlovid patient eligibility screening checklist.

Still, most prescribers are actually primary care physicians and even pharmacists, who may not be completely attuned, said Dr. Ganatra, who noted that some centers have started programs to help connect primary care physicians with their cardiology colleagues to check on CV drugs in their COVID-19 patients.

“We need to be thinking more broadly and at a system level where the hospital or health care system leverages the electronic health record systems,” he said. “Most of them are sophisticated enough to incorporate simple drug-drug interaction information, so if you try to prescribe someone Paxlovid and it’s a heart transplant patient who is on immunosuppressive therapy or a patient on a blood thinner, then it should give you a warning ... or at least give them a link to our paper or other valuable resources.

“If someone is on a blood thinner and the blood thinner level goes up by ninefold, we can only imagine what we would be dealing with,” Dr. Ganatra said. “So, these interactions should be taken very seriously and I think it’s worth the time and investment.”

The authors reported no relevant financial relationships.

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

Nirmatrelvir/ritonavir (Paxlovid) has been a game changer for high-risk patients with early COVID-19 symptoms but has significant interactions with commonly used cardiovascular medications, a new paper cautions.

COVID-19 patients with cardiovascular disease (CVD) or risk factors such as diabetes, hypertension, and chronic kidney disease are at high risk of severe disease and account for the lion’s share of those receiving Paxlovid. Data from the initial EPIC-HR trial and recent real-world data also suggest they’re among the most likely to benefit from the oral antiviral, regardless of their COVID-19 vaccination status.

ClaudioVentrella/Thinkstock

“But at the same time, it unfortunately interacts with many very commonly prescribed cardiovascular medications and with many of them in a very clinically meaningful way, which may lead to serious adverse consequences,” senior author Sarju Ganatra, MD, said in an interview. “So, while it’s being prescribed with a good intention to help these people, we may actually end up doing more harm than good.

“We don’t want to deter people from getting their necessary COVID-19 treatment, which is excellent for the most part these days as an outpatient,” he added. “So, we felt the need to make a comprehensive list of cardiac medications and level of interactions with Paxlovid and also to help the clinicians and prescribers at the point of care to make the clinical decision of what modifications they may need to do.”

The paper, published online in the Journal of the American College of Cardiology, details drug-drug interactions with some 80 CV medications including statins, antihypertensive agents, heart failure therapies, and antiplatelet/anticoagulants.

It also includes a color-coded figure denoting whether a drug is safe to coadminister with Paxlovid, may potentially interact and require a dose adjustment or temporary discontinuation, or is contraindicated.

Among the commonly used blood thinners, for example, the paper notes that Paxlovid significantly increases drug levels of the direct oral anticoagulants (DOACs) apixaban, rivaroxaban, edoxaban, and dabigatran and, thus, increases the risk of bleeding.

“It can still be administered, if it’s necessary, but the dose of the DOAC either needs to be reduced or held depending on what they are getting it for, whether they’re getting it for pulmonary embolism or atrial fibrillation, and we adjust for all those things in the table in the paper,” said Dr. Ganatra, from Lahey Hospital and Medical Center, Burlington, Mass.

When the DOAC can’t be interrupted or dose adjusted, however, Paxlovid should not be given, the experts said. The antiviral is safe to use with enoxaparin, a low-molecular-weight heparin, but can increase or decrease levels of warfarin and should be used with close international normalized ratio monitoring.

For patients on antiplatelet agents, clinicians are advised to avoid prescribing nirmatrelvir/ritonavir to those on ticagrelor or clopidogrel unless the agents can be replaced by prasugrel.

Ritonavir – an inhibitor of cytochrome P 450 enzymes, particularly CYP3A4 – poses an increased risk of bleeding when given with ticagrelor, a CYP3A4 substrate, and decreases the active metabolite of clopidogrel, cutting its platelet inhibition by 20%. Although there’s a twofold decrease in the maximum concentration of prasugrel in patients on ritonavir, this does not affect its antiplatelet activity, the paper explains.

Among the lipid-lowering agents, experts suggested temporarily withholding atorvastatin, rosuvastatin, simvastatin, and lovastatin because of an increased risk for myopathy and liver toxicity but say that other statins, fibrates, ezetimibe, and the proprotein convertase subtilisin/kexin type 9 inhibitors evolocumab and alirocumab are safe to coadminister with Paxlovid.

While statins typically leave the body within hours, most of the antiarrhythmic drugs, except for sotalol, are not safe to give with Paxlovid, Dr. Ganatra said. It’s technically not feasible to hold these drugs because most have long half-lives, reaching about 100 days, for example, for amiodarone.

“It’s going to hang around in your system for a long time, so you don’t want to be falsely reassured that you’re holding the drug and it’s going to be fine to go back slowly,” he said. “You need to look for alternative therapies in those scenarios for COVID-19 treatment, which could be other antivirals, or a monoclonal antibody individualized to the patient’s risk.”

Although there’s limited clinical information regarding interaction-related adverse events with Paxlovid, the team used pharmacokinetics and pharmacodynamics data to provide the guidance. Serious adverse events are also well documented for ritonavir, which has been prescribed for years to treat HIV, Dr. Ganatra noted.

The Infectious Disease Society of America also published guidance on the management of potential drug interactions with Paxlovid in May and, earlier in October, the Food and Drug Administration updated its Paxlovid patient eligibility screening checklist.

Still, most prescribers are actually primary care physicians and even pharmacists, who may not be completely attuned, said Dr. Ganatra, who noted that some centers have started programs to help connect primary care physicians with their cardiology colleagues to check on CV drugs in their COVID-19 patients.

“We need to be thinking more broadly and at a system level where the hospital or health care system leverages the electronic health record systems,” he said. “Most of them are sophisticated enough to incorporate simple drug-drug interaction information, so if you try to prescribe someone Paxlovid and it’s a heart transplant patient who is on immunosuppressive therapy or a patient on a blood thinner, then it should give you a warning ... or at least give them a link to our paper or other valuable resources.

“If someone is on a blood thinner and the blood thinner level goes up by ninefold, we can only imagine what we would be dealing with,” Dr. Ganatra said. “So, these interactions should be taken very seriously and I think it’s worth the time and investment.”

The authors reported no relevant financial relationships.

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

Nirmatrelvir/ritonavir (Paxlovid) has been a game changer for high-risk patients with early COVID-19 symptoms but has significant interactions with commonly used cardiovascular medications, a new paper cautions.

COVID-19 patients with cardiovascular disease (CVD) or risk factors such as diabetes, hypertension, and chronic kidney disease are at high risk of severe disease and account for the lion’s share of those receiving Paxlovid. Data from the initial EPIC-HR trial and recent real-world data also suggest they’re among the most likely to benefit from the oral antiviral, regardless of their COVID-19 vaccination status.

ClaudioVentrella/Thinkstock

“But at the same time, it unfortunately interacts with many very commonly prescribed cardiovascular medications and with many of them in a very clinically meaningful way, which may lead to serious adverse consequences,” senior author Sarju Ganatra, MD, said in an interview. “So, while it’s being prescribed with a good intention to help these people, we may actually end up doing more harm than good.

“We don’t want to deter people from getting their necessary COVID-19 treatment, which is excellent for the most part these days as an outpatient,” he added. “So, we felt the need to make a comprehensive list of cardiac medications and level of interactions with Paxlovid and also to help the clinicians and prescribers at the point of care to make the clinical decision of what modifications they may need to do.”

The paper, published online in the Journal of the American College of Cardiology, details drug-drug interactions with some 80 CV medications including statins, antihypertensive agents, heart failure therapies, and antiplatelet/anticoagulants.

It also includes a color-coded figure denoting whether a drug is safe to coadminister with Paxlovid, may potentially interact and require a dose adjustment or temporary discontinuation, or is contraindicated.

Among the commonly used blood thinners, for example, the paper notes that Paxlovid significantly increases drug levels of the direct oral anticoagulants (DOACs) apixaban, rivaroxaban, edoxaban, and dabigatran and, thus, increases the risk of bleeding.

“It can still be administered, if it’s necessary, but the dose of the DOAC either needs to be reduced or held depending on what they are getting it for, whether they’re getting it for pulmonary embolism or atrial fibrillation, and we adjust for all those things in the table in the paper,” said Dr. Ganatra, from Lahey Hospital and Medical Center, Burlington, Mass.

When the DOAC can’t be interrupted or dose adjusted, however, Paxlovid should not be given, the experts said. The antiviral is safe to use with enoxaparin, a low-molecular-weight heparin, but can increase or decrease levels of warfarin and should be used with close international normalized ratio monitoring.

For patients on antiplatelet agents, clinicians are advised to avoid prescribing nirmatrelvir/ritonavir to those on ticagrelor or clopidogrel unless the agents can be replaced by prasugrel.

Ritonavir – an inhibitor of cytochrome P 450 enzymes, particularly CYP3A4 – poses an increased risk of bleeding when given with ticagrelor, a CYP3A4 substrate, and decreases the active metabolite of clopidogrel, cutting its platelet inhibition by 20%. Although there’s a twofold decrease in the maximum concentration of prasugrel in patients on ritonavir, this does not affect its antiplatelet activity, the paper explains.

Among the lipid-lowering agents, experts suggested temporarily withholding atorvastatin, rosuvastatin, simvastatin, and lovastatin because of an increased risk for myopathy and liver toxicity but say that other statins, fibrates, ezetimibe, and the proprotein convertase subtilisin/kexin type 9 inhibitors evolocumab and alirocumab are safe to coadminister with Paxlovid.

While statins typically leave the body within hours, most of the antiarrhythmic drugs, except for sotalol, are not safe to give with Paxlovid, Dr. Ganatra said. It’s technically not feasible to hold these drugs because most have long half-lives, reaching about 100 days, for example, for amiodarone.

“It’s going to hang around in your system for a long time, so you don’t want to be falsely reassured that you’re holding the drug and it’s going to be fine to go back slowly,” he said. “You need to look for alternative therapies in those scenarios for COVID-19 treatment, which could be other antivirals, or a monoclonal antibody individualized to the patient’s risk.”

Although there’s limited clinical information regarding interaction-related adverse events with Paxlovid, the team used pharmacokinetics and pharmacodynamics data to provide the guidance. Serious adverse events are also well documented for ritonavir, which has been prescribed for years to treat HIV, Dr. Ganatra noted.

The Infectious Disease Society of America also published guidance on the management of potential drug interactions with Paxlovid in May and, earlier in October, the Food and Drug Administration updated its Paxlovid patient eligibility screening checklist.

Still, most prescribers are actually primary care physicians and even pharmacists, who may not be completely attuned, said Dr. Ganatra, who noted that some centers have started programs to help connect primary care physicians with their cardiology colleagues to check on CV drugs in their COVID-19 patients.

“We need to be thinking more broadly and at a system level where the hospital or health care system leverages the electronic health record systems,” he said. “Most of them are sophisticated enough to incorporate simple drug-drug interaction information, so if you try to prescribe someone Paxlovid and it’s a heart transplant patient who is on immunosuppressive therapy or a patient on a blood thinner, then it should give you a warning ... or at least give them a link to our paper or other valuable resources.

“If someone is on a blood thinner and the blood thinner level goes up by ninefold, we can only imagine what we would be dealing with,” Dr. Ganatra said. “So, these interactions should be taken very seriously and I think it’s worth the time and investment.”

The authors reported no relevant financial relationships.

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

Cardiac biomarkers vary according to sex hormones in healthy transgender adults, just as in cisgender individuals, a new cross-sectional study suggests.

Previous research in the general population has shown that females have a lower 99th percentile upper reference limit for high-sensitivity cardiac troponin (hs-cTn) than males, whereas N-terminal prohormone brain natriuretic peptide (NT-proBNP) concentrations are higher in females than males across all ages after puberty.

“That trend is similar for people that have been on gender-affirming hormones, saying that sex hormones are playing a role in how cardiac turnover happens in a healthy state,” study author Dina M. Greene, PhD, University of Washington, Seattle, said in an interview.

Although the number of transgender people seeking gender-affirming care is increasing, studies are limited and largely retrospective cohorts, she noted. The scientific literature evaluating and defining cardiac biomarker concentrations is “currently absent.”

The American Heart Association’s recent scientific statement on the cardiovascular health of transgender and gender diverse (TGD) people says mounting evidence points to worse CV health in TGD people and that part of this excess risk is driven by significant psychosocial stressors across the lifespan. “In addition, the use of gender-affirming hormone therapy may be associated with cardiometabolic changes, but health research in this area remains limited and, at times, contradictory.”

For the present study, Dr. Greene and colleagues reached out to LGBTQ-oriented primary care and internal medicine clinics in Seattle and Iowa City to recruit 79 transgender men prescribed testosterone (mean age, 28.8 years) and 93 transgender women (mean age, 35.1 years) prescribed estradiol for at least 12 months. The mean duration of hormone therapy was 4.8 and 3.5 years, respectively.

The median estradiol concentration was 51 pg/mL in transgender men and 207 pg/mL in transgender women. Median testosterone concentrations were 4.6 ng/mL and 0.4 ng/mL, respectively.

The cardiac biomarkers were measured with the ARCHITECT STAT (Abbott Diagnostics) and ACCESS (Beckman Coulter) high-sensitivity troponin I assays, the Elecsys Troponin T Gen 5 STAT assay (Roche Diagnostics), and the Elecsys ProBNP II immunoassay (Roche Diagnostics).

As reported in JAMA Cardiology, the median hs-cTnI level on the ARCHITECT STAT assay was 0.9 ng/L (range, 0.6-1.7) in transgender men and 0.6 ng/L (range, 0.3-1.0) in transgender women. The pattern was consistent across the two other assays.

In contrast, the median NT-proBNP level was 17 ng/L (range, 13-27) in transgender men and 49 ng/L (range, 32-86) in transgender women.

“It seems that sex hormone concentration is a stronger driver of baseline cardiac troponin and NT-proBNP concentrations relative to sex assigned at birth,” Dr. Greene said.

The observed differences in hs-cTn concentrations “are likely physiological and not pathological,” given that concentrations between healthy cisgender people are also apparent and not thought to portend adverse events, the authors noted.

Teasing out the clinical implications of sex-specific hs-cTn upper reference limits for ruling in acute myocardial infarction (MI), however, is complicated by biological and social factors that contribute to poorer outcomes in women, despite lower baseline levels, they added. “Ultimately, the psychosocial benefits of gender-affirming hormones are substantial, and informed consent is likely the ideal method to balance the undetermined risks.”

Dr. Greene pointed out that the study wasn’t powered to accurately calculate gender-specific hs-cTn 99th percentiles or reference intervals for NT-proBNP and assessed the biomarkers at a single time point.

For the transgender person presenting with chest pain, she said, the clinical implications are not yet known, but the data suggest that when sex-specific 99th percentiles for hs-cTn are used, the numeric value associated with the affirmed gender, rather than the sex assigned at birth, may be the appropriate URL.

“It really depends on what the triage pathway is and if that pathway has differences for people of different sexes and how often people get serial measurements,” Dr. Greene said. “Within this population, it’s very important to look at those serial measurements because for people that are not cismen, those 99th percentiles when they’re non–sex specific, are going to favor in detection of a heart attack. So, you need to look at the second value to make sure there hasn’t been a change over time.”

The observed differences in the distribution of NT-proBNP concentrations is similar to that in the cisgender population, Dr. Greene noted. But these differences do not lead to sex-specific diagnostic thresholds because of the significant elevations present in overt heart failure and cardiovascular disease. “For NT-proBNP, it’s not as important. People don’t usually have a little bit of heart failure, they have heart failure, where people have small MIs.”

Dr. Greene said she would like to see larger trials looking at biomarker measurements and cardiac imaging before hormone therapy but that the biggest issue is the need for inclusion of transgender people in all cardiovascular trials.

“The sample sizes are never going to be as big as we get for cisgender people for a number of reasons but ensuring that it’s something that’s being asked on intake and monitored over time so we can understand how transgender people fit into the general population for cardiac disease,” Dr. Greene said. “And so, we can normalize that they exist. I keep driving this point home, but this is the biggest thing right now when it’s such a political issue.”

The study was supported in part by the department of laboratory medicine at the University of Washington, the department of pathology at the University of Iowa, and a grant from Abbott Diagnostics for in-kind high-sensitivity cardiac troponin I reagent. One coauthor reported financial relationships with Siemens Healthineers, Roche Diagnostics, Beckman Coulter, Becton, Dickinson, Abbott Diagnostics, Quidel Diagnostics, Sphingotech, and PixCell Medical. No other disclosures were reported.

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

Cardiac biomarkers vary according to sex hormones in healthy transgender adults, just as in cisgender individuals, a new cross-sectional study suggests.

Previous research in the general population has shown that females have a lower 99th percentile upper reference limit for high-sensitivity cardiac troponin (hs-cTn) than males, whereas N-terminal prohormone brain natriuretic peptide (NT-proBNP) concentrations are higher in females than males across all ages after puberty.

“That trend is similar for people that have been on gender-affirming hormones, saying that sex hormones are playing a role in how cardiac turnover happens in a healthy state,” study author Dina M. Greene, PhD, University of Washington, Seattle, said in an interview.

Although the number of transgender people seeking gender-affirming care is increasing, studies are limited and largely retrospective cohorts, she noted. The scientific literature evaluating and defining cardiac biomarker concentrations is “currently absent.”

The American Heart Association’s recent scientific statement on the cardiovascular health of transgender and gender diverse (TGD) people says mounting evidence points to worse CV health in TGD people and that part of this excess risk is driven by significant psychosocial stressors across the lifespan. “In addition, the use of gender-affirming hormone therapy may be associated with cardiometabolic changes, but health research in this area remains limited and, at times, contradictory.”

For the present study, Dr. Greene and colleagues reached out to LGBTQ-oriented primary care and internal medicine clinics in Seattle and Iowa City to recruit 79 transgender men prescribed testosterone (mean age, 28.8 years) and 93 transgender women (mean age, 35.1 years) prescribed estradiol for at least 12 months. The mean duration of hormone therapy was 4.8 and 3.5 years, respectively.

The median estradiol concentration was 51 pg/mL in transgender men and 207 pg/mL in transgender women. Median testosterone concentrations were 4.6 ng/mL and 0.4 ng/mL, respectively.

The cardiac biomarkers were measured with the ARCHITECT STAT (Abbott Diagnostics) and ACCESS (Beckman Coulter) high-sensitivity troponin I assays, the Elecsys Troponin T Gen 5 STAT assay (Roche Diagnostics), and the Elecsys ProBNP II immunoassay (Roche Diagnostics).

As reported in JAMA Cardiology, the median hs-cTnI level on the ARCHITECT STAT assay was 0.9 ng/L (range, 0.6-1.7) in transgender men and 0.6 ng/L (range, 0.3-1.0) in transgender women. The pattern was consistent across the two other assays.

In contrast, the median NT-proBNP level was 17 ng/L (range, 13-27) in transgender men and 49 ng/L (range, 32-86) in transgender women.

“It seems that sex hormone concentration is a stronger driver of baseline cardiac troponin and NT-proBNP concentrations relative to sex assigned at birth,” Dr. Greene said.

The observed differences in hs-cTn concentrations “are likely physiological and not pathological,” given that concentrations between healthy cisgender people are also apparent and not thought to portend adverse events, the authors noted.

