MDedge Emergency Medicine

The antiviral drug Paxlovid appears to reduce the risk of dying from COVID-19 by 79% and decrease hospitalizations by 73% in at-risk patients who are ages 65 and older, according to a new study published in The New England Journal of Medicine.

The pill, which is a combination of the drugs nirmatrelvir and ritonavir, received FDA emergency use authorization in December 2021 to treat mild to moderate disease in ages 12 and older who face high risks for having severe COVID-19, hospitalization, and death.

“The results of the study show unequivocally that treatment with Paxlovid significantly reduces the risk of hospitalization and death from COVID-19,” Doron Netzer, MD, the senior study author and a researcher with Clalit Health Services, Tel Aviv, told The Jerusalem Post.

“We are the country’s leader in the provision of giving Paxlovid to relevant patients,” he said. “It was given to patients all over the country, with medical teams monitoring the patients who took the pills.”

The research is considered one of the most thorough studies published to date about how well Paxlovid works, the news outlet reported. The research team analyzed information from Clalit’s electronic medical records. The health care organization covers about 52% of the Israeli population and almost two-thirds of older adults. More than 30,000 COVID-19 patients in Israel have been treated with the drug so far.

Dr. Netzer and colleagues looked at hospitalization and death data for at-risk COVID-19 patients ages 40 and older between Jan. 9 and March 31, when the original Omicron variant was the dominant strain in Israel. During that time, more than 1.1 million Clalit patients were infected with COVID-19, 109,000 patients were considered at-risk, and 3,900 patients received the drug.

The average age of the patients was 60, and 39% of the patients were 65 and older. Overall, 78% of the patients had previous COVID-19 immunity due to vaccination, prior infection, or both.

Among ages 65 and older, the rate of COVID-19 hospitalization was 14.7 cases per 100,000 person-days among treated patients, compared with 58.9 cases per 100,000 person-days among untreated patients. This represented a 73% lower chance of being hospitalized.

Among ages 40-64, the rate of hospitalization due to COVID-19 was 15.2 cases per 100,000 person-days among treated patients, compared with 15.8 cases per 100,000 person-days among untreated patients. The risk of hospitalization wasn’t significantly lower for this age group.

Among ages 65 and older, there were two deaths from COVID-19 in 2,484 treated patients, compared with 158 in the 40,337 untreated patients. This represented a 79% lower chance of dying from COVID-19.

Among ages 40-64, there was one death from COVID-19 in 1,418 treated patients, compared with 16 in the 65,015 untreated patients. The risk of death wasn’t significantly lower for this age group.

For both age groups, a lack of previous COVID-19 immunity and a previous hospitalization were most strongly linked to high rates of hospitalization during the Omicron wave.

The researchers noted that they didn’t break down the data on ages 40-64 who had cancer and other severe conditions that weaken the immune system. These patients may be more likely to benefit from Paxlovid, they said, though future studies will need to analyze the data.

The study didn’t receive any financial or in-kind support, the authors said.

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

The antiviral drug Paxlovid appears to reduce the risk of dying from COVID-19 by 79% and decrease hospitalizations by 73% in at-risk patients who are ages 65 and older, according to a new study published in The New England Journal of Medicine.

The pill, which is a combination of the drugs nirmatrelvir and ritonavir, received FDA emergency use authorization in December 2021 to treat mild to moderate disease in ages 12 and older who face high risks for having severe COVID-19, hospitalization, and death.

“The results of the study show unequivocally that treatment with Paxlovid significantly reduces the risk of hospitalization and death from COVID-19,” Doron Netzer, MD, the senior study author and a researcher with Clalit Health Services, Tel Aviv, told The Jerusalem Post.

“We are the country’s leader in the provision of giving Paxlovid to relevant patients,” he said. “It was given to patients all over the country, with medical teams monitoring the patients who took the pills.”

The research is considered one of the most thorough studies published to date about how well Paxlovid works, the news outlet reported. The research team analyzed information from Clalit’s electronic medical records. The health care organization covers about 52% of the Israeli population and almost two-thirds of older adults. More than 30,000 COVID-19 patients in Israel have been treated with the drug so far.