Teasing out the clinical implications of sex-specific hs-cTn upper reference limits for ruling in acute myocardial infarction (MI), however, is complicated by biological and social factors that contribute to poorer outcomes in women, despite lower baseline levels, they added. “Ultimately, the psychosocial benefits of gender-affirming hormones are substantial, and informed consent is likely the ideal method to balance the undetermined risks.”

Dr. Greene pointed out that the study wasn’t powered to accurately calculate gender-specific hs-cTn 99th percentiles or reference intervals for NT-proBNP and assessed the biomarkers at a single time point.

For the transgender person presenting with chest pain, she said, the clinical implications are not yet known, but the data suggest that when sex-specific 99th percentiles for hs-cTn are used, the numeric value associated with the affirmed gender, rather than the sex assigned at birth, may be the appropriate URL.

“It really depends on what the triage pathway is and if that pathway has differences for people of different sexes and how often people get serial measurements,” Dr. Greene said. “Within this population, it’s very important to look at those serial measurements because for people that are not cismen, those 99th percentiles when they’re non–sex specific, are going to favor in detection of a heart attack. So, you need to look at the second value to make sure there hasn’t been a change over time.”

The observed differences in the distribution of NT-proBNP concentrations is similar to that in the cisgender population, Dr. Greene noted. But these differences do not lead to sex-specific diagnostic thresholds because of the significant elevations present in overt heart failure and cardiovascular disease. “For NT-proBNP, it’s not as important. People don’t usually have a little bit of heart failure, they have heart failure, where people have small MIs.”

Dr. Greene said she would like to see larger trials looking at biomarker measurements and cardiac imaging before hormone therapy but that the biggest issue is the need for inclusion of transgender people in all cardiovascular trials.

“The sample sizes are never going to be as big as we get for cisgender people for a number of reasons but ensuring that it’s something that’s being asked on intake and monitored over time so we can understand how transgender people fit into the general population for cardiac disease,” Dr. Greene said. “And so, we can normalize that they exist. I keep driving this point home, but this is the biggest thing right now when it’s such a political issue.”

The study was supported in part by the department of laboratory medicine at the University of Washington, the department of pathology at the University of Iowa, and a grant from Abbott Diagnostics for in-kind high-sensitivity cardiac troponin I reagent. One coauthor reported financial relationships with Siemens Healthineers, Roche Diagnostics, Beckman Coulter, Becton, Dickinson, Abbott Diagnostics, Quidel Diagnostics, Sphingotech, and PixCell Medical. No other disclosures were reported.

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

Cardiac biomarkers vary according to sex hormones in healthy transgender adults, just as in cisgender individuals, a new cross-sectional study suggests.

Previous research in the general population has shown that females have a lower 99th percentile upper reference limit for high-sensitivity cardiac troponin (hs-cTn) than males, whereas N-terminal prohormone brain natriuretic peptide (NT-proBNP) concentrations are higher in females than males across all ages after puberty.

“That trend is similar for people that have been on gender-affirming hormones, saying that sex hormones are playing a role in how cardiac turnover happens in a healthy state,” study author Dina M. Greene, PhD, University of Washington, Seattle, said in an interview.

Although the number of transgender people seeking gender-affirming care is increasing, studies are limited and largely retrospective cohorts, she noted. The scientific literature evaluating and defining cardiac biomarker concentrations is “currently absent.”

The American Heart Association’s recent scientific statement on the cardiovascular health of transgender and gender diverse (TGD) people says mounting evidence points to worse CV health in TGD people and that part of this excess risk is driven by significant psychosocial stressors across the lifespan. “In addition, the use of gender-affirming hormone therapy may be associated with cardiometabolic changes, but health research in this area remains limited and, at times, contradictory.”

For the present study, Dr. Greene and colleagues reached out to LGBTQ-oriented primary care and internal medicine clinics in Seattle and Iowa City to recruit 79 transgender men prescribed testosterone (mean age, 28.8 years) and 93 transgender women (mean age, 35.1 years) prescribed estradiol for at least 12 months. The mean duration of hormone therapy was 4.8 and 3.5 years, respectively.

The median estradiol concentration was 51 pg/mL in transgender men and 207 pg/mL in transgender women. Median testosterone concentrations were 4.6 ng/mL and 0.4 ng/mL, respectively.

The cardiac biomarkers were measured with the ARCHITECT STAT (Abbott Diagnostics) and ACCESS (Beckman Coulter) high-sensitivity troponin I assays, the Elecsys Troponin T Gen 5 STAT assay (Roche Diagnostics), and the Elecsys ProBNP II immunoassay (Roche Diagnostics).

As reported in JAMA Cardiology, the median hs-cTnI level on the ARCHITECT STAT assay was 0.9 ng/L (range, 0.6-1.7) in transgender men and 0.6 ng/L (range, 0.3-1.0) in transgender women. The pattern was consistent across the two other assays.

In contrast, the median NT-proBNP level was 17 ng/L (range, 13-27) in transgender men and 49 ng/L (range, 32-86) in transgender women.

“It seems that sex hormone concentration is a stronger driver of baseline cardiac troponin and NT-proBNP concentrations relative to sex assigned at birth,” Dr. Greene said.

The observed differences in hs-cTn concentrations “are likely physiological and not pathological,” given that concentrations between healthy cisgender people are also apparent and not thought to portend adverse events, the authors noted.

Teasing out the clinical implications of sex-specific hs-cTn upper reference limits for ruling in acute myocardial infarction (MI), however, is complicated by biological and social factors that contribute to poorer outcomes in women, despite lower baseline levels, they added. “Ultimately, the psychosocial benefits of gender-affirming hormones are substantial, and informed consent is likely the ideal method to balance the undetermined risks.”

Dr. Greene pointed out that the study wasn’t powered to accurately calculate gender-specific hs-cTn 99th percentiles or reference intervals for NT-proBNP and assessed the biomarkers at a single time point.

For the transgender person presenting with chest pain, she said, the clinical implications are not yet known, but the data suggest that when sex-specific 99th percentiles for hs-cTn are used, the numeric value associated with the affirmed gender, rather than the sex assigned at birth, may be the appropriate URL.

“It really depends on what the triage pathway is and if that pathway has differences for people of different sexes and how often people get serial measurements,” Dr. Greene said. “Within this population, it’s very important to look at those serial measurements because for people that are not cismen, those 99th percentiles when they’re non–sex specific, are going to favor in detection of a heart attack. So, you need to look at the second value to make sure there hasn’t been a change over time.”

The observed differences in the distribution of NT-proBNP concentrations is similar to that in the cisgender population, Dr. Greene noted. But these differences do not lead to sex-specific diagnostic thresholds because of the significant elevations present in overt heart failure and cardiovascular disease. “For NT-proBNP, it’s not as important. People don’t usually have a little bit of heart failure, they have heart failure, where people have small MIs.”

Dr. Greene said she would like to see larger trials looking at biomarker measurements and cardiac imaging before hormone therapy but that the biggest issue is the need for inclusion of transgender people in all cardiovascular trials.

“The sample sizes are never going to be as big as we get for cisgender people for a number of reasons but ensuring that it’s something that’s being asked on intake and monitored over time so we can understand how transgender people fit into the general population for cardiac disease,” Dr. Greene said. “And so, we can normalize that they exist. I keep driving this point home, but this is the biggest thing right now when it’s such a political issue.”

The study was supported in part by the department of laboratory medicine at the University of Washington, the department of pathology at the University of Iowa, and a grant from Abbott Diagnostics for in-kind high-sensitivity cardiac troponin I reagent. One coauthor reported financial relationships with Siemens Healthineers, Roche Diagnostics, Beckman Coulter, Becton, Dickinson, Abbott Diagnostics, Quidel Diagnostics, Sphingotech, and PixCell Medical. No other disclosures were reported.

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

A new statement from the American College of Cardiology is calling for a greater degree of career flexibility in the specialty to promote cardiologists’ personal and professional well-being and preserve excellence in patient care.

The statement recommends that cardiologists, from trainees to those contemplating retirement, be granted more leeway in their careers to allow them to take time for common life events, such as child-rearing, taking care of aged parents, or reducing their workload in case of poor health or physical disabilities, without jeopardizing their careers.

The “2022 ACC Health Policy Statement on Career Flexibility in Cardiology: A Report of the American College of Cardiology Solution Set Oversight Committee” was published online in the Journal of the American College of Cardiology.
 

‘Hard-driving profession’

The well-being of the cardiovascular workforce is critical to the achievement of the mission of the ACC, which is to transform cardiovascular care and improve heart health, the Health Policy writing committee stated. Career flexibility is an important component of ensuring that well-being, the authors wrote.

“The ACC has critically looked at the factors that contribute to the lack of diversity and inclusion in cardiovascular practice, and one of the issues is the lack of flexibility in our profession,” writing committee chair, Mary Norine Walsh, MD, medical director of the heart failure and cardiac transplantation programs, Ascension St. Vincent Heart Center, Indianapolis, Ind., told this news organization.

The notion of work-life balance has become increasingly important but cardiology as a profession has traditionally not been open to the idea of its value, Dr. Walsh said.

“We have a very hard-driving profession. It takes many years to train to do the work we do. The need for on-call services is very significant, and we go along because we have always done it this way, but if you don’t reexamine the way that you are structuring your work, you’ll never change it,” she said.

“For example, the ‘full time, full call, come to work after you’ve been up all night’ work ethic, which is no longer allowed for trainees, is still in effect once you get into university practice or clinical practice. We have interventional cardiologists up all night doing STEMI care for patients and then having a full clinic the next day,” Dr. Walsh said. “The changes that came about for trainees have not trickled up to the faculty or clinical practice level. It’s really a patient safety issue.”

She emphasized that the new policy statement is not focused solely on women. “The need for time away or flexible time around family planning, childbirth, and parental leave is increasingly important to our younger colleagues, both men and women.”

Dr. Walsh pointed out that the writing committee was carefully composed to include representation from all stakeholders.

“We have representation from very young cardiologists, one of whom was in training at the time we began our work. We have two systems CEOs who are cardiologists, we have a chair of medicine, we have two very senior cardiologists, and someone who works in industry,” she said.

The ACC also believes that cardiologists with physically demanding roles should have pathways to transition into other opportunities in patient care, research, or education.

“Right now, there are many cardiology practices that have traditional policies, where you are either all in, or you are all out. They do not allow for what we term a ‘step down’ policy, where you perhaps stop going into the cath lab, but you still do clinic and see patients,” Dr. Walsh noted.

“One of the goals of this policy statement is to allow for such practices to look at their compensation and structure, and to realize that their most senior cardiologists may be willing to stay on for several more years and be contributing members to the practice, but they may no longer wish to stay in the cath lab or be in the night call pool,” she said.

Transparency around compensation is also very important because cardiologists contemplating a reduced work schedule need to know how this will affect the amount of money they will be earning, she added.

“Transparency about policies around compensation are crucial because if an individual cardiologist wishes to pursue a flexible scheduling at any time in their career, it’s clear that they won’t have the same compensation as someone who is a full-time employee. All of this has to be very transparent and clear on both sides, so that the person deciding toward some flexibility understands what the implications are from a financial and compensation standpoint,” Dr. Walsh said.

As an example, a senior career cardiologist who no longer wants to take night calls should know what this may cost financially.

“The practice should set a valuation of night calls, so that the individual who makes the choice to step out of the call pool understands what the impact on their compensation will be. That type of transparency is necessary for all to ensure that individuals who seek flexibility will not be blindsided by the resulting decrease in financial compensation,” she said.
 

A growing need

“In its new health policy statement, the American College of Cardiology addresses the growing need for career flexibility as an important component of ensuring the well-being of the cardiovascular care workforce,” Harlan M. Krumholz, MD, SM, Harold H. Hines Jr. Professor of Medicine and professor in the Institute for Social and Policy Studies at Yale University, New Haven, Conn., told this news organization.

Courtesy Yale University

“The writing committee reviews opportunities for offering flexibility at all career levels to combat burnout and increase retention in the field, as well as proposes system, policy, and practice solutions to allow both men and women to emphasize and embrace work-life balance,” Dr. Krumholz said.

“The document provides pathways for cardiologists looking to pursue other interests or career transitions while maintaining excellence in clinical care,” he added. “Chief among these recommendations are flexible/part-time hours, leave and reentry policies, changes in job descriptions to support overarching cultural change, and equitable compensation and opportunities. The document is intended to be used as a guide for innovation in the cardiology workforce.”
 

‘Thoughtful and long overdue’

“This policy statement is thoughtful and long overdue,” Steven E. Nissen, MD, Lewis and Patricia Dickey Chair in Cardiovascular Medicine and professor of medicine at Cleveland Clinic, told this news organization.

“Career flexibility will allow cardiologists to fulfill family responsibilities while continuing to advance their careers. Successfully contributing to patient care and research does not require physicians to isolate themselves from all their other responsibilities,” Dr. Nissen added.

“I am pleased that the ACC has articulated the value of a balanced approach to career and family.”

Dr. Walsh, Dr. Krumholz, and Dr. Nissen report no relevant financial relationships.

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

A new statement from the American College of Cardiology is calling for a greater degree of career flexibility in the specialty to promote cardiologists’ personal and professional well-being and preserve excellence in patient care.

The statement recommends that cardiologists, from trainees to those contemplating retirement, be granted more leeway in their careers to allow them to take time for common life events, such as child-rearing, taking care of aged parents, or reducing their workload in case of poor health or physical disabilities, without jeopardizing their careers.

The “2022 ACC Health Policy Statement on Career Flexibility in Cardiology: A Report of the American College of Cardiology Solution Set Oversight Committee” was published online in the Journal of the American College of Cardiology.
 

‘Hard-driving profession’

The well-being of the cardiovascular workforce is critical to the achievement of the mission of the ACC, which is to transform cardiovascular care and improve heart health, the Health Policy writing committee stated. Career flexibility is an important component of ensuring that well-being, the authors wrote.

“The ACC has critically looked at the factors that contribute to the lack of diversity and inclusion in cardiovascular practice, and one of the issues is the lack of flexibility in our profession,” writing committee chair, Mary Norine Walsh, MD, medical director of the heart failure and cardiac transplantation programs, Ascension St. Vincent Heart Center, Indianapolis, Ind., told this news organization.

The notion of work-life balance has become increasingly important but cardiology as a profession has traditionally not been open to the idea of its value, Dr. Walsh said.

“We have a very hard-driving profession. It takes many years to train to do the work we do. The need for on-call services is very significant, and we go along because we have always done it this way, but if you don’t reexamine the way that you are structuring your work, you’ll never change it,” she said.

“For example, the ‘full time, full call, come to work after you’ve been up all night’ work ethic, which is no longer allowed for trainees, is still in effect once you get into university practice or clinical practice. We have interventional cardiologists up all night doing STEMI care for patients and then having a full clinic the next day,” Dr. Walsh said. “The changes that came about for trainees have not trickled up to the faculty or clinical practice level. It’s really a patient safety issue.”

She emphasized that the new policy statement is not focused solely on women. “The need for time away or flexible time around family planning, childbirth, and parental leave is increasingly important to our younger colleagues, both men and women.”

Dr. Walsh pointed out that the writing committee was carefully composed to include representation from all stakeholders.

“We have representation from very young cardiologists, one of whom was in training at the time we began our work. We have two systems CEOs who are cardiologists, we have a chair of medicine, we have two very senior cardiologists, and someone who works in industry,” she said.

The ACC also believes that cardiologists with physically demanding roles should have pathways to transition into other opportunities in patient care, research, or education.

“Right now, there are many cardiology practices that have traditional policies, where you are either all in, or you are all out. They do not allow for what we term a ‘step down’ policy, where you perhaps stop going into the cath lab, but you still do clinic and see patients,” Dr. Walsh noted.

“One of the goals of this policy statement is to allow for such practices to look at their compensation and structure, and to realize that their most senior cardiologists may be willing to stay on for several more years and be contributing members to the practice, but they may no longer wish to stay in the cath lab or be in the night call pool,” she said.

Transparency around compensation is also very important because cardiologists contemplating a reduced work schedule need to know how this will affect the amount of money they will be earning, she added.

“Transparency about policies around compensation are crucial because if an individual cardiologist wishes to pursue a flexible scheduling at any time in their career, it’s clear that they won’t have the same compensation as someone who is a full-time employee. All of this has to be very transparent and clear on both sides, so that the person deciding toward some flexibility understands what the implications are from a financial and compensation standpoint,” Dr. Walsh said.

As an example, a senior career cardiologist who no longer wants to take night calls should know what this may cost financially.

“The practice should set a valuation of night calls, so that the individual who makes the choice to step out of the call pool understands what the impact on their compensation will be. That type of transparency is necessary for all to ensure that individuals who seek flexibility will not be blindsided by the resulting decrease in financial compensation,” she said.
 

A growing need

“In its new health policy statement, the American College of Cardiology addresses the growing need for career flexibility as an important component of ensuring the well-being of the cardiovascular care workforce,” Harlan M. Krumholz, MD, SM, Harold H. Hines Jr. Professor of Medicine and professor in the Institute for Social and Policy Studies at Yale University, New Haven, Conn., told this news organization.

Courtesy Yale University

“The writing committee reviews opportunities for offering flexibility at all career levels to combat burnout and increase retention in the field, as well as proposes system, policy, and practice solutions to allow both men and women to emphasize and embrace work-life balance,” Dr. Krumholz said.

“The document provides pathways for cardiologists looking to pursue other interests or career transitions while maintaining excellence in clinical care,” he added. “Chief among these recommendations are flexible/part-time hours, leave and reentry policies, changes in job descriptions to support overarching cultural change, and equitable compensation and opportunities. The document is intended to be used as a guide for innovation in the cardiology workforce.”
 

‘Thoughtful and long overdue’

“This policy statement is thoughtful and long overdue,” Steven E. Nissen, MD, Lewis and Patricia Dickey Chair in Cardiovascular Medicine and professor of medicine at Cleveland Clinic, told this news organization.

“Career flexibility will allow cardiologists to fulfill family responsibilities while continuing to advance their careers. Successfully contributing to patient care and research does not require physicians to isolate themselves from all their other responsibilities,” Dr. Nissen added.

“I am pleased that the ACC has articulated the value of a balanced approach to career and family.”

Dr. Walsh, Dr. Krumholz, and Dr. Nissen report no relevant financial relationships.

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

A new statement from the American College of Cardiology is calling for a greater degree of career flexibility in the specialty to promote cardiologists’ personal and professional well-being and preserve excellence in patient care.

The statement recommends that cardiologists, from trainees to those contemplating retirement, be granted more leeway in their careers to allow them to take time for common life events, such as child-rearing, taking care of aged parents, or reducing their workload in case of poor health or physical disabilities, without jeopardizing their careers.

The “2022 ACC Health Policy Statement on Career Flexibility in Cardiology: A Report of the American College of Cardiology Solution Set Oversight Committee” was published online in the Journal of the American College of Cardiology.
 

‘Hard-driving profession’

The well-being of the cardiovascular workforce is critical to the achievement of the mission of the ACC, which is to transform cardiovascular care and improve heart health, the Health Policy writing committee stated. Career flexibility is an important component of ensuring that well-being, the authors wrote.

“The ACC has critically looked at the factors that contribute to the lack of diversity and inclusion in cardiovascular practice, and one of the issues is the lack of flexibility in our profession,” writing committee chair, Mary Norine Walsh, MD, medical director of the heart failure and cardiac transplantation programs, Ascension St. Vincent Heart Center, Indianapolis, Ind., told this news organization.

The notion of work-life balance has become increasingly important but cardiology as a profession has traditionally not been open to the idea of its value, Dr. Walsh said.

“We have a very hard-driving profession. It takes many years to train to do the work we do. The need for on-call services is very significant, and we go along because we have always done it this way, but if you don’t reexamine the way that you are structuring your work, you’ll never change it,” she said.

“For example, the ‘full time, full call, come to work after you’ve been up all night’ work ethic, which is no longer allowed for trainees, is still in effect once you get into university practice or clinical practice. We have interventional cardiologists up all night doing STEMI care for patients and then having a full clinic the next day,” Dr. Walsh said. “The changes that came about for trainees have not trickled up to the faculty or clinical practice level. It’s really a patient safety issue.”

She emphasized that the new policy statement is not focused solely on women. “The need for time away or flexible time around family planning, childbirth, and parental leave is increasingly important to our younger colleagues, both men and women.”

Dr. Walsh pointed out that the writing committee was carefully composed to include representation from all stakeholders.

“We have representation from very young cardiologists, one of whom was in training at the time we began our work. We have two systems CEOs who are cardiologists, we have a chair of medicine, we have two very senior cardiologists, and someone who works in industry,” she said.

The ACC also believes that cardiologists with physically demanding roles should have pathways to transition into other opportunities in patient care, research, or education.

“Right now, there are many cardiology practices that have traditional policies, where you are either all in, or you are all out. They do not allow for what we term a ‘step down’ policy, where you perhaps stop going into the cath lab, but you still do clinic and see patients,” Dr. Walsh noted.

“One of the goals of this policy statement is to allow for such practices to look at their compensation and structure, and to realize that their most senior cardiologists may be willing to stay on for several more years and be contributing members to the practice, but they may no longer wish to stay in the cath lab or be in the night call pool,” she said.

Transparency around compensation is also very important because cardiologists contemplating a reduced work schedule need to know how this will affect the amount of money they will be earning, she added.

“Transparency about policies around compensation are crucial because if an individual cardiologist wishes to pursue a flexible scheduling at any time in their career, it’s clear that they won’t have the same compensation as someone who is a full-time employee. All of this has to be very transparent and clear on both sides, so that the person deciding toward some flexibility understands what the implications are from a financial and compensation standpoint,” Dr. Walsh said.

As an example, a senior career cardiologist who no longer wants to take night calls should know what this may cost financially.

“The practice should set a valuation of night calls, so that the individual who makes the choice to step out of the call pool understands what the impact on their compensation will be. That type of transparency is necessary for all to ensure that individuals who seek flexibility will not be blindsided by the resulting decrease in financial compensation,” she said.
 

A growing need

“In its new health policy statement, the American College of Cardiology addresses the growing need for career flexibility as an important component of ensuring the well-being of the cardiovascular care workforce,” Harlan M. Krumholz, MD, SM, Harold H. Hines Jr. Professor of Medicine and professor in the Institute for Social and Policy Studies at Yale University, New Haven, Conn., told this news organization.

Courtesy Yale University

“The writing committee reviews opportunities for offering flexibility at all career levels to combat burnout and increase retention in the field, as well as proposes system, policy, and practice solutions to allow both men and women to emphasize and embrace work-life balance,” Dr. Krumholz said.

“The document provides pathways for cardiologists looking to pursue other interests or career transitions while maintaining excellence in clinical care,” he added. “Chief among these recommendations are flexible/part-time hours, leave and reentry policies, changes in job descriptions to support overarching cultural change, and equitable compensation and opportunities. The document is intended to be used as a guide for innovation in the cardiology workforce.”
 

‘Thoughtful and long overdue’

“This policy statement is thoughtful and long overdue,” Steven E. Nissen, MD, Lewis and Patricia Dickey Chair in Cardiovascular Medicine and professor of medicine at Cleveland Clinic, told this news organization.

“Career flexibility will allow cardiologists to fulfill family responsibilities while continuing to advance their careers. Successfully contributing to patient care and research does not require physicians to isolate themselves from all their other responsibilities,” Dr. Nissen added.

“I am pleased that the ACC has articulated the value of a balanced approach to career and family.”

Dr. Walsh, Dr. Krumholz, and Dr. Nissen report no relevant financial relationships.

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

The substantial reductions in cardiovascular disease (CVD) and all-cause mortality achieved with intensive blood pressure lowering in the landmark SPRINT trial were not sustained in a newly released long-term follow-up.

The loss of the mortality benefits corresponded with a steady climb in the average systolic blood pressures (SBP) in the intensive treatment group after the trial ended. The long-term benefit serves as a call to develop better strategies for sustained SBP control.

“We were disappointed but not surprised that the blood pressure levels in the intensive goal group were not sustained,” acknowledged William C. Cushman, MD, Medical Director, department of preventive medicine, University of Tennessee Health Science Center, Memphis. “There are many trials showing no residual or legacy effect once the intervention is stopped.”
 

Long-term results do not weaken SPRINT

One of the coinvestigators of this most recent analysis published in JAMA Cardiology and a member of the SPRINT writing committee at the time of its 2015 publication in the New England Journal of Medicine, Dr. Cushman pointed out that the long-term results do not weaken the main trial result. Long-term adherence was not part of the trial design.

“After the trial, we were no longer treating these participants, so it was up to them and their primary care providers to decide on blood pressure goals,” he noted in an interview. Based on the trajectory of benefit when the study was stopped, “it is possible longer intensive treatment may lead to more benefit and some long-term residual benefits.”

The senior author of this most recent analysis, Nicholas M. Pajewski, PhD, associate professor of biostatistics and data science, Wake Forest University, Winston-Salem, N.C., generally agreed. However, he pointed out that the most recent data do not rule out meaningful benefit after the study ended.

For one reason, the loss of the SBP advantage was gradual so that median SBP levels of the two groups did not meet for nearly 3 years. This likely explains why there was still an attenuation of CVD mortality for several years after the all-cause mortality benefit was lost, according to Dr. Pajewski.

“It is important to mention that we were not able to assess nonfatal cardiovascular events, so while the two groups do eventually come together, if one thinks about the distinction of healthspan versus lifespan, there was probably residual benefit in terms of delaying CVD morbidity and mortality,” Dr. Pajewski said.
 

In SPRINT, CVD mortality reduced 43%

In the 9,631-patient SPRINT trial, the intensive treatment group achieved a mean SBP of 121.4 mm Hg versus 136.2 mm Hg in the standard treatment group at the end of 1 year. The trial was stopped early after 3.26 years because of strength of the benefit in the intensive treatment arm. At that time, the reductions by hazard ratio were 25% (HR, 0.75; P < .001) for a composite major adverse cardiovascular event (MACE) endpoint, 43% for CVD mortality (P = .005), and 27% for all-cause mortality (P = .003).

In the new observational follow-up, mortality data were drawn from the National Death Index, and change in SBP from electronic health records in a subset of 2,944 SPRINT trial participants. Data were available and analyzed through 2020.

The newly published long-term observational analysis showed that the median SBP in the intensive treatment arm was already climbing by the end of the end of the trial. It reached 132.8 mm Hg at 5 years after randomization and then 140.4 mm Hg by 10 years.

This latter figure was essentially equivalent to the SBP among those who were initially randomized to the standard treatment arm.
 

Factors driving rising BP are unclear

There is limited information on what medications were taken by either group following the end of the trial, so the reason for the regression in the intensive treatment arm after leaving the trial is unknown. The authors speculated that this might have been due to therapeutic inertia among treating physicians, poor adherence among patients, the difficulty of keeping blood pressures low in patients with advancing pathology, or some combination of these.

“Perhaps the most important reason was that providers and patients were not aiming for the lower goals since guidelines did not recommend these targets until 2017,” Dr. Cushman pointed out. He noted that Healthcare Effectiveness Data and Information Set (HEDIS) “has still not adopted a performance measure goal of less than 140 mm Hg.”

In an accompanying editorial, the authors focused on what these data mean for population-based strategies to achieve sustained control of one of the most important risk factors for cardiovascular events. Led by Daniel W. Jones, MD, director of clinical and population science, University of Mississippi, Jackson, the authors of the editorial wrote that these data emphasized “the challenge of achieving sustained intensive BP reductions in the real-world setting.”

Basically, the editorial concluded that current approaches to achieving meaningful and sustained blood pressure control are not working.

This study “should be a wakeup call, but other previously published good data have also been ignored,” said Dr. Jones in an interview. Despite the compelling benefit from intensive blood pressure control the SPRINT trial, the observational follow-up emphasizes the difficulty of maintaining the rigorous reductions in blood pressure needed for sustained protection.

“Systemic change is necessary,” said Dr. Jones, reprising the major thrust of the editorial he wrote with Donald Clark III, MD, and Michael E. Hall, MD, who are both colleagues at the University of Mississippi.

“My view is that health care providers should be held responsible for motivating better compliance of their patients, just as a teacher is accountable for the outcomes of their students,” he said.

The solutions are not likely to be simple. Dr. Jones called for multiple strategies, such as employing telehealth and community health workers to monitor and reinforce blood pressure control, but he said that these and other data have convinced him that “simply trying harder at what we currently do” is not enough.

Dr. Pajewski and Dr. Jones report no potential conflicts of interest. Dr. Cushman reports a financial relationship with ReCor.

The substantial reductions in cardiovascular disease (CVD) and all-cause mortality achieved with intensive blood pressure lowering in the landmark SPRINT trial were not sustained in a newly released long-term follow-up.

The loss of the mortality benefits corresponded with a steady climb in the average systolic blood pressures (SBP) in the intensive treatment group after the trial ended. The long-term benefit serves as a call to develop better strategies for sustained SBP control.

“We were disappointed but not surprised that the blood pressure levels in the intensive goal group were not sustained,” acknowledged William C. Cushman, MD, Medical Director, department of preventive medicine, University of Tennessee Health Science Center, Memphis. “There are many trials showing no residual or legacy effect once the intervention is stopped.”
 

Long-term results do not weaken SPRINT

One of the coinvestigators of this most recent analysis published in JAMA Cardiology and a member of the SPRINT writing committee at the time of its 2015 publication in the New England Journal of Medicine, Dr. Cushman pointed out that the long-term results do not weaken the main trial result. Long-term adherence was not part of the trial design.

“After the trial, we were no longer treating these participants, so it was up to them and their primary care providers to decide on blood pressure goals,” he noted in an interview. Based on the trajectory of benefit when the study was stopped, “it is possible longer intensive treatment may lead to more benefit and some long-term residual benefits.”

The senior author of this most recent analysis, Nicholas M. Pajewski, PhD, associate professor of biostatistics and data science, Wake Forest University, Winston-Salem, N.C., generally agreed. However, he pointed out that the most recent data do not rule out meaningful benefit after the study ended.

For one reason, the loss of the SBP advantage was gradual so that median SBP levels of the two groups did not meet for nearly 3 years. This likely explains why there was still an attenuation of CVD mortality for several years after the all-cause mortality benefit was lost, according to Dr. Pajewski.

“It is important to mention that we were not able to assess nonfatal cardiovascular events, so while the two groups do eventually come together, if one thinks about the distinction of healthspan versus lifespan, there was probably residual benefit in terms of delaying CVD morbidity and mortality,” Dr. Pajewski said.
 

In SPRINT, CVD mortality reduced 43%

In the 9,631-patient SPRINT trial, the intensive treatment group achieved a mean SBP of 121.4 mm Hg versus 136.2 mm Hg in the standard treatment group at the end of 1 year. The trial was stopped early after 3.26 years because of strength of the benefit in the intensive treatment arm. At that time, the reductions by hazard ratio were 25% (HR, 0.75; P < .001) for a composite major adverse cardiovascular event (MACE) endpoint, 43% for CVD mortality (P = .005), and 27% for all-cause mortality (P = .003).

In the new observational follow-up, mortality data were drawn from the National Death Index, and change in SBP from electronic health records in a subset of 2,944 SPRINT trial participants. Data were available and analyzed through 2020.

The newly published long-term observational analysis showed that the median SBP in the intensive treatment arm was already climbing by the end of the end of the trial. It reached 132.8 mm Hg at 5 years after randomization and then 140.4 mm Hg by 10 years.

This latter figure was essentially equivalent to the SBP among those who were initially randomized to the standard treatment arm.
 

Factors driving rising BP are unclear

There is limited information on what medications were taken by either group following the end of the trial, so the reason for the regression in the intensive treatment arm after leaving the trial is unknown. The authors speculated that this might have been due to therapeutic inertia among treating physicians, poor adherence among patients, the difficulty of keeping blood pressures low in patients with advancing pathology, or some combination of these.

“Perhaps the most important reason was that providers and patients were not aiming for the lower goals since guidelines did not recommend these targets until 2017,” Dr. Cushman pointed out. He noted that Healthcare Effectiveness Data and Information Set (HEDIS) “has still not adopted a performance measure goal of less than 140 mm Hg.”

In an accompanying editorial, the authors focused on what these data mean for population-based strategies to achieve sustained control of one of the most important risk factors for cardiovascular events. Led by Daniel W. Jones, MD, director of clinical and population science, University of Mississippi, Jackson, the authors of the editorial wrote that these data emphasized “the challenge of achieving sustained intensive BP reductions in the real-world setting.”

Basically, the editorial concluded that current approaches to achieving meaningful and sustained blood pressure control are not working.

This study “should be a wakeup call, but other previously published good data have also been ignored,” said Dr. Jones in an interview. Despite the compelling benefit from intensive blood pressure control the SPRINT trial, the observational follow-up emphasizes the difficulty of maintaining the rigorous reductions in blood pressure needed for sustained protection.

“Systemic change is necessary,” said Dr. Jones, reprising the major thrust of the editorial he wrote with Donald Clark III, MD, and Michael E. Hall, MD, who are both colleagues at the University of Mississippi.

“My view is that health care providers should be held responsible for motivating better compliance of their patients, just as a teacher is accountable for the outcomes of their students,” he said.

The solutions are not likely to be simple. Dr. Jones called for multiple strategies, such as employing telehealth and community health workers to monitor and reinforce blood pressure control, but he said that these and other data have convinced him that “simply trying harder at what we currently do” is not enough.

Dr. Pajewski and Dr. Jones report no potential conflicts of interest. Dr. Cushman reports a financial relationship with ReCor.

The substantial reductions in cardiovascular disease (CVD) and all-cause mortality achieved with intensive blood pressure lowering in the landmark SPRINT trial were not sustained in a newly released long-term follow-up.

The loss of the mortality benefits corresponded with a steady climb in the average systolic blood pressures (SBP) in the intensive treatment group after the trial ended. The long-term benefit serves as a call to develop better strategies for sustained SBP control.

“We were disappointed but not surprised that the blood pressure levels in the intensive goal group were not sustained,” acknowledged William C. Cushman, MD, Medical Director, department of preventive medicine, University of Tennessee Health Science Center, Memphis. “There are many trials showing no residual or legacy effect once the intervention is stopped.”
 

Long-term results do not weaken SPRINT

One of the coinvestigators of this most recent analysis published in JAMA Cardiology and a member of the SPRINT writing committee at the time of its 2015 publication in the New England Journal of Medicine, Dr. Cushman pointed out that the long-term results do not weaken the main trial result. Long-term adherence was not part of the trial design.

“After the trial, we were no longer treating these participants, so it was up to them and their primary care providers to decide on blood pressure goals,” he noted in an interview. Based on the trajectory of benefit when the study was stopped, “it is possible longer intensive treatment may lead to more benefit and some long-term residual benefits.”

The senior author of this most recent analysis, Nicholas M. Pajewski, PhD, associate professor of biostatistics and data science, Wake Forest University, Winston-Salem, N.C., generally agreed. However, he pointed out that the most recent data do not rule out meaningful benefit after the study ended.

For one reason, the loss of the SBP advantage was gradual so that median SBP levels of the two groups did not meet for nearly 3 years. This likely explains why there was still an attenuation of CVD mortality for several years after the all-cause mortality benefit was lost, according to Dr. Pajewski.

“It is important to mention that we were not able to assess nonfatal cardiovascular events, so while the two groups do eventually come together, if one thinks about the distinction of healthspan versus lifespan, there was probably residual benefit in terms of delaying CVD morbidity and mortality,” Dr. Pajewski said.
 

In SPRINT, CVD mortality reduced 43%

In the 9,631-patient SPRINT trial, the intensive treatment group achieved a mean SBP of 121.4 mm Hg versus 136.2 mm Hg in the standard treatment group at the end of 1 year. The trial was stopped early after 3.26 years because of strength of the benefit in the intensive treatment arm. At that time, the reductions by hazard ratio were 25% (HR, 0.75; P < .001) for a composite major adverse cardiovascular event (MACE) endpoint, 43% for CVD mortality (P = .005), and 27% for all-cause mortality (P = .003).

In the new observational follow-up, mortality data were drawn from the National Death Index, and change in SBP from electronic health records in a subset of 2,944 SPRINT trial participants. Data were available and analyzed through 2020.

The newly published long-term observational analysis showed that the median SBP in the intensive treatment arm was already climbing by the end of the end of the trial. It reached 132.8 mm Hg at 5 years after randomization and then 140.4 mm Hg by 10 years.

This latter figure was essentially equivalent to the SBP among those who were initially randomized to the standard treatment arm.
 

Factors driving rising BP are unclear

There is limited information on what medications were taken by either group following the end of the trial, so the reason for the regression in the intensive treatment arm after leaving the trial is unknown. The authors speculated that this might have been due to therapeutic inertia among treating physicians, poor adherence among patients, the difficulty of keeping blood pressures low in patients with advancing pathology, or some combination of these.

“Perhaps the most important reason was that providers and patients were not aiming for the lower goals since guidelines did not recommend these targets until 2017,” Dr. Cushman pointed out. He noted that Healthcare Effectiveness Data and Information Set (HEDIS) “has still not adopted a performance measure goal of less than 140 mm Hg.”

In an accompanying editorial, the authors focused on what these data mean for population-based strategies to achieve sustained control of one of the most important risk factors for cardiovascular events. Led by Daniel W. Jones, MD, director of clinical and population science, University of Mississippi, Jackson, the authors of the editorial wrote that these data emphasized “the challenge of achieving sustained intensive BP reductions in the real-world setting.”

Basically, the editorial concluded that current approaches to achieving meaningful and sustained blood pressure control are not working.

This study “should be a wakeup call, but other previously published good data have also been ignored,” said Dr. Jones in an interview. Despite the compelling benefit from intensive blood pressure control the SPRINT trial, the observational follow-up emphasizes the difficulty of maintaining the rigorous reductions in blood pressure needed for sustained protection.

“Systemic change is necessary,” said Dr. Jones, reprising the major thrust of the editorial he wrote with Donald Clark III, MD, and Michael E. Hall, MD, who are both colleagues at the University of Mississippi.

“My view is that health care providers should be held responsible for motivating better compliance of their patients, just as a teacher is accountable for the outcomes of their students,” he said.

The solutions are not likely to be simple. Dr. Jones called for multiple strategies, such as employing telehealth and community health workers to monitor and reinforce blood pressure control, but he said that these and other data have convinced him that “simply trying harder at what we currently do” is not enough.

Dr. Pajewski and Dr. Jones report no potential conflicts of interest. Dr. Cushman reports a financial relationship with ReCor.