Dr. Netzer and colleagues looked at hospitalization and death data for at-risk COVID-19 patients ages 40 and older between Jan. 9 and March 31, when the original Omicron variant was the dominant strain in Israel. During that time, more than 1.1 million Clalit patients were infected with COVID-19, 109,000 patients were considered at-risk, and 3,900 patients received the drug.

The average age of the patients was 60, and 39% of the patients were 65 and older. Overall, 78% of the patients had previous COVID-19 immunity due to vaccination, prior infection, or both.

Among ages 65 and older, the rate of COVID-19 hospitalization was 14.7 cases per 100,000 person-days among treated patients, compared with 58.9 cases per 100,000 person-days among untreated patients. This represented a 73% lower chance of being hospitalized.

Among ages 40-64, the rate of hospitalization due to COVID-19 was 15.2 cases per 100,000 person-days among treated patients, compared with 15.8 cases per 100,000 person-days among untreated patients. The risk of hospitalization wasn’t significantly lower for this age group.

Among ages 65 and older, there were two deaths from COVID-19 in 2,484 treated patients, compared with 158 in the 40,337 untreated patients. This represented a 79% lower chance of dying from COVID-19.

Among ages 40-64, there was one death from COVID-19 in 1,418 treated patients, compared with 16 in the 65,015 untreated patients. The risk of death wasn’t significantly lower for this age group.

For both age groups, a lack of previous COVID-19 immunity and a previous hospitalization were most strongly linked to high rates of hospitalization during the Omicron wave.

The researchers noted that they didn’t break down the data on ages 40-64 who had cancer and other severe conditions that weaken the immune system. These patients may be more likely to benefit from Paxlovid, they said, though future studies will need to analyze the data.

The study didn’t receive any financial or in-kind support, the authors said.

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

The antiviral drug Paxlovid appears to reduce the risk of dying from COVID-19 by 79% and decrease hospitalizations by 73% in at-risk patients who are ages 65 and older, according to a new study published in The New England Journal of Medicine.

The pill, which is a combination of the drugs nirmatrelvir and ritonavir, received FDA emergency use authorization in December 2021 to treat mild to moderate disease in ages 12 and older who face high risks for having severe COVID-19, hospitalization, and death.

“The results of the study show unequivocally that treatment with Paxlovid significantly reduces the risk of hospitalization and death from COVID-19,” Doron Netzer, MD, the senior study author and a researcher with Clalit Health Services, Tel Aviv, told The Jerusalem Post.

“We are the country’s leader in the provision of giving Paxlovid to relevant patients,” he said. “It was given to patients all over the country, with medical teams monitoring the patients who took the pills.”

The research is considered one of the most thorough studies published to date about how well Paxlovid works, the news outlet reported. The research team analyzed information from Clalit’s electronic medical records. The health care organization covers about 52% of the Israeli population and almost two-thirds of older adults. More than 30,000 COVID-19 patients in Israel have been treated with the drug so far.

Dr. Netzer and colleagues looked at hospitalization and death data for at-risk COVID-19 patients ages 40 and older between Jan. 9 and March 31, when the original Omicron variant was the dominant strain in Israel. During that time, more than 1.1 million Clalit patients were infected with COVID-19, 109,000 patients were considered at-risk, and 3,900 patients received the drug.

The average age of the patients was 60, and 39% of the patients were 65 and older. Overall, 78% of the patients had previous COVID-19 immunity due to vaccination, prior infection, or both.

Among ages 65 and older, the rate of COVID-19 hospitalization was 14.7 cases per 100,000 person-days among treated patients, compared with 58.9 cases per 100,000 person-days among untreated patients. This represented a 73% lower chance of being hospitalized.

Among ages 40-64, the rate of hospitalization due to COVID-19 was 15.2 cases per 100,000 person-days among treated patients, compared with 15.8 cases per 100,000 person-days among untreated patients. The risk of hospitalization wasn’t significantly lower for this age group.

Among ages 65 and older, there were two deaths from COVID-19 in 2,484 treated patients, compared with 158 in the 40,337 untreated patients. This represented a 79% lower chance of dying from COVID-19.

Among ages 40-64, there was one death from COVID-19 in 1,418 treated patients, compared with 16 in the 65,015 untreated patients. The risk of death wasn’t significantly lower for this age group.