STOCKHOLM – New insights into the benefits of treatment with the “twincretin” tirzepatide for people with overweight or obesity – with or without diabetes – come from new findings reported at the annual meeting of the European Association for the Study of Diabetes.

Additional results from the SURMOUNT-1 trial, which matched tirzepatide against placebo in people with overweight or obesity, provide further details on the favorable changes produced by 72 weeks of tirzepatide treatment on outcomes that included fat and lean mass, insulin sensitivity, and patient-reported outcomes related to functional health and well being, reported Ania M. Jastreboff, MD, PhD.

Mitchel L. Zoler/MDedge News

And results from a meta-analysis of six trials that compared tirzepatide (Mounjaro) against several different comparators in patients with type 2 diabetes further confirm the drug’s ability to reliably produce positive changes in blood lipids, especially by significantly lowering levels of triglycerides, LDL cholesterol, and very LDL (VLDL) cholesterol, said Thomas Karagiannis, MD, PhD, in a separate report at the meeting.

Tirzepatide works as an agonist on receptors for both the glucagonlike peptide–1 (GLP-1), and for the glucose-dependent insulinotropic polypeptide, and received Food and Drug Administration approval for treating people with type 2 diabetes in May 2022. On the basis of results from SURMOUNT-1, the FDA on Oct. 6 granted tirzepatide fast-track designation for a proposed labeling of the agent for treating people with overweight or obesity. This FDA decision will likely remain pending at least until results from a second trial in people with overweight or obesity but without diabetes, SURMOUNT-2, become available in 2023.

SURMOUNT-1 randomized 2,539 people with obesity or overweight and at least one weight-related complication to a weekly injection of tirzepatide or placebo for 72 weeks. The study’s primary efficacy endpoints were the average reduction in weight from baseline, and the percentage of people in each treatment arm achieving weight loss of at least 5% from baseline.

For both endpoints, the outcomes with tirzepatide significantly surpassed placebo effects. Average weight loss ranged from 15%-21% from baseline, depending on dose, compared with 3% on placebo. The rate of participants with at least a 5% weight loss ranged from 85% to 91%, compared with 35% with placebo, as reported in July 2022 in the New England Journal of Medicine.

Cutting fat mass, boosting lean mass

New results from the trial reported by Dr. Jastreboff included a cut in fat mass from 46.2% of total body mass at baseline to 38.5% after 72 weeks, compared with a change from 46.8% at baseline to 44.7% after 72 weeks in the placebo group. Concurrently, lean mass increased with tirzepatide treatment from 51.0% at baseline to 58.1% after 72 weeks.

Participants who received tirzepatide, compared with those who received placebo, had “proportionately greater decrease in fat mass and proportionately greater increase in lean mass” compared with those who received placebo, said Dr. Jastreboff, an endocrinologist and obesity medicine specialist with Yale Medicine in New Haven, Conn. “I was impressed by the amount of visceral fat lost.”

These effects translated into a significant reduction in fat mass-to-lean mass ratio among the people treated with tirzepatide, with the greatest reduction in those who lost at least 15% of their starting weight. In that subgroup the fat-to-lean mass ratio dropped from 0.94 at baseline to 0.64 after 72 weeks of treatment, she said.
 

Focus on diet quality

People treated with tirzepatide “eat so little food that we need to improve the quality of what they eat to protect their muscle,” commented Carel le Roux, MBChB, PhD, a professor in the Diabetes Complications Research Centre of University College Dublin. “You no longer need a dietitian to help people lose weight, because the drug does that. You need dietitians to look after the nutritional health of patients while they lose weight,” Dr. le Roux said in a separate session at the meeting.

Mitchel L. Zoler/MDedge News

Additional tests showed that blood glucose and insulin levels were all significantly lower among trial participants on all three doses of tirzepatide compared with those on placebo, and the tirzepatide-treated subjects also had significant, roughly twofold elevations in their insulin sensitivity measured by the Matsuda Index.

The impact of tirzepatide on glucose and insulin levels and on insulin sensitivity was similar regardless of whether study participants had normoglycemia or prediabetes at entry. By design, no study participants had diabetes.

The trial assessed patient-reported quality-of-life outcomes using the 36-Item Short Form Survey (SF-36). Participants had significant increases in all eight domains within the SF-36 at all three tirzepatide doses, compared with placebo, at 72 weeks, Dr. Jastreboff reported. Improvements in the physical function domain increased most notably among study participants on tirzepatide who had functional limitations at baseline. Heart rate rose among participants who received either of the two highest tirzepatide doses by 2.3-2.5 beats/min, comparable with the effect of other injected incretin-based treatments.

Lipids improve in those with type 2 diabetes

Tirzepatide treatment also results in a “secondary effect” of improving levels of several lipids in people with type 2 diabetes, according to a meta-analysis of findings from six randomized trials. The meta-analysis collectively involved 4,502 participants treated for numerous weeks with one of three doses of tirzepatide and 2,144 people in comparator groups, reported Dr. Karagiannis, a diabetes researcher at Aristotle University of Thessaloniki (Greece).

Among the significant lipid changes linked with tirzepatide treatment, compared with placebo, were an average 13 mg/dL decrease in LDL cholesterol, an average 6 mg/dL decrease in VLDL cholesterol, and an average 50 mg/dL decrease in triglycerides. In comparison to a GLP-1 receptor agonist, an average 25 mg/dL decrease in triglycerides and an average 4 mg/dL reduction in VLDL cholesterol were seen. And trials comparing tirzepatide with basal insulin saw average reductions of 7% in LDL cholesterol, 15% in VLDL cholesterol, 15% in triglycerides, and an 8% increase in HDL cholesterol.

Dr. Karagiannis highlighted that the clinical impact of these effects is unclear, although he noted that the average reduction in LDL cholesterol relative to placebo is of a magnitude that could have a modest effect on long-term outcomes.

These lipid effects of tirzepatide “should be considered alongside” tirzepatide’s “key metabolic effects” on weight and hemoglobin A1c as well as the drug’s safety, concluded Dr. Karagiannis.

The tirzepatide trials were all funded by Eli Lilly, which markets tirzepatide (Mounjaro). Dr. Jastreboff has been an adviser and consultant to Eli Lilly, as well as to Intellihealth, Novo Nordisk, Pfizer, Rhythm Scholars, Roche, and Weight Watchers, and she has received research funding from Eli Lilly and Novo Nordisk. Dr. Karagiannis had no disclosures. Dr. le Roux has had financial relationships with Eli Lilly, as well as with Boehringer Ingelheim, Consilient Health, Covidion, Fractyl, GL Dynamics, Herbalife, Johnson & Johnson, Keyron, and Novo Nordisk.

STOCKHOLM – New insights into the benefits of treatment with the “twincretin” tirzepatide for people with overweight or obesity – with or without diabetes – come from new findings reported at the annual meeting of the European Association for the Study of Diabetes.

Additional results from the SURMOUNT-1 trial, which matched tirzepatide against placebo in people with overweight or obesity, provide further details on the favorable changes produced by 72 weeks of tirzepatide treatment on outcomes that included fat and lean mass, insulin sensitivity, and patient-reported outcomes related to functional health and well being, reported Ania M. Jastreboff, MD, PhD.

Mitchel L. Zoler/MDedge News

And results from a meta-analysis of six trials that compared tirzepatide (Mounjaro) against several different comparators in patients with type 2 diabetes further confirm the drug’s ability to reliably produce positive changes in blood lipids, especially by significantly lowering levels of triglycerides, LDL cholesterol, and very LDL (VLDL) cholesterol, said Thomas Karagiannis, MD, PhD, in a separate report at the meeting.

Tirzepatide works as an agonist on receptors for both the glucagonlike peptide–1 (GLP-1), and for the glucose-dependent insulinotropic polypeptide, and received Food and Drug Administration approval for treating people with type 2 diabetes in May 2022. On the basis of results from SURMOUNT-1, the FDA on Oct. 6 granted tirzepatide fast-track designation for a proposed labeling of the agent for treating people with overweight or obesity. This FDA decision will likely remain pending at least until results from a second trial in people with overweight or obesity but without diabetes, SURMOUNT-2, become available in 2023.

SURMOUNT-1 randomized 2,539 people with obesity or overweight and at least one weight-related complication to a weekly injection of tirzepatide or placebo for 72 weeks. The study’s primary efficacy endpoints were the average reduction in weight from baseline, and the percentage of people in each treatment arm achieving weight loss of at least 5% from baseline.

For both endpoints, the outcomes with tirzepatide significantly surpassed placebo effects. Average weight loss ranged from 15%-21% from baseline, depending on dose, compared with 3% on placebo. The rate of participants with at least a 5% weight loss ranged from 85% to 91%, compared with 35% with placebo, as reported in July 2022 in the New England Journal of Medicine.

Cutting fat mass, boosting lean mass

New results from the trial reported by Dr. Jastreboff included a cut in fat mass from 46.2% of total body mass at baseline to 38.5% after 72 weeks, compared with a change from 46.8% at baseline to 44.7% after 72 weeks in the placebo group. Concurrently, lean mass increased with tirzepatide treatment from 51.0% at baseline to 58.1% after 72 weeks.

Participants who received tirzepatide, compared with those who received placebo, had “proportionately greater decrease in fat mass and proportionately greater increase in lean mass” compared with those who received placebo, said Dr. Jastreboff, an endocrinologist and obesity medicine specialist with Yale Medicine in New Haven, Conn. “I was impressed by the amount of visceral fat lost.”

These effects translated into a significant reduction in fat mass-to-lean mass ratio among the people treated with tirzepatide, with the greatest reduction in those who lost at least 15% of their starting weight. In that subgroup the fat-to-lean mass ratio dropped from 0.94 at baseline to 0.64 after 72 weeks of treatment, she said.
 

Focus on diet quality

People treated with tirzepatide “eat so little food that we need to improve the quality of what they eat to protect their muscle,” commented Carel le Roux, MBChB, PhD, a professor in the Diabetes Complications Research Centre of University College Dublin. “You no longer need a dietitian to help people lose weight, because the drug does that. You need dietitians to look after the nutritional health of patients while they lose weight,” Dr. le Roux said in a separate session at the meeting.

Mitchel L. Zoler/MDedge News

Additional tests showed that blood glucose and insulin levels were all significantly lower among trial participants on all three doses of tirzepatide compared with those on placebo, and the tirzepatide-treated subjects also had significant, roughly twofold elevations in their insulin sensitivity measured by the Matsuda Index.

The impact of tirzepatide on glucose and insulin levels and on insulin sensitivity was similar regardless of whether study participants had normoglycemia or prediabetes at entry. By design, no study participants had diabetes.

The trial assessed patient-reported quality-of-life outcomes using the 36-Item Short Form Survey (SF-36). Participants had significant increases in all eight domains within the SF-36 at all three tirzepatide doses, compared with placebo, at 72 weeks, Dr. Jastreboff reported. Improvements in the physical function domain increased most notably among study participants on tirzepatide who had functional limitations at baseline. Heart rate rose among participants who received either of the two highest tirzepatide doses by 2.3-2.5 beats/min, comparable with the effect of other injected incretin-based treatments.

Lipids improve in those with type 2 diabetes

Tirzepatide treatment also results in a “secondary effect” of improving levels of several lipids in people with type 2 diabetes, according to a meta-analysis of findings from six randomized trials. The meta-analysis collectively involved 4,502 participants treated for numerous weeks with one of three doses of tirzepatide and 2,144 people in comparator groups, reported Dr. Karagiannis, a diabetes researcher at Aristotle University of Thessaloniki (Greece).

Among the significant lipid changes linked with tirzepatide treatment, compared with placebo, were an average 13 mg/dL decrease in LDL cholesterol, an average 6 mg/dL decrease in VLDL cholesterol, and an average 50 mg/dL decrease in triglycerides. In comparison to a GLP-1 receptor agonist, an average 25 mg/dL decrease in triglycerides and an average 4 mg/dL reduction in VLDL cholesterol were seen. And trials comparing tirzepatide with basal insulin saw average reductions of 7% in LDL cholesterol, 15% in VLDL cholesterol, 15% in triglycerides, and an 8% increase in HDL cholesterol.

Dr. Karagiannis highlighted that the clinical impact of these effects is unclear, although he noted that the average reduction in LDL cholesterol relative to placebo is of a magnitude that could have a modest effect on long-term outcomes.

These lipid effects of tirzepatide “should be considered alongside” tirzepatide’s “key metabolic effects” on weight and hemoglobin A1c as well as the drug’s safety, concluded Dr. Karagiannis.

The tirzepatide trials were all funded by Eli Lilly, which markets tirzepatide (Mounjaro). Dr. Jastreboff has been an adviser and consultant to Eli Lilly, as well as to Intellihealth, Novo Nordisk, Pfizer, Rhythm Scholars, Roche, and Weight Watchers, and she has received research funding from Eli Lilly and Novo Nordisk. Dr. Karagiannis had no disclosures. Dr. le Roux has had financial relationships with Eli Lilly, as well as with Boehringer Ingelheim, Consilient Health, Covidion, Fractyl, GL Dynamics, Herbalife, Johnson & Johnson, Keyron, and Novo Nordisk.

STOCKHOLM – New insights into the benefits of treatment with the “twincretin” tirzepatide for people with overweight or obesity – with or without diabetes – come from new findings reported at the annual meeting of the European Association for the Study of Diabetes.

Additional results from the SURMOUNT-1 trial, which matched tirzepatide against placebo in people with overweight or obesity, provide further details on the favorable changes produced by 72 weeks of tirzepatide treatment on outcomes that included fat and lean mass, insulin sensitivity, and patient-reported outcomes related to functional health and well being, reported Ania M. Jastreboff, MD, PhD.

Mitchel L. Zoler/MDedge News

And results from a meta-analysis of six trials that compared tirzepatide (Mounjaro) against several different comparators in patients with type 2 diabetes further confirm the drug’s ability to reliably produce positive changes in blood lipids, especially by significantly lowering levels of triglycerides, LDL cholesterol, and very LDL (VLDL) cholesterol, said Thomas Karagiannis, MD, PhD, in a separate report at the meeting.

Tirzepatide works as an agonist on receptors for both the glucagonlike peptide–1 (GLP-1), and for the glucose-dependent insulinotropic polypeptide, and received Food and Drug Administration approval for treating people with type 2 diabetes in May 2022. On the basis of results from SURMOUNT-1, the FDA on Oct. 6 granted tirzepatide fast-track designation for a proposed labeling of the agent for treating people with overweight or obesity. This FDA decision will likely remain pending at least until results from a second trial in people with overweight or obesity but without diabetes, SURMOUNT-2, become available in 2023.

SURMOUNT-1 randomized 2,539 people with obesity or overweight and at least one weight-related complication to a weekly injection of tirzepatide or placebo for 72 weeks. The study’s primary efficacy endpoints were the average reduction in weight from baseline, and the percentage of people in each treatment arm achieving weight loss of at least 5% from baseline.

For both endpoints, the outcomes with tirzepatide significantly surpassed placebo effects. Average weight loss ranged from 15%-21% from baseline, depending on dose, compared with 3% on placebo. The rate of participants with at least a 5% weight loss ranged from 85% to 91%, compared with 35% with placebo, as reported in July 2022 in the New England Journal of Medicine.

Cutting fat mass, boosting lean mass

New results from the trial reported by Dr. Jastreboff included a cut in fat mass from 46.2% of total body mass at baseline to 38.5% after 72 weeks, compared with a change from 46.8% at baseline to 44.7% after 72 weeks in the placebo group. Concurrently, lean mass increased with tirzepatide treatment from 51.0% at baseline to 58.1% after 72 weeks.

Participants who received tirzepatide, compared with those who received placebo, had “proportionately greater decrease in fat mass and proportionately greater increase in lean mass” compared with those who received placebo, said Dr. Jastreboff, an endocrinologist and obesity medicine specialist with Yale Medicine in New Haven, Conn. “I was impressed by the amount of visceral fat lost.”

These effects translated into a significant reduction in fat mass-to-lean mass ratio among the people treated with tirzepatide, with the greatest reduction in those who lost at least 15% of their starting weight. In that subgroup the fat-to-lean mass ratio dropped from 0.94 at baseline to 0.64 after 72 weeks of treatment, she said.
 

Focus on diet quality

People treated with tirzepatide “eat so little food that we need to improve the quality of what they eat to protect their muscle,” commented Carel le Roux, MBChB, PhD, a professor in the Diabetes Complications Research Centre of University College Dublin. “You no longer need a dietitian to help people lose weight, because the drug does that. You need dietitians to look after the nutritional health of patients while they lose weight,” Dr. le Roux said in a separate session at the meeting.

Mitchel L. Zoler/MDedge News

Additional tests showed that blood glucose and insulin levels were all significantly lower among trial participants on all three doses of tirzepatide compared with those on placebo, and the tirzepatide-treated subjects also had significant, roughly twofold elevations in their insulin sensitivity measured by the Matsuda Index.

The impact of tirzepatide on glucose and insulin levels and on insulin sensitivity was similar regardless of whether study participants had normoglycemia or prediabetes at entry. By design, no study participants had diabetes.

The trial assessed patient-reported quality-of-life outcomes using the 36-Item Short Form Survey (SF-36). Participants had significant increases in all eight domains within the SF-36 at all three tirzepatide doses, compared with placebo, at 72 weeks, Dr. Jastreboff reported. Improvements in the physical function domain increased most notably among study participants on tirzepatide who had functional limitations at baseline. Heart rate rose among participants who received either of the two highest tirzepatide doses by 2.3-2.5 beats/min, comparable with the effect of other injected incretin-based treatments.

Lipids improve in those with type 2 diabetes

Tirzepatide treatment also results in a “secondary effect” of improving levels of several lipids in people with type 2 diabetes, according to a meta-analysis of findings from six randomized trials. The meta-analysis collectively involved 4,502 participants treated for numerous weeks with one of three doses of tirzepatide and 2,144 people in comparator groups, reported Dr. Karagiannis, a diabetes researcher at Aristotle University of Thessaloniki (Greece).

Among the significant lipid changes linked with tirzepatide treatment, compared with placebo, were an average 13 mg/dL decrease in LDL cholesterol, an average 6 mg/dL decrease in VLDL cholesterol, and an average 50 mg/dL decrease in triglycerides. In comparison to a GLP-1 receptor agonist, an average 25 mg/dL decrease in triglycerides and an average 4 mg/dL reduction in VLDL cholesterol were seen. And trials comparing tirzepatide with basal insulin saw average reductions of 7% in LDL cholesterol, 15% in VLDL cholesterol, 15% in triglycerides, and an 8% increase in HDL cholesterol.

Dr. Karagiannis highlighted that the clinical impact of these effects is unclear, although he noted that the average reduction in LDL cholesterol relative to placebo is of a magnitude that could have a modest effect on long-term outcomes.

These lipid effects of tirzepatide “should be considered alongside” tirzepatide’s “key metabolic effects” on weight and hemoglobin A1c as well as the drug’s safety, concluded Dr. Karagiannis.

The tirzepatide trials were all funded by Eli Lilly, which markets tirzepatide (Mounjaro). Dr. Jastreboff has been an adviser and consultant to Eli Lilly, as well as to Intellihealth, Novo Nordisk, Pfizer, Rhythm Scholars, Roche, and Weight Watchers, and she has received research funding from Eli Lilly and Novo Nordisk. Dr. Karagiannis had no disclosures. Dr. le Roux has had financial relationships with Eli Lilly, as well as with Boehringer Ingelheim, Consilient Health, Covidion, Fractyl, GL Dynamics, Herbalife, Johnson & Johnson, Keyron, and Novo Nordisk.

Weight loss after bariatric surgery was linked with visceral fat reduction as well as reduced blood pressure, fasting glucose, and left ventricular remodeling, based an imaging study in 213 patients.

“We found that ventricular function measured by strain imaging improved in both the left and right sides of the heart, but function measured in the traditional method using endocardial motion [in other words, ejection fraction] actually worsened,” senior investigator Barry A. Borlaug, MD, said in an interview.

Although previous studies have shown positive effects of weight loss on the heart after bariatric surgery, most have been short term and have not specifically examined the effects of visceral fat reduction, wrote the investigators.

“We are in the middle of an increasing epidemic of obesity worldwide, but particularly in the United States, where it is currently projected that one in two adults will be obese by 2030,” added Dr. Borlaug of Mayo Clinic, Rochester, Minn. “Heart failure with preserved ejection fraction (HFpEF) is growing in tandem, and numerous recent studies have shown that obesity is one of the strongest risk factors for developing HFpEF, and that the severity of HFpEF is intimately linked to excess body fat. This suggests that therapies to reduce body fat could improve the cardiac abnormalities that cause HFpEF, which was our focus in this study,” he explained.

In the study, published in the Journal of the American College of Cardiology, the researchers reviewed echocardiography data from 213 obese patients before and more than 180 days after bariatric surgery. They also measured abdominal visceral adipose tissue (VAT) of 52 patients via computed tomography. The average age of the patients was 54 years, the average body mass index was 45 kg/m², and 67% were women. Comorbidities included hypertension, diabetes, dyslipidemia, and obstructive sleep apnea.

The primary outcome was changes in cardiac structure and function.

After a median follow-up of 5.3 years, patients overall averaged a 23% reduction in body weight and a 22% reduction in BMI. In the 52 patients with abdominal scans, the VAT area decreased by 30% overall. Changes in left ventricular mass were significantly correlated to changes in the VAT.

Epicardial adipose thickness decreased by 14% overall. Left and right ventricular longitudinal strains improved at follow-up, but left atrial strain deteriorated, the researchers noted.

Although the mechanism of action remains unclear, the results suggest that left ventricular remodeling was associated with visceral adiposity rather than subcutaneous fat, the researchers wrote.

They also found that right ventricular strain was negatively correlated with VAT, but not with body weight or BMI.

“These findings suggest that weight loss, particularly reduction in visceral adiposity, benefits [right ventricular] structure and function in a manner akin to that observed in the [left ventricle],” the researchers noted.

Some surprises and limitations

Dr. Borlaug said he found some, but not all, of the results surprising. “Earlier studies had shown evidence for benefit from weight loss on cardiac structure and function, but had been limited by smaller sample sizes, shorter durations of evaluation, and variable methods used,” he said in an interview.

The findings that strain imaging showed both left and right ventricular function improved while EF declined “shows some of the problems with using EF, as it is affected by chamber size and geometry. We have previously shown that patients with HFpEF display an increase in fat around the heart, and this affects cardiac function and interaction between the left and right sides of the heart, so we expected to see that this fat depot would be reduced, and this was indeed the case,” Dr. Borlaug added.

In the current study, “visceral fat was most strongly tied to the heart remodeling in obesity, and changes in visceral fat were most strongly tied to improvements in cardiac structure following weight loss,” Dr. Borlaug told this news organization. “This further supports this concept that excess visceral fat plays a key role in HFpEF, especially in the abdomen and around the heart,” he said.

However, “The biggest surprise was the discordant effects in the left atrium,” Dr. Borlaug said. “Left atrial remodeling and dysfunction play a crucial role in HFpEF as well, and we expected that this would improve following weight loss, but in fact we observed that left atrial function deteriorated, and other indicators of atrial myopathy worsened, including higher estimates of left atrial pressures and increased prevalence of atrial fibrillation,” he said.

This difference emphasizes that weight loss may not address all abnormalities that lead to HFpEF, although a key limitation of the current study was the lack of a control group of patients with the same degree of obesity and no weight-loss intervention, and the deterioration in left atrial function might have been even greater in the absence of weight loss, Dr. Borlaug added.
 

Larger numbers support effects

Previous research shows that structural heart changes associated with obesity can be reversed through weight loss, but the current study fills a gap by providing long-term data in a larger sample than previously studied, wrote Paul Heidenreich, MD, of Stanford (Calif.) University in an accompanying editorial).

“There has been uncertainty regarding the prolonged effect of weight loss on cardiac function; this study was larger than many prior studies and provided a longer follow-up,” Dr. Heidenreich said in an interview.

“One unusual finding was that, while weight loss led to left ventricle reverse remodeling (reduction in wall thickness), the same effect was not seen for the left atrium; the left atrial size continued to increase,” he said. “I would have expected the left atrial changes to mirror the changes in the left ventricle,” he noted.

The findings support the greater cardiac risk of visceral vs. subcutaneous adipose tissue, and although body mass index will retain prognostic value, measures of central obesity are more likely predictors of cardiac structural changes and events and should be reported in clinical studies, Dr. Heidenreich wrote.

However, “We need a better understanding of the factors that influence left atrial remodeling and reverse remodeling,” Dr. Heidenreich told this news organization. “While left ventricular compliance and pressure play a role, there are other factors that need to be elucidated,” he said.

 

Studies in progress may inform practice

The current data call for further study to test novel treatments to facilitate weight loss in patients with HFpEF and those at risk for HFpEF, and some of these studies with medicines are underway, Dr. Borlaug said in the interview.

“Until such studies are completed, we will not truly understand the effects of weight loss on the heart, but the present data certainly provide strong support that patients who have obesity and HFpEF or are at risk for HFpEF should try to lose weight through lifestyle interventions,” he said. 

Whether the cardiac changes seen in the current study would be different with nonsurgical weight loss remains a key question because many obese patients are reluctant to undergo bariatric surgery, Dr. Borlaug said. “We cannot assess whether the effects would differ with nonsurgical weight loss, and this requires further study,” he added.

As for additional research, “Randomized, controlled trials of weight-loss interventions, with appropriate controls and comprehensive assessments of cardiac structure, function, and hemodynamics will be most informative,” said Dr. Borlaug. “Larger trials powered to evaluate cardiovascular outcomes such as heart failure hospitalization or cardiovascular death also are critically important to better understand the role of weight loss to treat and prevent HFpEF, the ultimate form of obesity-related heart disease,” he emphasized.

The study was supported in part by grants to lead author Dr. Hidemi Sorimachi of the Mayo Clinic from the Uehara Memorial Foundation, Japan, and to corresponding author Dr. Borlaug from the National Institutes of Health. Dr. Borlaug also disclosed previous grants from National Institutes of Health/National Heart, Lung, and Blood Institute, AstraZeneca, Corvia, Medtronic, GlaxoSmithKline, Mesoblast, Novartis, and Tenax Therapeutics; and consulting fees from Actelion, Amgen, Aria, Axon Therapies, Boehringer Ingelheim, Edwards Lifesciences, Eli Lilly, Imbria, Janssen, Merck, Novo Nordisk, and VADovations. Dr. Heidenreich had no financial disclosures.

Weight loss after bariatric surgery was linked with visceral fat reduction as well as reduced blood pressure, fasting glucose, and left ventricular remodeling, based an imaging study in 213 patients.

“We found that ventricular function measured by strain imaging improved in both the left and right sides of the heart, but function measured in the traditional method using endocardial motion [in other words, ejection fraction] actually worsened,” senior investigator Barry A. Borlaug, MD, said in an interview.

Although previous studies have shown positive effects of weight loss on the heart after bariatric surgery, most have been short term and have not specifically examined the effects of visceral fat reduction, wrote the investigators.

“We are in the middle of an increasing epidemic of obesity worldwide, but particularly in the United States, where it is currently projected that one in two adults will be obese by 2030,” added Dr. Borlaug of Mayo Clinic, Rochester, Minn. “Heart failure with preserved ejection fraction (HFpEF) is growing in tandem, and numerous recent studies have shown that obesity is one of the strongest risk factors for developing HFpEF, and that the severity of HFpEF is intimately linked to excess body fat. This suggests that therapies to reduce body fat could improve the cardiac abnormalities that cause HFpEF, which was our focus in this study,” he explained.

In the study, published in the Journal of the American College of Cardiology, the researchers reviewed echocardiography data from 213 obese patients before and more than 180 days after bariatric surgery. They also measured abdominal visceral adipose tissue (VAT) of 52 patients via computed tomography. The average age of the patients was 54 years, the average body mass index was 45 kg/m², and 67% were women. Comorbidities included hypertension, diabetes, dyslipidemia, and obstructive sleep apnea.

The primary outcome was changes in cardiac structure and function.

After a median follow-up of 5.3 years, patients overall averaged a 23% reduction in body weight and a 22% reduction in BMI. In the 52 patients with abdominal scans, the VAT area decreased by 30% overall. Changes in left ventricular mass were significantly correlated to changes in the VAT.

Epicardial adipose thickness decreased by 14% overall. Left and right ventricular longitudinal strains improved at follow-up, but left atrial strain deteriorated, the researchers noted.

Although the mechanism of action remains unclear, the results suggest that left ventricular remodeling was associated with visceral adiposity rather than subcutaneous fat, the researchers wrote.

They also found that right ventricular strain was negatively correlated with VAT, but not with body weight or BMI.

“These findings suggest that weight loss, particularly reduction in visceral adiposity, benefits [right ventricular] structure and function in a manner akin to that observed in the [left ventricle],” the researchers noted.

Some surprises and limitations

Dr. Borlaug said he found some, but not all, of the results surprising. “Earlier studies had shown evidence for benefit from weight loss on cardiac structure and function, but had been limited by smaller sample sizes, shorter durations of evaluation, and variable methods used,” he said in an interview.

The findings that strain imaging showed both left and right ventricular function improved while EF declined “shows some of the problems with using EF, as it is affected by chamber size and geometry. We have previously shown that patients with HFpEF display an increase in fat around the heart, and this affects cardiac function and interaction between the left and right sides of the heart, so we expected to see that this fat depot would be reduced, and this was indeed the case,” Dr. Borlaug added.

In the current study, “visceral fat was most strongly tied to the heart remodeling in obesity, and changes in visceral fat were most strongly tied to improvements in cardiac structure following weight loss,” Dr. Borlaug told this news organization. “This further supports this concept that excess visceral fat plays a key role in HFpEF, especially in the abdomen and around the heart,” he said.

However, “The biggest surprise was the discordant effects in the left atrium,” Dr. Borlaug said. “Left atrial remodeling and dysfunction play a crucial role in HFpEF as well, and we expected that this would improve following weight loss, but in fact we observed that left atrial function deteriorated, and other indicators of atrial myopathy worsened, including higher estimates of left atrial pressures and increased prevalence of atrial fibrillation,” he said.

This difference emphasizes that weight loss may not address all abnormalities that lead to HFpEF, although a key limitation of the current study was the lack of a control group of patients with the same degree of obesity and no weight-loss intervention, and the deterioration in left atrial function might have been even greater in the absence of weight loss, Dr. Borlaug added.
 

Larger numbers support effects

Previous research shows that structural heart changes associated with obesity can be reversed through weight loss, but the current study fills a gap by providing long-term data in a larger sample than previously studied, wrote Paul Heidenreich, MD, of Stanford (Calif.) University in an accompanying editorial).

“There has been uncertainty regarding the prolonged effect of weight loss on cardiac function; this study was larger than many prior studies and provided a longer follow-up,” Dr. Heidenreich said in an interview.

“One unusual finding was that, while weight loss led to left ventricle reverse remodeling (reduction in wall thickness), the same effect was not seen for the left atrium; the left atrial size continued to increase,” he said. “I would have expected the left atrial changes to mirror the changes in the left ventricle,” he noted.

The findings support the greater cardiac risk of visceral vs. subcutaneous adipose tissue, and although body mass index will retain prognostic value, measures of central obesity are more likely predictors of cardiac structural changes and events and should be reported in clinical studies, Dr. Heidenreich wrote.

However, “We need a better understanding of the factors that influence left atrial remodeling and reverse remodeling,” Dr. Heidenreich told this news organization. “While left ventricular compliance and pressure play a role, there are other factors that need to be elucidated,” he said.

 

Studies in progress may inform practice

The current data call for further study to test novel treatments to facilitate weight loss in patients with HFpEF and those at risk for HFpEF, and some of these studies with medicines are underway, Dr. Borlaug said in the interview.

“Until such studies are completed, we will not truly understand the effects of weight loss on the heart, but the present data certainly provide strong support that patients who have obesity and HFpEF or are at risk for HFpEF should try to lose weight through lifestyle interventions,” he said. 

Whether the cardiac changes seen in the current study would be different with nonsurgical weight loss remains a key question because many obese patients are reluctant to undergo bariatric surgery, Dr. Borlaug said. “We cannot assess whether the effects would differ with nonsurgical weight loss, and this requires further study,” he added.

As for additional research, “Randomized, controlled trials of weight-loss interventions, with appropriate controls and comprehensive assessments of cardiac structure, function, and hemodynamics will be most informative,” said Dr. Borlaug. “Larger trials powered to evaluate cardiovascular outcomes such as heart failure hospitalization or cardiovascular death also are critically important to better understand the role of weight loss to treat and prevent HFpEF, the ultimate form of obesity-related heart disease,” he emphasized.

The study was supported in part by grants to lead author Dr. Hidemi Sorimachi of the Mayo Clinic from the Uehara Memorial Foundation, Japan, and to corresponding author Dr. Borlaug from the National Institutes of Health. Dr. Borlaug also disclosed previous grants from National Institutes of Health/National Heart, Lung, and Blood Institute, AstraZeneca, Corvia, Medtronic, GlaxoSmithKline, Mesoblast, Novartis, and Tenax Therapeutics; and consulting fees from Actelion, Amgen, Aria, Axon Therapies, Boehringer Ingelheim, Edwards Lifesciences, Eli Lilly, Imbria, Janssen, Merck, Novo Nordisk, and VADovations. Dr. Heidenreich had no financial disclosures.

Weight loss after bariatric surgery was linked with visceral fat reduction as well as reduced blood pressure, fasting glucose, and left ventricular remodeling, based an imaging study in 213 patients.

“We found that ventricular function measured by strain imaging improved in both the left and right sides of the heart, but function measured in the traditional method using endocardial motion [in other words, ejection fraction] actually worsened,” senior investigator Barry A. Borlaug, MD, said in an interview.

Although previous studies have shown positive effects of weight loss on the heart after bariatric surgery, most have been short term and have not specifically examined the effects of visceral fat reduction, wrote the investigators.

“We are in the middle of an increasing epidemic of obesity worldwide, but particularly in the United States, where it is currently projected that one in two adults will be obese by 2030,” added Dr. Borlaug of Mayo Clinic, Rochester, Minn. “Heart failure with preserved ejection fraction (HFpEF) is growing in tandem, and numerous recent studies have shown that obesity is one of the strongest risk factors for developing HFpEF, and that the severity of HFpEF is intimately linked to excess body fat. This suggests that therapies to reduce body fat could improve the cardiac abnormalities that cause HFpEF, which was our focus in this study,” he explained.

In the study, published in the Journal of the American College of Cardiology, the researchers reviewed echocardiography data from 213 obese patients before and more than 180 days after bariatric surgery. They also measured abdominal visceral adipose tissue (VAT) of 52 patients via computed tomography. The average age of the patients was 54 years, the average body mass index was 45 kg/m², and 67% were women. Comorbidities included hypertension, diabetes, dyslipidemia, and obstructive sleep apnea.

The primary outcome was changes in cardiac structure and function.

After a median follow-up of 5.3 years, patients overall averaged a 23% reduction in body weight and a 22% reduction in BMI. In the 52 patients with abdominal scans, the VAT area decreased by 30% overall. Changes in left ventricular mass were significantly correlated to changes in the VAT.

Epicardial adipose thickness decreased by 14% overall. Left and right ventricular longitudinal strains improved at follow-up, but left atrial strain deteriorated, the researchers noted.

Although the mechanism of action remains unclear, the results suggest that left ventricular remodeling was associated with visceral adiposity rather than subcutaneous fat, the researchers wrote.

They also found that right ventricular strain was negatively correlated with VAT, but not with body weight or BMI.

“These findings suggest that weight loss, particularly reduction in visceral adiposity, benefits [right ventricular] structure and function in a manner akin to that observed in the [left ventricle],” the researchers noted.

Some surprises and limitations

Dr. Borlaug said he found some, but not all, of the results surprising. “Earlier studies had shown evidence for benefit from weight loss on cardiac structure and function, but had been limited by smaller sample sizes, shorter durations of evaluation, and variable methods used,” he said in an interview.

The findings that strain imaging showed both left and right ventricular function improved while EF declined “shows some of the problems with using EF, as it is affected by chamber size and geometry. We have previously shown that patients with HFpEF display an increase in fat around the heart, and this affects cardiac function and interaction between the left and right sides of the heart, so we expected to see that this fat depot would be reduced, and this was indeed the case,” Dr. Borlaug added.

In the current study, “visceral fat was most strongly tied to the heart remodeling in obesity, and changes in visceral fat were most strongly tied to improvements in cardiac structure following weight loss,” Dr. Borlaug told this news organization. “This further supports this concept that excess visceral fat plays a key role in HFpEF, especially in the abdomen and around the heart,” he said.

However, “The biggest surprise was the discordant effects in the left atrium,” Dr. Borlaug said. “Left atrial remodeling and dysfunction play a crucial role in HFpEF as well, and we expected that this would improve following weight loss, but in fact we observed that left atrial function deteriorated, and other indicators of atrial myopathy worsened, including higher estimates of left atrial pressures and increased prevalence of atrial fibrillation,” he said.

This difference emphasizes that weight loss may not address all abnormalities that lead to HFpEF, although a key limitation of the current study was the lack of a control group of patients with the same degree of obesity and no weight-loss intervention, and the deterioration in left atrial function might have been even greater in the absence of weight loss, Dr. Borlaug added.
 

Larger numbers support effects

Previous research shows that structural heart changes associated with obesity can be reversed through weight loss, but the current study fills a gap by providing long-term data in a larger sample than previously studied, wrote Paul Heidenreich, MD, of Stanford (Calif.) University in an accompanying editorial).

“There has been uncertainty regarding the prolonged effect of weight loss on cardiac function; this study was larger than many prior studies and provided a longer follow-up,” Dr. Heidenreich said in an interview.

“One unusual finding was that, while weight loss led to left ventricle reverse remodeling (reduction in wall thickness), the same effect was not seen for the left atrium; the left atrial size continued to increase,” he said. “I would have expected the left atrial changes to mirror the changes in the left ventricle,” he noted.

The findings support the greater cardiac risk of visceral vs. subcutaneous adipose tissue, and although body mass index will retain prognostic value, measures of central obesity are more likely predictors of cardiac structural changes and events and should be reported in clinical studies, Dr. Heidenreich wrote.

However, “We need a better understanding of the factors that influence left atrial remodeling and reverse remodeling,” Dr. Heidenreich told this news organization. “While left ventricular compliance and pressure play a role, there are other factors that need to be elucidated,” he said.

 

Studies in progress may inform practice

The current data call for further study to test novel treatments to facilitate weight loss in patients with HFpEF and those at risk for HFpEF, and some of these studies with medicines are underway, Dr. Borlaug said in the interview.