For both age groups, a lack of previous COVID-19 immunity and a previous hospitalization were most strongly linked to high rates of hospitalization during the Omicron wave.

The researchers noted that they didn’t break down the data on ages 40-64 who had cancer and other severe conditions that weaken the immune system. These patients may be more likely to benefit from Paxlovid, they said, though future studies will need to analyze the data.

The study didn’t receive any financial or in-kind support, the authors said.

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

To address current gaps in expert guidance on newer nonstatin agents, the American College of Cardiology has issued an expert consensus decision pathway on the role of nonstatin therapies in LDL cholesterol lowering for risk reduction in atherosclerotic cardiovascular disease (ASCVD).

Since the publication of the most recent AHA/ACC cholesterol guidelines in 2018, a number of newer nonstatin medications have become available for management of lipid-associated risk, including bempedoic acid, inclisiran, evinacumab, and icosapent ethyl.

These medications were not addressed in the 2018 AHA/ACC Guideline on the Management of Blood Cholesterol.

The 53-page document – 2022 ACC Expert Consensus Decision Pathway on the Role of Nonstatin Therapies for LDL-Cholesterol Lowering in the Management of Atherosclerotic Cardiovascular Disease Risk – was published online in the Journal of the American College of Cardiology.

The new expert consensus document provides guidance for clinicians until the next formal guidelines are produced, Donald Lloyd-Jones, MD, chair of the writing committee, told this news organization.

• In what patient populations should newer nonstatin therapies be considered?
• In what situations should newer nonstatin therapies be considered?
• If newer nonstatin therapies are to be added, which therapies should be considered and in what order to maximize patient benefit and preference?

The document provides algorithms that endorse the four evidence-based patient groups identified in the 2018 guidelines and assumes that the patient is currently taking or has attempted to take a statin, given that that is the most effective initial therapy, the writing group says.

“The algorithms have been streamlined for ease of use by clinicians to help them identify who may need adjunctive nonstatin medications, to provide thresholds for consideration of those medications, and to provide a prioritization of those medications based on the strength of available evidence of efficacy,” said Dr. Lloyd-Jones, chair of the department of preventive medicine at Northwestern University’s Feinberg School of Medicine, Chicago.

“We hope that these pathways will assist the decision-making process for clinicians and patients,” he added.

He also noted that statins remain the “most important first-line therapy for reducing ASCVD risk, because of their efficacy, safety, and low cost. However, for some patients, there are now options if statins do not fully achieve the goals for reducing ASCVD risk or if statins are not tolerated at effective doses.”

“The new expert consensus document highlights that higher-risk patients should be considered more often for adjunctive therapy and provides user-friendly decision pathways to assist in considering the reasonable choices available under different clinical scenarios,” Dr. Lloyd-Jones said.

The document has been endorsed by the National Lipid Association.

This research had no commercial funding. Dr. Lloyd-Jones has disclosed no relevant financial relationships.

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

To address current gaps in expert guidance on newer nonstatin agents, the American College of Cardiology has issued an expert consensus decision pathway on the role of nonstatin therapies in LDL cholesterol lowering for risk reduction in atherosclerotic cardiovascular disease (ASCVD).

Since the publication of the most recent AHA/ACC cholesterol guidelines in 2018, a number of newer nonstatin medications have become available for management of lipid-associated risk, including bempedoic acid, inclisiran, evinacumab, and icosapent ethyl.

These medications were not addressed in the 2018 AHA/ACC Guideline on the Management of Blood Cholesterol.

The 53-page document – 2022 ACC Expert Consensus Decision Pathway on the Role of Nonstatin Therapies for LDL-Cholesterol Lowering in the Management of Atherosclerotic Cardiovascular Disease Risk – was published online in the Journal of the American College of Cardiology.

The new expert consensus document provides guidance for clinicians until the next formal guidelines are produced, Donald Lloyd-Jones, MD, chair of the writing committee, told this news organization.

• In what patient populations should newer nonstatin therapies be considered?
• In what situations should newer nonstatin therapies be considered?
• If newer nonstatin therapies are to be added, which therapies should be considered and in what order to maximize patient benefit and preference?