“Until such studies are completed, we will not truly understand the effects of weight loss on the heart, but the present data certainly provide strong support that patients who have obesity and HFpEF or are at risk for HFpEF should try to lose weight through lifestyle interventions,” he said. 

Whether the cardiac changes seen in the current study would be different with nonsurgical weight loss remains a key question because many obese patients are reluctant to undergo bariatric surgery, Dr. Borlaug said. “We cannot assess whether the effects would differ with nonsurgical weight loss, and this requires further study,” he added.

As for additional research, “Randomized, controlled trials of weight-loss interventions, with appropriate controls and comprehensive assessments of cardiac structure, function, and hemodynamics will be most informative,” said Dr. Borlaug. “Larger trials powered to evaluate cardiovascular outcomes such as heart failure hospitalization or cardiovascular death also are critically important to better understand the role of weight loss to treat and prevent HFpEF, the ultimate form of obesity-related heart disease,” he emphasized.

The study was supported in part by grants to lead author Dr. Hidemi Sorimachi of the Mayo Clinic from the Uehara Memorial Foundation, Japan, and to corresponding author Dr. Borlaug from the National Institutes of Health. Dr. Borlaug also disclosed previous grants from National Institutes of Health/National Heart, Lung, and Blood Institute, AstraZeneca, Corvia, Medtronic, GlaxoSmithKline, Mesoblast, Novartis, and Tenax Therapeutics; and consulting fees from Actelion, Amgen, Aria, Axon Therapies, Boehringer Ingelheim, Edwards Lifesciences, Eli Lilly, Imbria, Janssen, Merck, Novo Nordisk, and VADovations. Dr. Heidenreich had no financial disclosures.

Cardiovascular disease (CVD) and mortality risk could be detected by routine retinal scanning, according to a new study using data from the UK Biobank Eye and Vision Consortium and the European Prospective Investigation into Cancer (EPIC)–Norfolk study.

The researchers, from St. George’s University of London, Cambridge University, Kingston University, Moorfields Eye Hospital, and University College London, developed a method of artificial intelligence (AI)–enabled imaging of the retina’s vascular network that could accurately predict CVD and death, without the need for blood tests or blood pressure measurement.

The system “paves the way for a highly effective, noninvasive screening test for people at medium to high risk of circulatory disease that doesn’t have to be done in a clinic,” they said. “In the general population it could be used as a noncontact form of systemic vascular health check, to triage those at medium-high risk of circulatory mortality for further clinical risk assessment and appropriate intervention.” Optometry specialists welcomed the prospect and hailed it as “an exciting development.”
 

Retinal vessels give an accurate early indicator of CVD

The study, published online in the British Journal of Ophthalmology, was based on previous research showing that the width of retinal arterioles and venules seen on retinal imaging may provide an accurate early indicator of CVD, whereas current risk prediction frameworks aren’t always reliable in identifying people who will go on to develop or die of circulatory diseases. 

The researchers developed a fully automated AI-enabled algorithm, called Quantitative Analysis of Retinal vessels Topology and Size (QUARTZ), to assess the potential of retinal vasculature imaging plus known risk factors to predict vascular health and death. They applied QUARTZ to retinal images from 88,052 UK Biobank participants aged 40-69 years, looking specifically at the width, vessel area, and degree of tortuosity of the retinal microvasculature, to develop prediction models for stroke, heart attack, and death from circulatory disease.

They then applied these models to the retinal images of 7,411 participants, aged 48-92 years, in the EPIC-Norfolk study. They then compared the performance of QUARTZ with the widely used Framingham Risk Scores framework.

The participants in the two studies were tracked for an average of 7.7 and 9.1 years, respectively, during which time there were 327 circulatory disease deaths among 64,144 UK Biobank participants (average age, 56.8 years) and 201 circulatory deaths among 5,862 EPIC-Norfolk participants (average age, 67.6 years).
 

Vessel characteristics important predictors of CVD mortality

Results from the QUARTZ models showed that in all participants, arteriolar and venular width, venular tortuosity, and width variation were important predictors of circulatory disease death. In addition, in women, but not in men, arteriolar and venular area were separate factors that contributed to risk prediction.

Overall, the predictive models, based on age, smoking, and medical history (antihypertensive or cholesterol lowering medication, diabetes, and history of stroke or MI) as well as retinal vasculature, captured between half and two-thirds of circulatory disease deaths in those most at risk, the authors said. 

Compared with Framingham Risk Scores (FRS), the retinal vasculature (RV) models captured about 5% more cases of stroke in UK Biobank men, 8% more cases in UK Biobank women, and 3% more cases among EPIC-Norfolk men most at risk, but nearly 2% fewer cases among EPIC-Norfolk women. However, the team said that, while adding RV to FRS resulted in only marginal changes in prediction of stroke or MI, a simpler noninvasive risk score based on age, sex, smoking status, medical history, and RV “yielded comparable performance to FRS, without the need for blood sampling or BP measurement.”
 

Vasculometry low cost, noninvasive and with high street availability

They concluded: “Retinal imaging is established within clinic and hospital eye care and in optometric practices in the U.S. and U.K. AI-enabled vasculometry risk prediction is fully automated, low cost, noninvasive and has the potential for reaching a higher proportion of the population in the community because of “high street” availability and because blood sampling or sphygmomanometry are not needed.

“[Retinal vasculature] is a microvascular marker, hence offers better prediction for circulatory mortality and stroke, compared with MI, which is more macrovascular, except perhaps in women. 

“In the general population it could be used as a noncontact form of systemic vascular health check, to triage those at medium-high risk of circulatory mortality for further clinical risk assessment and appropriate intervention.”

In the United Kingdom, for example, it could be included in the primary care NHS Health Check for those aged 41-74 years, they suggested.  In addition, “high street” retinal scanning could directly feed into primary medical services and help achieve greater screening coverage for older age groups, who are likely to attend an optometric practice for visual correction, especially with the onset of presbyopia. “This would offer a novel approach to identify those at high risk of circulatory mortality, which is not currently screened for,” the team said.
 

Test could help to identify high-risk individuals

In a linked editorial, Ify Mordi, MD, and Emanuele Trucco, MD, of the University of Dundee (Scotland), said that CVD remains a significant cause of mortality and morbidity and the most common cause of death worldwide, accounting for a quarter of all U.K. deaths – and its burden is increasing. “Identification of individuals at high risk is particularly important,” they said, but current clinical risk scores to identify those at risk “are unfortunately not perfect,” so miss some of those who might benefit from preventative therapy.

“The retina is the only location that allows non-invasive direct visualisation of the vasculature, potentially providing a rich source of information.” In the new study, the measurements derived with the software tool, QUARTZ, were significantly associated with CVD, they said, with similar predictive performance to the Framingham clinical risk score.

“The results strengthen the evidence from several similar studies that the retina can be a useful and potentially disruptive source of information for CVD risk in personalised medicine.” However, a number of questions remain about how this knowledge could be integrated into clinical care, including who would conduct such a retinal screening program and who would act on the findings?

The editorial concluded: “What is now needed is for ophthalmologists, cardiologists, primary care physicians, and computer scientists to work together to design studies to determine whether using this information improves clinical outcome, and, if so, to work with regulatory bodies, scientific societies and healthcare systems to optimize clinical work flows and enable practical implementation in routine practice.”
 

‘Exciting development that could improve outcomes’

Asked to comment, Farah Topia, clinical and regulatory adviser at the Association of Optometrists, said: “This is an exciting development that could improve outcomes for many patients by enabling earlier detection of serious health risks. Patients attend optometric practice for a variety of reasons and this interaction could be used to a greater extent to help detect disease earlier. With optometrists available on every High Street, in the heart of communities, it’s an element of primary care that can be accessed quickly and easily, and optometrists are also already trained to have health and lifestyle discussion with patients.”

She added: “Retinal photographs are regularly taken when patients visit an optometrist, so being able to further enhance this process using AI is exciting.

“We look forward to seeing how this area develops and how optometrists can work together with other healthcare sectors to improve patient outcomes and ease the burden the NHS currently faces.” 

The study was funded by the Medical Research Council Population and Systems Medicine Board and the British Heart Foundation.

A version of this article first appeared on Medscape UK.

Cardiovascular disease (CVD) and mortality risk could be detected by routine retinal scanning, according to a new study using data from the UK Biobank Eye and Vision Consortium and the European Prospective Investigation into Cancer (EPIC)–Norfolk study.

The researchers, from St. George’s University of London, Cambridge University, Kingston University, Moorfields Eye Hospital, and University College London, developed a method of artificial intelligence (AI)–enabled imaging of the retina’s vascular network that could accurately predict CVD and death, without the need for blood tests or blood pressure measurement.

The system “paves the way for a highly effective, noninvasive screening test for people at medium to high risk of circulatory disease that doesn’t have to be done in a clinic,” they said. “In the general population it could be used as a noncontact form of systemic vascular health check, to triage those at medium-high risk of circulatory mortality for further clinical risk assessment and appropriate intervention.” Optometry specialists welcomed the prospect and hailed it as “an exciting development.”
 

Retinal vessels give an accurate early indicator of CVD

The study, published online in the British Journal of Ophthalmology, was based on previous research showing that the width of retinal arterioles and venules seen on retinal imaging may provide an accurate early indicator of CVD, whereas current risk prediction frameworks aren’t always reliable in identifying people who will go on to develop or die of circulatory diseases. 

The researchers developed a fully automated AI-enabled algorithm, called Quantitative Analysis of Retinal vessels Topology and Size (QUARTZ), to assess the potential of retinal vasculature imaging plus known risk factors to predict vascular health and death. They applied QUARTZ to retinal images from 88,052 UK Biobank participants aged 40-69 years, looking specifically at the width, vessel area, and degree of tortuosity of the retinal microvasculature, to develop prediction models for stroke, heart attack, and death from circulatory disease.

They then applied these models to the retinal images of 7,411 participants, aged 48-92 years, in the EPIC-Norfolk study. They then compared the performance of QUARTZ with the widely used Framingham Risk Scores framework.

The participants in the two studies were tracked for an average of 7.7 and 9.1 years, respectively, during which time there were 327 circulatory disease deaths among 64,144 UK Biobank participants (average age, 56.8 years) and 201 circulatory deaths among 5,862 EPIC-Norfolk participants (average age, 67.6 years).
 

Vessel characteristics important predictors of CVD mortality

Results from the QUARTZ models showed that in all participants, arteriolar and venular width, venular tortuosity, and width variation were important predictors of circulatory disease death. In addition, in women, but not in men, arteriolar and venular area were separate factors that contributed to risk prediction.

Overall, the predictive models, based on age, smoking, and medical history (antihypertensive or cholesterol lowering medication, diabetes, and history of stroke or MI) as well as retinal vasculature, captured between half and two-thirds of circulatory disease deaths in those most at risk, the authors said. 

Compared with Framingham Risk Scores (FRS), the retinal vasculature (RV) models captured about 5% more cases of stroke in UK Biobank men, 8% more cases in UK Biobank women, and 3% more cases among EPIC-Norfolk men most at risk, but nearly 2% fewer cases among EPIC-Norfolk women. However, the team said that, while adding RV to FRS resulted in only marginal changes in prediction of stroke or MI, a simpler noninvasive risk score based on age, sex, smoking status, medical history, and RV “yielded comparable performance to FRS, without the need for blood sampling or BP measurement.”
 

Vasculometry low cost, noninvasive and with high street availability

They concluded: “Retinal imaging is established within clinic and hospital eye care and in optometric practices in the U.S. and U.K. AI-enabled vasculometry risk prediction is fully automated, low cost, noninvasive and has the potential for reaching a higher proportion of the population in the community because of “high street” availability and because blood sampling or sphygmomanometry are not needed.

“[Retinal vasculature] is a microvascular marker, hence offers better prediction for circulatory mortality and stroke, compared with MI, which is more macrovascular, except perhaps in women. 

“In the general population it could be used as a noncontact form of systemic vascular health check, to triage those at medium-high risk of circulatory mortality for further clinical risk assessment and appropriate intervention.”

In the United Kingdom, for example, it could be included in the primary care NHS Health Check for those aged 41-74 years, they suggested.  In addition, “high street” retinal scanning could directly feed into primary medical services and help achieve greater screening coverage for older age groups, who are likely to attend an optometric practice for visual correction, especially with the onset of presbyopia. “This would offer a novel approach to identify those at high risk of circulatory mortality, which is not currently screened for,” the team said.
 

Test could help to identify high-risk individuals

In a linked editorial, Ify Mordi, MD, and Emanuele Trucco, MD, of the University of Dundee (Scotland), said that CVD remains a significant cause of mortality and morbidity and the most common cause of death worldwide, accounting for a quarter of all U.K. deaths – and its burden is increasing. “Identification of individuals at high risk is particularly important,” they said, but current clinical risk scores to identify those at risk “are unfortunately not perfect,” so miss some of those who might benefit from preventative therapy.

“The retina is the only location that allows non-invasive direct visualisation of the vasculature, potentially providing a rich source of information.” In the new study, the measurements derived with the software tool, QUARTZ, were significantly associated with CVD, they said, with similar predictive performance to the Framingham clinical risk score.

“The results strengthen the evidence from several similar studies that the retina can be a useful and potentially disruptive source of information for CVD risk in personalised medicine.” However, a number of questions remain about how this knowledge could be integrated into clinical care, including who would conduct such a retinal screening program and who would act on the findings?

The editorial concluded: “What is now needed is for ophthalmologists, cardiologists, primary care physicians, and computer scientists to work together to design studies to determine whether using this information improves clinical outcome, and, if so, to work with regulatory bodies, scientific societies and healthcare systems to optimize clinical work flows and enable practical implementation in routine practice.”
 

‘Exciting development that could improve outcomes’

Asked to comment, Farah Topia, clinical and regulatory adviser at the Association of Optometrists, said: “This is an exciting development that could improve outcomes for many patients by enabling earlier detection of serious health risks. Patients attend optometric practice for a variety of reasons and this interaction could be used to a greater extent to help detect disease earlier. With optometrists available on every High Street, in the heart of communities, it’s an element of primary care that can be accessed quickly and easily, and optometrists are also already trained to have health and lifestyle discussion with patients.”

She added: “Retinal photographs are regularly taken when patients visit an optometrist, so being able to further enhance this process using AI is exciting.

“We look forward to seeing how this area develops and how optometrists can work together with other healthcare sectors to improve patient outcomes and ease the burden the NHS currently faces.” 

The study was funded by the Medical Research Council Population and Systems Medicine Board and the British Heart Foundation.

A version of this article first appeared on Medscape UK.

Cardiovascular disease (CVD) and mortality risk could be detected by routine retinal scanning, according to a new study using data from the UK Biobank Eye and Vision Consortium and the European Prospective Investigation into Cancer (EPIC)–Norfolk study.

The researchers, from St. George’s University of London, Cambridge University, Kingston University, Moorfields Eye Hospital, and University College London, developed a method of artificial intelligence (AI)–enabled imaging of the retina’s vascular network that could accurately predict CVD and death, without the need for blood tests or blood pressure measurement.

The system “paves the way for a highly effective, noninvasive screening test for people at medium to high risk of circulatory disease that doesn’t have to be done in a clinic,” they said. “In the general population it could be used as a noncontact form of systemic vascular health check, to triage those at medium-high risk of circulatory mortality for further clinical risk assessment and appropriate intervention.” Optometry specialists welcomed the prospect and hailed it as “an exciting development.”
 

Retinal vessels give an accurate early indicator of CVD

The study, published online in the British Journal of Ophthalmology, was based on previous research showing that the width of retinal arterioles and venules seen on retinal imaging may provide an accurate early indicator of CVD, whereas current risk prediction frameworks aren’t always reliable in identifying people who will go on to develop or die of circulatory diseases. 

The researchers developed a fully automated AI-enabled algorithm, called Quantitative Analysis of Retinal vessels Topology and Size (QUARTZ), to assess the potential of retinal vasculature imaging plus known risk factors to predict vascular health and death. They applied QUARTZ to retinal images from 88,052 UK Biobank participants aged 40-69 years, looking specifically at the width, vessel area, and degree of tortuosity of the retinal microvasculature, to develop prediction models for stroke, heart attack, and death from circulatory disease.

They then applied these models to the retinal images of 7,411 participants, aged 48-92 years, in the EPIC-Norfolk study. They then compared the performance of QUARTZ with the widely used Framingham Risk Scores framework.

The participants in the two studies were tracked for an average of 7.7 and 9.1 years, respectively, during which time there were 327 circulatory disease deaths among 64,144 UK Biobank participants (average age, 56.8 years) and 201 circulatory deaths among 5,862 EPIC-Norfolk participants (average age, 67.6 years).
 

Vessel characteristics important predictors of CVD mortality

Results from the QUARTZ models showed that in all participants, arteriolar and venular width, venular tortuosity, and width variation were important predictors of circulatory disease death. In addition, in women, but not in men, arteriolar and venular area were separate factors that contributed to risk prediction.

Overall, the predictive models, based on age, smoking, and medical history (antihypertensive or cholesterol lowering medication, diabetes, and history of stroke or MI) as well as retinal vasculature, captured between half and two-thirds of circulatory disease deaths in those most at risk, the authors said. 

Compared with Framingham Risk Scores (FRS), the retinal vasculature (RV) models captured about 5% more cases of stroke in UK Biobank men, 8% more cases in UK Biobank women, and 3% more cases among EPIC-Norfolk men most at risk, but nearly 2% fewer cases among EPIC-Norfolk women. However, the team said that, while adding RV to FRS resulted in only marginal changes in prediction of stroke or MI, a simpler noninvasive risk score based on age, sex, smoking status, medical history, and RV “yielded comparable performance to FRS, without the need for blood sampling or BP measurement.”
 

Vasculometry low cost, noninvasive and with high street availability

They concluded: “Retinal imaging is established within clinic and hospital eye care and in optometric practices in the U.S. and U.K. AI-enabled vasculometry risk prediction is fully automated, low cost, noninvasive and has the potential for reaching a higher proportion of the population in the community because of “high street” availability and because blood sampling or sphygmomanometry are not needed.

“[Retinal vasculature] is a microvascular marker, hence offers better prediction for circulatory mortality and stroke, compared with MI, which is more macrovascular, except perhaps in women. 

“In the general population it could be used as a noncontact form of systemic vascular health check, to triage those at medium-high risk of circulatory mortality for further clinical risk assessment and appropriate intervention.”

In the United Kingdom, for example, it could be included in the primary care NHS Health Check for those aged 41-74 years, they suggested.  In addition, “high street” retinal scanning could directly feed into primary medical services and help achieve greater screening coverage for older age groups, who are likely to attend an optometric practice for visual correction, especially with the onset of presbyopia. “This would offer a novel approach to identify those at high risk of circulatory mortality, which is not currently screened for,” the team said.
 

Test could help to identify high-risk individuals

In a linked editorial, Ify Mordi, MD, and Emanuele Trucco, MD, of the University of Dundee (Scotland), said that CVD remains a significant cause of mortality and morbidity and the most common cause of death worldwide, accounting for a quarter of all U.K. deaths – and its burden is increasing. “Identification of individuals at high risk is particularly important,” they said, but current clinical risk scores to identify those at risk “are unfortunately not perfect,” so miss some of those who might benefit from preventative therapy.

“The retina is the only location that allows non-invasive direct visualisation of the vasculature, potentially providing a rich source of information.” In the new study, the measurements derived with the software tool, QUARTZ, were significantly associated with CVD, they said, with similar predictive performance to the Framingham clinical risk score.

“The results strengthen the evidence from several similar studies that the retina can be a useful and potentially disruptive source of information for CVD risk in personalised medicine.” However, a number of questions remain about how this knowledge could be integrated into clinical care, including who would conduct such a retinal screening program and who would act on the findings?

The editorial concluded: “What is now needed is for ophthalmologists, cardiologists, primary care physicians, and computer scientists to work together to design studies to determine whether using this information improves clinical outcome, and, if so, to work with regulatory bodies, scientific societies and healthcare systems to optimize clinical work flows and enable practical implementation in routine practice.”
 

‘Exciting development that could improve outcomes’

Asked to comment, Farah Topia, clinical and regulatory adviser at the Association of Optometrists, said: “This is an exciting development that could improve outcomes for many patients by enabling earlier detection of serious health risks. Patients attend optometric practice for a variety of reasons and this interaction could be used to a greater extent to help detect disease earlier. With optometrists available on every High Street, in the heart of communities, it’s an element of primary care that can be accessed quickly and easily, and optometrists are also already trained to have health and lifestyle discussion with patients.”

She added: “Retinal photographs are regularly taken when patients visit an optometrist, so being able to further enhance this process using AI is exciting.

“We look forward to seeing how this area develops and how optometrists can work together with other healthcare sectors to improve patient outcomes and ease the burden the NHS currently faces.” 

The study was funded by the Medical Research Council Population and Systems Medicine Board and the British Heart Foundation.

A version of this article first appeared on Medscape UK.

A growing number of Americans with cardiovascular disease (CVD) have limited or uncertain access to food, results of a new study suggest.

An analysis of data from the National Health and Nutrition Examination Survey (NHANES) representing more than 300 million American adults found that, overall, 38.1% of people with cardiovascular disease were food insecure in 2017-2019.

©Amanda Grandfield/iStockphoto.com

Uphill battle

Johanna Contreras, MD, advanced heart failure and transplant cardiologist at the Mount Sinai Hospital, New York, treats food insecure cardiovascular patients in her practice and tries to educate them about good nutrition. But it is an uphill battle.

“A lot of my patients live in the South Bronx. They have hypertension, hypercholesterolemia, and there are no grocery stores where they can buy fresh vegetables. I talk to them about eating healthy. They tell me it’s impossible. The stores only have pre-packaged foods. So even in the South Bronx, even though it is in New York, it is very hard to get fresh food. And when it is available, it is very expensive,” Dr. Contreras told this news organization.

“Fresh pineapples can cost $8. A fast-food burger costs $3. So that is what they buy: It’s what they can afford. Even the store managers don’t want to stock fresh produce because it can spoil. They open stores, like Whole Foods, but in the more affluent neighborhoods. They should open one in poor neighborhoods,” she said.

Dr. Contreras says she spends much of her time educating her patients about good nutrition. She asks them to keep a food diary and analyzes the results at each visit.

“I look at what they eat, and I try to see how I can use this information in a good way. I advise them to use frozen foods, and avoid canned, because it is a lot healthier. I am pragmatic, because I know that if I tell my patients to eat salmon, for example, they aren’t going to be able to afford it, if they can even access it.”

She also informs them about relatively healthy fast-food choices.

“I tell them to order 100% fruit juice, water, or milk when they go to McDonalds or other fast-food places. So I think this study is very important. Food insecurity is a very important component of cardiovascular disease, and unfortunately, minority communities are where this occurs.”

Dr. Brandt and Dr. Contreras report no relevant financial relationships.

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

A growing number of Americans with cardiovascular disease (CVD) have limited or uncertain access to food, results of a new study suggest.

An analysis of data from the National Health and Nutrition Examination Survey (NHANES) representing more than 300 million American adults found that, overall, 38.1% of people with cardiovascular disease were food insecure in 2017-2019.

©Amanda Grandfield/iStockphoto.com

Uphill battle

Johanna Contreras, MD, advanced heart failure and transplant cardiologist at the Mount Sinai Hospital, New York, treats food insecure cardiovascular patients in her practice and tries to educate them about good nutrition. But it is an uphill battle.

“A lot of my patients live in the South Bronx. They have hypertension, hypercholesterolemia, and there are no grocery stores where they can buy fresh vegetables. I talk to them about eating healthy. They tell me it’s impossible. The stores only have pre-packaged foods. So even in the South Bronx, even though it is in New York, it is very hard to get fresh food. And when it is available, it is very expensive,” Dr. Contreras told this news organization.

“Fresh pineapples can cost $8. A fast-food burger costs $3. So that is what they buy: It’s what they can afford. Even the store managers don’t want to stock fresh produce because it can spoil. They open stores, like Whole Foods, but in the more affluent neighborhoods. They should open one in poor neighborhoods,” she said.

Dr. Contreras says she spends much of her time educating her patients about good nutrition. She asks them to keep a food diary and analyzes the results at each visit.

“I look at what they eat, and I try to see how I can use this information in a good way. I advise them to use frozen foods, and avoid canned, because it is a lot healthier. I am pragmatic, because I know that if I tell my patients to eat salmon, for example, they aren’t going to be able to afford it, if they can even access it.”

She also informs them about relatively healthy fast-food choices.

“I tell them to order 100% fruit juice, water, or milk when they go to McDonalds or other fast-food places. So I think this study is very important. Food insecurity is a very important component of cardiovascular disease, and unfortunately, minority communities are where this occurs.”

Dr. Brandt and Dr. Contreras report no relevant financial relationships.

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

A growing number of Americans with cardiovascular disease (CVD) have limited or uncertain access to food, results of a new study suggest.

An analysis of data from the National Health and Nutrition Examination Survey (NHANES) representing more than 300 million American adults found that, overall, 38.1% of people with cardiovascular disease were food insecure in 2017-2019.

©Amanda Grandfield/iStockphoto.com

Uphill battle

Johanna Contreras, MD, advanced heart failure and transplant cardiologist at the Mount Sinai Hospital, New York, treats food insecure cardiovascular patients in her practice and tries to educate them about good nutrition. But it is an uphill battle.

“A lot of my patients live in the South Bronx. They have hypertension, hypercholesterolemia, and there are no grocery stores where they can buy fresh vegetables. I talk to them about eating healthy. They tell me it’s impossible. The stores only have pre-packaged foods. So even in the South Bronx, even though it is in New York, it is very hard to get fresh food. And when it is available, it is very expensive,” Dr. Contreras told this news organization.

“Fresh pineapples can cost $8. A fast-food burger costs $3. So that is what they buy: It’s what they can afford. Even the store managers don’t want to stock fresh produce because it can spoil. They open stores, like Whole Foods, but in the more affluent neighborhoods. They should open one in poor neighborhoods,” she said.

Dr. Contreras says she spends much of her time educating her patients about good nutrition. She asks them to keep a food diary and analyzes the results at each visit.

“I look at what they eat, and I try to see how I can use this information in a good way. I advise them to use frozen foods, and avoid canned, because it is a lot healthier. I am pragmatic, because I know that if I tell my patients to eat salmon, for example, they aren’t going to be able to afford it, if they can even access it.”

She also informs them about relatively healthy fast-food choices.

“I tell them to order 100% fruit juice, water, or milk when they go to McDonalds or other fast-food places. So I think this study is very important. Food insecurity is a very important component of cardiovascular disease, and unfortunately, minority communities are where this occurs.”

Dr. Brandt and Dr. Contreras report no relevant financial relationships.

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

Shortening the duration of dual-antiplatelet therapy (DAPT) and continuing with a P2Y12 inhibitor alone after percutaneous coronary intervention (PCI) was associated with a similar rate of ischemic events but with less bleeding than prolonged DAPT after 3 years of follow-up in the SMART-CHOICE trial.

“The current results of extended follow-up from the SMART-CHOICE trial support evidence of an aspirin dropping strategy with indefinite use of P2Y12 inhibitor after minimum use of DAPT in patients who underwent PCI,” the investigators, with lead author Ki Hong Choi, MD, division of cardiology, department of medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea, conclude.

The 3-year results from the study were published online in JAMA Cardiology.

The authors explain that although dual therapy with aspirin and a P2Y12 inhibitor after PCI with a drug-eluting stent (DES) is crucial to reduce the risk of ischemic events, it raises concerns about increased risk of bleeding, and the antiplatelet strategy after PCI is currently shifting to reduce the duration of DAPT.

Several recent randomized studies have consistently shown that a short duration of DAPT (1-3 months) followed by P2Y12 inhibitor monotherapy had ischemia protection effects comparable with that of DAPT of longer duration, and it was associated with a significantly reduced risk of bleeding events in patients who underwent PCI, they note. However, these studies have so far reported only 1-year outcomes, and long-term results are not yet available.

The SMART-CHOICE trial compared two antiplatelet strategies – 3 months of DAPT followed by long-term P2Y12 inhibitor monotherapy (mainly with clopidogrel) or prolonged DAPT for 12 months or longer – in 2,993 patients who had undergone PCI with a drug-eluting stent. Results at 12 months showed a similar rate of ischemic events with both strategies but a lower rate of bleeding in the group that received shortened DAPT.

The SMART-CHOICE investigators now report the 3-year results showing similar outcomes.

At 3 years, the primary endpoint, a composite of all-cause death, myocardial infarction, or stroke, had occurred in 6.3% of the shortened DAPT group and 6.1% in the prolonged DAPT group, giving a hazard ratio of 1.06 (95% confidence interval, 0.79-1.44).

But in the shortened DAPT group, the risk of bleeding was reduced. Bleeding Academic Research Consortium (BARC) types 2-5 bleeding had occurred in 3.2% of the shortened DAPT group and in 8.2% of the prolonged DAPT group (hazard ratio, 0.39; 95% CI, 0.28-0.55). Major bleeding, BARC types 3-5, occurred in 1.2% of the shortened DAPT group and in 2.4% of the prolonged DAPT group (HR, 0.56; 95% CI 0.31-0.99).

The landmark analyses between 3 months and 3 years and per-protocol analyses showed consistent results.

The researchers point out that this is the first trial to report on the long-term safety and efficacy of P2Y12-inhibitor monotherapy as long-term maintenance therapy for stable patients treated with PCI.

“Especially considering that extended DAPT significantly reduced the risks of ischemic events compared with aspirin monotherapy in a couple of trials, comparison between P2Y12-inhibitor monotherapy and prolonged DAPT for recurrent ischemic events over a longer period beyond 1 year is of great importance,” they say.

They cite two other trials – HOST-EXAM and GLOBAL LEADERS – which have shown P2Y12-inhibitor monotherapy to be superior to aspirin monotherapy in preventing both ischemic and bleeding events during the long-term maintenance period after PCI.

“Combining the results of the current study, HOST-EXAM trial, and landmark analysis of the GLOBAL LEADERS trial, long-term P2Y12-inhibitor monotherapy after a minimum period of DAPT might be the most reliable option from among aspirin monotherapy, P2Y12 monotherapy, and extended DAPT for maintenance therapy after stabilizing patients who have undergone PCI with a current-generation DES,” they conclude.

They note that the American College of Cardiology/American Heart Association/Society for Cardiovascular Angiography and Interventions guidelines for coronary artery revascularization newly recommends a shorter course of DAPT followed by P2Y12 monotherapy as a class IIa indication. The recommendation is based on results of five large, randomized clinical trials, including SMART-CHOICE, TWILIGHT, STOPDAPT-2, TICO, and GLOBAL LEADERS.

“The current results of extended follow-up from the SMART-CHOICE trial support evidence of aspirin-dropping strategy with indefinite use of P2Y12 inhibitor after minimum use of DAPT in patients who underwent PCI,” they say.

They point out that two further trials, A-CLOSE in high-risk patients and SMART-CHOICE III, will be helpful to confirm these findings.
 

P2Y12-inhibitor monotherapy ‘attractive concept’

In an accompanying editor’s note, Ajay Kirtane, MD, Columbia University Irving Medical Center/New York–Presbyterian Hospital, New York, and Roxana Mehran, MD, Icahn School of Medicine at Mount Sinai and the Cardiovascular Research Foundation, New York, note that current guidelines recommend 3-6 months of DAPT following PCI with current-generation drug-eluting stents in stable patients and 6-12 months or longer for those with acute coronary syndromes. For patients at higher risk of bleeding, even shorter DAPT durations can be considered on a case-by-case basis.

Historically, the component of DAPT subject to discontinuation decisions was the P2Y12 inhibitor (clopidogrel, prasugrel, or ticagrelor), but more recent trials have further explored whether discontinuation of the aspirin component of DAPT can mitigate bleeding while preserving anti-ischemic efficacy.

The editorialists explain that the concept of P2Y1-inhibitor monotherapy is attractive because it may optimize antiplatelet effects through a single agent that can avoid the gastrointestinal toxicity of aspirin as well as the increased bleeding that comes with combing multiple antithrombotic agents.

They suggest that the long-term results from the SMART-CHOICE trial “should lead clinicians to consider a strategy of monotherapy after a short period of DAPT as a viable one to mitigate bleeding risk,” although they also point out that SMART-CHOICE was underpowered to rigorously assess ischemic differences, so caution is warranted.

“For patients at greatest risk for recurrent ischemic events, the role of continued DAPT is always an option, but these data (and other consistent trials) give clinicians more options to pursue individualized treatment decisions,” they write.

“To some, the continually moving field of post-PCI antiplatelet therapy has provided too many choices, which can at times be dizzying. To us, every patient is different, and thoughtful evidence-based consideration is increasingly possible for many of our treatment decisions,” they conclude.

The SMART-CHOICE study was supported by unrestricted grants from the Korean Society of Interventional Cardiology, Abbott Vascular, Biotronik, and Boston Scientific.

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

Shortening the duration of dual-antiplatelet therapy (DAPT) and continuing with a P2Y12 inhibitor alone after percutaneous coronary intervention (PCI) was associated with a similar rate of ischemic events but with less bleeding than prolonged DAPT after 3 years of follow-up in the SMART-CHOICE trial.

“The current results of extended follow-up from the SMART-CHOICE trial support evidence of an aspirin dropping strategy with indefinite use of P2Y12 inhibitor after minimum use of DAPT in patients who underwent PCI,” the investigators, with lead author Ki Hong Choi, MD, division of cardiology, department of medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea, conclude.

The 3-year results from the study were published online in JAMA Cardiology.

The authors explain that although dual therapy with aspirin and a P2Y12 inhibitor after PCI with a drug-eluting stent (DES) is crucial to reduce the risk of ischemic events, it raises concerns about increased risk of bleeding, and the antiplatelet strategy after PCI is currently shifting to reduce the duration of DAPT.

Several recent randomized studies have consistently shown that a short duration of DAPT (1-3 months) followed by P2Y12 inhibitor monotherapy had ischemia protection effects comparable with that of DAPT of longer duration, and it was associated with a significantly reduced risk of bleeding events in patients who underwent PCI, they note. However, these studies have so far reported only 1-year outcomes, and long-term results are not yet available.

The SMART-CHOICE trial compared two antiplatelet strategies – 3 months of DAPT followed by long-term P2Y12 inhibitor monotherapy (mainly with clopidogrel) or prolonged DAPT for 12 months or longer – in 2,993 patients who had undergone PCI with a drug-eluting stent. Results at 12 months showed a similar rate of ischemic events with both strategies but a lower rate of bleeding in the group that received shortened DAPT.

The SMART-CHOICE investigators now report the 3-year results showing similar outcomes.

At 3 years, the primary endpoint, a composite of all-cause death, myocardial infarction, or stroke, had occurred in 6.3% of the shortened DAPT group and 6.1% in the prolonged DAPT group, giving a hazard ratio of 1.06 (95% confidence interval, 0.79-1.44).

But in the shortened DAPT group, the risk of bleeding was reduced. Bleeding Academic Research Consortium (BARC) types 2-5 bleeding had occurred in 3.2% of the shortened DAPT group and in 8.2% of the prolonged DAPT group (hazard ratio, 0.39; 95% CI, 0.28-0.55). Major bleeding, BARC types 3-5, occurred in 1.2% of the shortened DAPT group and in 2.4% of the prolonged DAPT group (HR, 0.56; 95% CI 0.31-0.99).

The landmark analyses between 3 months and 3 years and per-protocol analyses showed consistent results.

The researchers point out that this is the first trial to report on the long-term safety and efficacy of P2Y12-inhibitor monotherapy as long-term maintenance therapy for stable patients treated with PCI.

“Especially considering that extended DAPT significantly reduced the risks of ischemic events compared with aspirin monotherapy in a couple of trials, comparison between P2Y12-inhibitor monotherapy and prolonged DAPT for recurrent ischemic events over a longer period beyond 1 year is of great importance,” they say.

They cite two other trials – HOST-EXAM and GLOBAL LEADERS – which have shown P2Y12-inhibitor monotherapy to be superior to aspirin monotherapy in preventing both ischemic and bleeding events during the long-term maintenance period after PCI.

“Combining the results of the current study, HOST-EXAM trial, and landmark analysis of the GLOBAL LEADERS trial, long-term P2Y12-inhibitor monotherapy after a minimum period of DAPT might be the most reliable option from among aspirin monotherapy, P2Y12 monotherapy, and extended DAPT for maintenance therapy after stabilizing patients who have undergone PCI with a current-generation DES,” they conclude.

They note that the American College of Cardiology/American Heart Association/Society for Cardiovascular Angiography and Interventions guidelines for coronary artery revascularization newly recommends a shorter course of DAPT followed by P2Y12 monotherapy as a class IIa indication. The recommendation is based on results of five large, randomized clinical trials, including SMART-CHOICE, TWILIGHT, STOPDAPT-2, TICO, and GLOBAL LEADERS.

“The current results of extended follow-up from the SMART-CHOICE trial support evidence of aspirin-dropping strategy with indefinite use of P2Y12 inhibitor after minimum use of DAPT in patients who underwent PCI,” they say.

They point out that two further trials, A-CLOSE in high-risk patients and SMART-CHOICE III, will be helpful to confirm these findings.
 

P2Y12-inhibitor monotherapy ‘attractive concept’

In an accompanying editor’s note, Ajay Kirtane, MD, Columbia University Irving Medical Center/New York–Presbyterian Hospital, New York, and Roxana Mehran, MD, Icahn School of Medicine at Mount Sinai and the Cardiovascular Research Foundation, New York, note that current guidelines recommend 3-6 months of DAPT following PCI with current-generation drug-eluting stents in stable patients and 6-12 months or longer for those with acute coronary syndromes. For patients at higher risk of bleeding, even shorter DAPT durations can be considered on a case-by-case basis.

Historically, the component of DAPT subject to discontinuation decisions was the P2Y12 inhibitor (clopidogrel, prasugrel, or ticagrelor), but more recent trials have further explored whether discontinuation of the aspirin component of DAPT can mitigate bleeding while preserving anti-ischemic efficacy.

The editorialists explain that the concept of P2Y1-inhibitor monotherapy is attractive because it may optimize antiplatelet effects through a single agent that can avoid the gastrointestinal toxicity of aspirin as well as the increased bleeding that comes with combing multiple antithrombotic agents.

They suggest that the long-term results from the SMART-CHOICE trial “should lead clinicians to consider a strategy of monotherapy after a short period of DAPT as a viable one to mitigate bleeding risk,” although they also point out that SMART-CHOICE was underpowered to rigorously assess ischemic differences, so caution is warranted.