The document provides algorithms that endorse the four evidence-based patient groups identified in the 2018 guidelines and assumes that the patient is currently taking or has attempted to take a statin, given that that is the most effective initial therapy, the writing group says.

“The algorithms have been streamlined for ease of use by clinicians to help them identify who may need adjunctive nonstatin medications, to provide thresholds for consideration of those medications, and to provide a prioritization of those medications based on the strength of available evidence of efficacy,” said Dr. Lloyd-Jones, chair of the department of preventive medicine at Northwestern University’s Feinberg School of Medicine, Chicago.

“We hope that these pathways will assist the decision-making process for clinicians and patients,” he added.

He also noted that statins remain the “most important first-line therapy for reducing ASCVD risk, because of their efficacy, safety, and low cost. However, for some patients, there are now options if statins do not fully achieve the goals for reducing ASCVD risk or if statins are not tolerated at effective doses.”

“The new expert consensus document highlights that higher-risk patients should be considered more often for adjunctive therapy and provides user-friendly decision pathways to assist in considering the reasonable choices available under different clinical scenarios,” Dr. Lloyd-Jones said.

The document has been endorsed by the National Lipid Association.

This research had no commercial funding. Dr. Lloyd-Jones has disclosed no relevant financial relationships.

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

To address current gaps in expert guidance on newer nonstatin agents, the American College of Cardiology has issued an expert consensus decision pathway on the role of nonstatin therapies in LDL cholesterol lowering for risk reduction in atherosclerotic cardiovascular disease (ASCVD).

Since the publication of the most recent AHA/ACC cholesterol guidelines in 2018, a number of newer nonstatin medications have become available for management of lipid-associated risk, including bempedoic acid, inclisiran, evinacumab, and icosapent ethyl.

These medications were not addressed in the 2018 AHA/ACC Guideline on the Management of Blood Cholesterol.

The 53-page document – 2022 ACC Expert Consensus Decision Pathway on the Role of Nonstatin Therapies for LDL-Cholesterol Lowering in the Management of Atherosclerotic Cardiovascular Disease Risk – was published online in the Journal of the American College of Cardiology.

The new expert consensus document provides guidance for clinicians until the next formal guidelines are produced, Donald Lloyd-Jones, MD, chair of the writing committee, told this news organization.

• In what patient populations should newer nonstatin therapies be considered?
• In what situations should newer nonstatin therapies be considered?
• If newer nonstatin therapies are to be added, which therapies should be considered and in what order to maximize patient benefit and preference?

The document provides algorithms that endorse the four evidence-based patient groups identified in the 2018 guidelines and assumes that the patient is currently taking or has attempted to take a statin, given that that is the most effective initial therapy, the writing group says.

“The algorithms have been streamlined for ease of use by clinicians to help them identify who may need adjunctive nonstatin medications, to provide thresholds for consideration of those medications, and to provide a prioritization of those medications based on the strength of available evidence of efficacy,” said Dr. Lloyd-Jones, chair of the department of preventive medicine at Northwestern University’s Feinberg School of Medicine, Chicago.

“We hope that these pathways will assist the decision-making process for clinicians and patients,” he added.

He also noted that statins remain the “most important first-line therapy for reducing ASCVD risk, because of their efficacy, safety, and low cost. However, for some patients, there are now options if statins do not fully achieve the goals for reducing ASCVD risk or if statins are not tolerated at effective doses.”

“The new expert consensus document highlights that higher-risk patients should be considered more often for adjunctive therapy and provides user-friendly decision pathways to assist in considering the reasonable choices available under different clinical scenarios,” Dr. Lloyd-Jones said.

The document has been endorsed by the National Lipid Association.

This research had no commercial funding. Dr. Lloyd-Jones has disclosed no relevant financial relationships.

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

Contrary to expectations, vitamin K antagonists (VKAs) reduced the risk for ischemic stroke and death, compared with the factor Xa inhibitor rivaroxaban, (Xarelto, Janssen) in patients with rheumatic heart disease and atrial fibrillation (AFib), in the INVICTUS trial.

Patients receiving a VKA, typically warfarin, had a 25% lower risk for the primary outcome – a composite of stroke, systemic embolism, myocardial infarction, or death from vascular or unknown causes outcome – than receiving rivaroxaban (hazard ratio, 1.25; 95% confidence interval, 1.10-1.41).

This difference was driven primarily by a significant reduction in the risk for death in the VKA group, and without a significant increase in major bleeding, reported Ganesan Karthikeyan, MD, from the All India Institute of Medical Sciences in New Delhi.

“VKA should remain the standard of care for patients with rheumatic heart disease and atrial fibrillation,” he concluded in a hotline session at the annual congress of the European Society of Cardiology.

The study, simultaneously published in the New England Journal of Medicine, is the first randomized controlled trial to assess anticoagulant therapy in patients with rheumatic heart disease and AFib.

“Who could have possibly guessed these results? Certainly not me,” said invited discussant Renato D. Lopes, MD, MHS, PhD, Duke Clinical Research Institute, Durham, N.C. “To me, this is one more classical example of why we need to do randomized trials, since they are the only reliable way to determine treatment effects and drive clinical practice.”

Evidence gap

Rheumatic heart disease affects over 40 million people, mainly living in low- and low- to middle-income countries. About 20% of symptomatic patients have AF and an elevated stroke risk, but previous AFib trials excluded these patients, Dr. Karthikeyan noted.

INVICTUS was led by the Population Health Research Institute in Hamilton, Ont., and enrolled 4,565 patients from 24 countries in Africa, Asia, and Latin America who had rheumatic heart disease, AFib or atrial flutter, and an increased stroke risk caused by any of the following: CHA2DS2VASc score of 2 or more, moderate to severe mitral stenosis (valve area ≤ 2.0 cm²), left atrial spontaneous echo contrast, or left atrial thrombus.

Participants were randomly assigned to receive rivaroxaban, 20 mg once daily (15 mg/d if creatinine clearance was 15-49 mL/min), or a VKA titrated to an international normalized ratio (INR) of 2.0-3.0.

Warfarin was used in 79%-85% of patients assigned to VKA, with the percentage varying between visits. The INR was in therapeutic range in 33.2% of patients at baseline, 65.1% at 3 years, and 64.1% at 4 years.

During an average follow-up of 3.1 years, the primary outcome occurred in 446 patients in the VKA group (6.49% per year) and 560 patients in the rivaroxaban group (8.21% per year). The restricted mean survival time for the primary outcome was 1,675 vs. 1,599 days, respectively (difference, –76 days; 95% CI, –121 to –31 days; P for superiority < .001).

The rate of stroke or systemic embolism was similar between the VKA and rivaroxaban groups (75 vs. 94 events), although ischemic strokes were significantly lower with VKA (48 vs. 74 events).
 

No easy explanation

Deaths were significantly lower with VKA than rivaroxaban, at 442 versus 552 (restricted mean survival time for death, 1,608 vs. 1,587 days; difference, −72 days; 95% CI, –117 to –28 days).

“This reduction is not easily explained,” Dr. Karthikeyan acknowledged. “We cannot explain this reduction by the reduction in stroke that we saw because the number of deaths that are prevented by VKA are far larger than the number of strokes that are prevented. Moreover, the number of deaths were mainly heart failure or sudden deaths.”

Numbers of patients with major bleeding were also similar in the VKA and rivaroxaban groups (56 vs. 40 patients; P = .18), although numbers with fatal bleeding were lower with rivaroxaban (15 vs. 4, respectively).

By design, there were more physician interactions for monthly monitoring of INR in the VKA group, “but we do not believe such a large reduction can be explained entirely by increased health care contact,” he said. Moreover, there was no significant between-group difference in heart failure medications or hospitalizations or the need for valve replacement.

Almost a quarter (23%) of patients in the rivaroxaban group permanently discontinued the study drug versus just 6% in the VKA group.

Importantly, the mortality benefit emerged much later than in other trials and coincided with the time when the INR became therapeutic at about 3 years, Dr. Karthikeyan said. But it is unknown whether this is because of the INR or an unrelated effect.
 

More physician contact

Following the presentation, session cochair C. Michael Gibson, MD, Baim Institute for Clinical Research, Harvard Medical School, Boston, questioned the 23% discontinuation rate for rivaroxaban. “Is this really a superiority of warfarin or is this superiority of having someone come in and see their physician for a lot of checks on their INR?”