“For patients at greatest risk for recurrent ischemic events, the role of continued DAPT is always an option, but these data (and other consistent trials) give clinicians more options to pursue individualized treatment decisions,” they write.

“To some, the continually moving field of post-PCI antiplatelet therapy has provided too many choices, which can at times be dizzying. To us, every patient is different, and thoughtful evidence-based consideration is increasingly possible for many of our treatment decisions,” they conclude.

The SMART-CHOICE study was supported by unrestricted grants from the Korean Society of Interventional Cardiology, Abbott Vascular, Biotronik, and Boston Scientific.

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

Shortening the duration of dual-antiplatelet therapy (DAPT) and continuing with a P2Y12 inhibitor alone after percutaneous coronary intervention (PCI) was associated with a similar rate of ischemic events but with less bleeding than prolonged DAPT after 3 years of follow-up in the SMART-CHOICE trial.

“The current results of extended follow-up from the SMART-CHOICE trial support evidence of an aspirin dropping strategy with indefinite use of P2Y12 inhibitor after minimum use of DAPT in patients who underwent PCI,” the investigators, with lead author Ki Hong Choi, MD, division of cardiology, department of medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea, conclude.

The 3-year results from the study were published online in JAMA Cardiology.

The authors explain that although dual therapy with aspirin and a P2Y12 inhibitor after PCI with a drug-eluting stent (DES) is crucial to reduce the risk of ischemic events, it raises concerns about increased risk of bleeding, and the antiplatelet strategy after PCI is currently shifting to reduce the duration of DAPT.

Several recent randomized studies have consistently shown that a short duration of DAPT (1-3 months) followed by P2Y12 inhibitor monotherapy had ischemia protection effects comparable with that of DAPT of longer duration, and it was associated with a significantly reduced risk of bleeding events in patients who underwent PCI, they note. However, these studies have so far reported only 1-year outcomes, and long-term results are not yet available.

The SMART-CHOICE trial compared two antiplatelet strategies – 3 months of DAPT followed by long-term P2Y12 inhibitor monotherapy (mainly with clopidogrel) or prolonged DAPT for 12 months or longer – in 2,993 patients who had undergone PCI with a drug-eluting stent. Results at 12 months showed a similar rate of ischemic events with both strategies but a lower rate of bleeding in the group that received shortened DAPT.

The SMART-CHOICE investigators now report the 3-year results showing similar outcomes.

At 3 years, the primary endpoint, a composite of all-cause death, myocardial infarction, or stroke, had occurred in 6.3% of the shortened DAPT group and 6.1% in the prolonged DAPT group, giving a hazard ratio of 1.06 (95% confidence interval, 0.79-1.44).

But in the shortened DAPT group, the risk of bleeding was reduced. Bleeding Academic Research Consortium (BARC) types 2-5 bleeding had occurred in 3.2% of the shortened DAPT group and in 8.2% of the prolonged DAPT group (hazard ratio, 0.39; 95% CI, 0.28-0.55). Major bleeding, BARC types 3-5, occurred in 1.2% of the shortened DAPT group and in 2.4% of the prolonged DAPT group (HR, 0.56; 95% CI 0.31-0.99).

The landmark analyses between 3 months and 3 years and per-protocol analyses showed consistent results.

The researchers point out that this is the first trial to report on the long-term safety and efficacy of P2Y12-inhibitor monotherapy as long-term maintenance therapy for stable patients treated with PCI.

“Especially considering that extended DAPT significantly reduced the risks of ischemic events compared with aspirin monotherapy in a couple of trials, comparison between P2Y12-inhibitor monotherapy and prolonged DAPT for recurrent ischemic events over a longer period beyond 1 year is of great importance,” they say.

They cite two other trials – HOST-EXAM and GLOBAL LEADERS – which have shown P2Y12-inhibitor monotherapy to be superior to aspirin monotherapy in preventing both ischemic and bleeding events during the long-term maintenance period after PCI.

“Combining the results of the current study, HOST-EXAM trial, and landmark analysis of the GLOBAL LEADERS trial, long-term P2Y12-inhibitor monotherapy after a minimum period of DAPT might be the most reliable option from among aspirin monotherapy, P2Y12 monotherapy, and extended DAPT for maintenance therapy after stabilizing patients who have undergone PCI with a current-generation DES,” they conclude.

They note that the American College of Cardiology/American Heart Association/Society for Cardiovascular Angiography and Interventions guidelines for coronary artery revascularization newly recommends a shorter course of DAPT followed by P2Y12 monotherapy as a class IIa indication. The recommendation is based on results of five large, randomized clinical trials, including SMART-CHOICE, TWILIGHT, STOPDAPT-2, TICO, and GLOBAL LEADERS.

“The current results of extended follow-up from the SMART-CHOICE trial support evidence of aspirin-dropping strategy with indefinite use of P2Y12 inhibitor after minimum use of DAPT in patients who underwent PCI,” they say.

They point out that two further trials, A-CLOSE in high-risk patients and SMART-CHOICE III, will be helpful to confirm these findings.
 

P2Y12-inhibitor monotherapy ‘attractive concept’

In an accompanying editor’s note, Ajay Kirtane, MD, Columbia University Irving Medical Center/New York–Presbyterian Hospital, New York, and Roxana Mehran, MD, Icahn School of Medicine at Mount Sinai and the Cardiovascular Research Foundation, New York, note that current guidelines recommend 3-6 months of DAPT following PCI with current-generation drug-eluting stents in stable patients and 6-12 months or longer for those with acute coronary syndromes. For patients at higher risk of bleeding, even shorter DAPT durations can be considered on a case-by-case basis.

Historically, the component of DAPT subject to discontinuation decisions was the P2Y12 inhibitor (clopidogrel, prasugrel, or ticagrelor), but more recent trials have further explored whether discontinuation of the aspirin component of DAPT can mitigate bleeding while preserving anti-ischemic efficacy.

The editorialists explain that the concept of P2Y1-inhibitor monotherapy is attractive because it may optimize antiplatelet effects through a single agent that can avoid the gastrointestinal toxicity of aspirin as well as the increased bleeding that comes with combing multiple antithrombotic agents.

They suggest that the long-term results from the SMART-CHOICE trial “should lead clinicians to consider a strategy of monotherapy after a short period of DAPT as a viable one to mitigate bleeding risk,” although they also point out that SMART-CHOICE was underpowered to rigorously assess ischemic differences, so caution is warranted.

“For patients at greatest risk for recurrent ischemic events, the role of continued DAPT is always an option, but these data (and other consistent trials) give clinicians more options to pursue individualized treatment decisions,” they write.

“To some, the continually moving field of post-PCI antiplatelet therapy has provided too many choices, which can at times be dizzying. To us, every patient is different, and thoughtful evidence-based consideration is increasingly possible for many of our treatment decisions,” they conclude.

The SMART-CHOICE study was supported by unrestricted grants from the Korean Society of Interventional Cardiology, Abbott Vascular, Biotronik, and Boston Scientific.

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

Aspirin may be of specific benefit for the primary prevention of cardiovascular disease in individuals with raised Lp(a) levels, a new study has suggested.

The study analyzed data from the ASPREE (ASPirin in Reducing Events in the Elderly) trial, which randomized 19,000 individuals aged 70 years or older without a history of cardiovascular disease to aspirin (100 mg/day) or placebo. While the main results, reported previously, showed no net benefit of aspirin in the overall population, the current analysis suggests there may be a benefit in individuals with raised Lp(a) levels.

jimdeli/Fotolia

Similar findings in the Women’s Health Study

Dr. Lacaze and colleagues point out that similar results have also been seen in another large aspirin primary prevention study – the Women’s Health Study (WHS).

The WHS compared aspirin 100 mg every other day with placebo in initially healthy younger women. Previously reported results showed that women carrying the rs3798220-C variant, associated with highly elevated Lp(a) levels, had a twofold higher risk of cardiovascular events than noncarrier women in the placebo group, but this risk was reduced in the aspirin group. And there was no increased risk of bleeding in women with elevated Lp(a).

“These results, in the absence of any other randomized controlled trial evidence or approved therapy for treating Lp(a)-associated risk, have been used by some physicians as justification for prescribing aspirin in patients with elevated Lp(a),” Dr. Lacaze and colleagues note.

“In the present study of the ASPREE trial population, our results were consistent with the WHS analysis, despite randomizing older individuals (both men and women),” they add.

They say this validation of the WHS result provides evidence that a very high-risk subgroup of individuals with highly elevated Lp(a) – those carrying the rs3798220-C allele – may benefit from low-dose aspirin for the primary prevention of cardiovascular events. Further, the benefits in this subgroup specifically may outweigh any bleeding risk.

But they point out that rs3798220-C carriers comprise only a small portion of all individuals with elevated Lp(a) in the general population, while the polygenic LPA-GRS explains about 60% of the variation in directly measured plasma Lp(a) levels and has the potential advantage of being able to identify a larger group of individuals at increased risk.

The researchers note, however, that it is not clear to what extent the LPA-GRS results add further evidence to suggest that individuals with elevated Lp(a), beyond rs3798220-C carriers, may be more likely to benefit from aspirin.

“If the benefit of aspirin extends beyond very high-risk rs3798220-C carriers alone, to the broader 20%-30% of individuals with elevated Lp(a), the potential utility of aspirin for the primary prevention of cardiovascular events would increase substantially,” they say.
 

‘Very high clinical relevance’

In an accompanying editorial, Ana Devesa, MD, Borja Ibanez, MD, PhD, and Valentin Fuster, MD, PhD, The National Center for Cardiovascular Research, Madrid, say that: “[Dr.] Lacaze et al. are to be congratulated for a study of very high clinical relevance that represents a first indication for primary prevention for patients at high cardiovascular risk.”

They explain that the pathogenic mechanism of Lp(a) is believed to be a combination of prothrombotic and proatherogenic effects, and the current findings support the hypothesis that the prothrombotic mechanism of Lp(a) is mediated by platelet aggregation. 

This would explain the occurrence of thrombotic events in the presence of atherosclerosis in that elevated Lp(a) levels may induce platelet adhesion and aggregation to the activated atherosclerotic plaque, thus enhancing the atherothrombotic process. Moreover, activated platelets release several mediators that result in cell adhesion and attraction of chemokines and proinflammatory cytokines, driving an inflammatory response and mediating atherosclerosis progression, they add.

The editorialists highlight the limitations of the study already acknowledged by the authors: The analysis used genotypes rather than elevated Lp(a) levels and included only those of European ancestry, meaning the results are difficult to extrapolate to other populations.

“The next steps in clinical practice should be defined, and there are still questions to be answered,” they conclude. “Will every patient benefit from antithrombotic therapies? Should all patients who have elevated Lp(a) levels be treated with aspirin?”

The ASPREE Biobank is supported by grants from the Commonwealth Scientific and Industrial Research Organisation, Monash University, Menzies Research Institute, Australian National University, University of Melbourne, National Institutes of Health, National Health and Medical Research Council of Australia, and the Victorian Cancer Agency. Dr. Lacaze is supported by a National Heart Foundation Future Leader Fellowship.

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

Aspirin may be of specific benefit for the primary prevention of cardiovascular disease in individuals with raised Lp(a) levels, a new study has suggested.

The study analyzed data from the ASPREE (ASPirin in Reducing Events in the Elderly) trial, which randomized 19,000 individuals aged 70 years or older without a history of cardiovascular disease to aspirin (100 mg/day) or placebo. While the main results, reported previously, showed no net benefit of aspirin in the overall population, the current analysis suggests there may be a benefit in individuals with raised Lp(a) levels.

jimdeli/Fotolia

Similar findings in the Women’s Health Study

Dr. Lacaze and colleagues point out that similar results have also been seen in another large aspirin primary prevention study – the Women’s Health Study (WHS).

The WHS compared aspirin 100 mg every other day with placebo in initially healthy younger women. Previously reported results showed that women carrying the rs3798220-C variant, associated with highly elevated Lp(a) levels, had a twofold higher risk of cardiovascular events than noncarrier women in the placebo group, but this risk was reduced in the aspirin group. And there was no increased risk of bleeding in women with elevated Lp(a).

“These results, in the absence of any other randomized controlled trial evidence or approved therapy for treating Lp(a)-associated risk, have been used by some physicians as justification for prescribing aspirin in patients with elevated Lp(a),” Dr. Lacaze and colleagues note.

“In the present study of the ASPREE trial population, our results were consistent with the WHS analysis, despite randomizing older individuals (both men and women),” they add.

They say this validation of the WHS result provides evidence that a very high-risk subgroup of individuals with highly elevated Lp(a) – those carrying the rs3798220-C allele – may benefit from low-dose aspirin for the primary prevention of cardiovascular events. Further, the benefits in this subgroup specifically may outweigh any bleeding risk.

But they point out that rs3798220-C carriers comprise only a small portion of all individuals with elevated Lp(a) in the general population, while the polygenic LPA-GRS explains about 60% of the variation in directly measured plasma Lp(a) levels and has the potential advantage of being able to identify a larger group of individuals at increased risk.

The researchers note, however, that it is not clear to what extent the LPA-GRS results add further evidence to suggest that individuals with elevated Lp(a), beyond rs3798220-C carriers, may be more likely to benefit from aspirin.

“If the benefit of aspirin extends beyond very high-risk rs3798220-C carriers alone, to the broader 20%-30% of individuals with elevated Lp(a), the potential utility of aspirin for the primary prevention of cardiovascular events would increase substantially,” they say.
 

‘Very high clinical relevance’

In an accompanying editorial, Ana Devesa, MD, Borja Ibanez, MD, PhD, and Valentin Fuster, MD, PhD, The National Center for Cardiovascular Research, Madrid, say that: “[Dr.] Lacaze et al. are to be congratulated for a study of very high clinical relevance that represents a first indication for primary prevention for patients at high cardiovascular risk.”

They explain that the pathogenic mechanism of Lp(a) is believed to be a combination of prothrombotic and proatherogenic effects, and the current findings support the hypothesis that the prothrombotic mechanism of Lp(a) is mediated by platelet aggregation. 

This would explain the occurrence of thrombotic events in the presence of atherosclerosis in that elevated Lp(a) levels may induce platelet adhesion and aggregation to the activated atherosclerotic plaque, thus enhancing the atherothrombotic process. Moreover, activated platelets release several mediators that result in cell adhesion and attraction of chemokines and proinflammatory cytokines, driving an inflammatory response and mediating atherosclerosis progression, they add.

The editorialists highlight the limitations of the study already acknowledged by the authors: The analysis used genotypes rather than elevated Lp(a) levels and included only those of European ancestry, meaning the results are difficult to extrapolate to other populations.

“The next steps in clinical practice should be defined, and there are still questions to be answered,” they conclude. “Will every patient benefit from antithrombotic therapies? Should all patients who have elevated Lp(a) levels be treated with aspirin?”

The ASPREE Biobank is supported by grants from the Commonwealth Scientific and Industrial Research Organisation, Monash University, Menzies Research Institute, Australian National University, University of Melbourne, National Institutes of Health, National Health and Medical Research Council of Australia, and the Victorian Cancer Agency. Dr. Lacaze is supported by a National Heart Foundation Future Leader Fellowship.

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

Aspirin may be of specific benefit for the primary prevention of cardiovascular disease in individuals with raised Lp(a) levels, a new study has suggested.

The study analyzed data from the ASPREE (ASPirin in Reducing Events in the Elderly) trial, which randomized 19,000 individuals aged 70 years or older without a history of cardiovascular disease to aspirin (100 mg/day) or placebo. While the main results, reported previously, showed no net benefit of aspirin in the overall population, the current analysis suggests there may be a benefit in individuals with raised Lp(a) levels.

jimdeli/Fotolia

Similar findings in the Women’s Health Study

Dr. Lacaze and colleagues point out that similar results have also been seen in another large aspirin primary prevention study – the Women’s Health Study (WHS).

The WHS compared aspirin 100 mg every other day with placebo in initially healthy younger women. Previously reported results showed that women carrying the rs3798220-C variant, associated with highly elevated Lp(a) levels, had a twofold higher risk of cardiovascular events than noncarrier women in the placebo group, but this risk was reduced in the aspirin group. And there was no increased risk of bleeding in women with elevated Lp(a).

“These results, in the absence of any other randomized controlled trial evidence or approved therapy for treating Lp(a)-associated risk, have been used by some physicians as justification for prescribing aspirin in patients with elevated Lp(a),” Dr. Lacaze and colleagues note.

“In the present study of the ASPREE trial population, our results were consistent with the WHS analysis, despite randomizing older individuals (both men and women),” they add.

They say this validation of the WHS result provides evidence that a very high-risk subgroup of individuals with highly elevated Lp(a) – those carrying the rs3798220-C allele – may benefit from low-dose aspirin for the primary prevention of cardiovascular events. Further, the benefits in this subgroup specifically may outweigh any bleeding risk.

But they point out that rs3798220-C carriers comprise only a small portion of all individuals with elevated Lp(a) in the general population, while the polygenic LPA-GRS explains about 60% of the variation in directly measured plasma Lp(a) levels and has the potential advantage of being able to identify a larger group of individuals at increased risk.

The researchers note, however, that it is not clear to what extent the LPA-GRS results add further evidence to suggest that individuals with elevated Lp(a), beyond rs3798220-C carriers, may be more likely to benefit from aspirin.

“If the benefit of aspirin extends beyond very high-risk rs3798220-C carriers alone, to the broader 20%-30% of individuals with elevated Lp(a), the potential utility of aspirin for the primary prevention of cardiovascular events would increase substantially,” they say.
 

‘Very high clinical relevance’

In an accompanying editorial, Ana Devesa, MD, Borja Ibanez, MD, PhD, and Valentin Fuster, MD, PhD, The National Center for Cardiovascular Research, Madrid, say that: “[Dr.] Lacaze et al. are to be congratulated for a study of very high clinical relevance that represents a first indication for primary prevention for patients at high cardiovascular risk.”

They explain that the pathogenic mechanism of Lp(a) is believed to be a combination of prothrombotic and proatherogenic effects, and the current findings support the hypothesis that the prothrombotic mechanism of Lp(a) is mediated by platelet aggregation. 

This would explain the occurrence of thrombotic events in the presence of atherosclerosis in that elevated Lp(a) levels may induce platelet adhesion and aggregation to the activated atherosclerotic plaque, thus enhancing the atherothrombotic process. Moreover, activated platelets release several mediators that result in cell adhesion and attraction of chemokines and proinflammatory cytokines, driving an inflammatory response and mediating atherosclerosis progression, they add.

The editorialists highlight the limitations of the study already acknowledged by the authors: The analysis used genotypes rather than elevated Lp(a) levels and included only those of European ancestry, meaning the results are difficult to extrapolate to other populations.

“The next steps in clinical practice should be defined, and there are still questions to be answered,” they conclude. “Will every patient benefit from antithrombotic therapies? Should all patients who have elevated Lp(a) levels be treated with aspirin?”

The ASPREE Biobank is supported by grants from the Commonwealth Scientific and Industrial Research Organisation, Monash University, Menzies Research Institute, Australian National University, University of Melbourne, National Institutes of Health, National Health and Medical Research Council of Australia, and the Victorian Cancer Agency. Dr. Lacaze is supported by a National Heart Foundation Future Leader Fellowship.

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