In response, Dr. Karthikeyan said that permanent discontinuation rates were about 20%-25% in shorter-duration direct oral anticoagulant trials, such as RELY, ROCKET-AF, and ARISTOLE, and exceeded 30% in ENGAGE-AF with 2.8 years’ follow-up.

“So, this is not new,” he said, adding that 31.4% of rivaroxaban patients did so for valve replacement surgery and subsequently received nonstudy VKA.

Dr. Lopes said it is important to keep in mind that INVICTUS enrolled a “very different population” that was younger (mean age, 50.5 years), was much more often female (72.3%), and had fewer comorbidities than patients with AFib who did not have rheumatic heart disease in the pivotal trials.

“It will be interesting to see the treatment effect according to mitral stenosis severity, since we had about 30% with mild mitral stenosis and additionally 18% of patients without mitral stenosis,” he added.

Co–principal investigator Stuart J. Connolly, MD, from the Population Health Research Institute, said physician contacts may be a factor but that the mortality difference was clear, highly significant, and sufficiently powered.

“What’s amazing is that what we’re seeing here is something that hasn’t been previously described with VKA or warfarin, which is that it reduces mortality,” he said in an interview.

Rivaroxaban has never been shown to reduce mortality in any particular condition, and a meta-analysis of other novel oral anticoagulants shows only a small reduction in mortality, caused almost completely by less intracranial hemorrhage than warfarin, he added. “So, we don’t think this is a problem with rivaroxaban. In some ways, rivaroxaban is an innocent bystander to a trial of warfarin in patients with rheumatic heart disease and atrial fibrillation.”

Dr. Connolly said more work is needed to explain the findings and analyses are planned to see which patients are at highest risk for death as well as looking at the relationship between INR control and outcomes.

“We need to do more research on what it is about VKA that could explain this,” he said. “Is it affecting the myocardium in some way, is it preventing fibrosis, is there some off target effect, not on the anticoagulation system, that could explain this?”

Athena Poppas, MD, chief of cardiology at Brown University, Providence, R.I., and past president of the American College of Cardiology, said “INVICTUS is an incredibly important study that needed to be done.”

“The results – though disappointing and surprising in some ways – I don’t think we can explain them away and change what we are doing right now,” she said in an interview.

Although warfarin is a cheap drug, Dr. Poppas said, it would be tremendously helpful to have an alternative treatment for these patients. Mechanistic studies are needed to understand the observed mortality advantage and low bleeding rates but that trials of other novel anticoagulants are also needed.

“But I’m not sure that will happen,” she added. “It’s unlikely to be industry sponsored, so it would be a very expensive lift with a low likelihood of success.”

In an editorial accompanying the paper, Gregory Y.H. Lip, MD, University of Liverpool (England), pointed out that observational data show similar or even higher risks for major bleeding with rivaroxaban than with warfarin. “To improve outcomes in these patients, we therefore need to look beyond anticoagulation alone or beyond a type of anticoagulation drug per se. Indeed, a one-size-fits-all approach may not be appropriate.”

The study was funded by an unrestricted grant from Bayer. Dr. Karthikeyan and Dr. Poppas reported no relevant conflicts of interest.

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

Contrary to expectations, vitamin K antagonists (VKAs) reduced the risk for ischemic stroke and death, compared with the factor Xa inhibitor rivaroxaban, (Xarelto, Janssen) in patients with rheumatic heart disease and atrial fibrillation (AFib), in the INVICTUS trial.

Patients receiving a VKA, typically warfarin, had a 25% lower risk for the primary outcome – a composite of stroke, systemic embolism, myocardial infarction, or death from vascular or unknown causes outcome – than receiving rivaroxaban (hazard ratio, 1.25; 95% confidence interval, 1.10-1.41).

This difference was driven primarily by a significant reduction in the risk for death in the VKA group, and without a significant increase in major bleeding, reported Ganesan Karthikeyan, MD, from the All India Institute of Medical Sciences in New Delhi.

“VKA should remain the standard of care for patients with rheumatic heart disease and atrial fibrillation,” he concluded in a hotline session at the annual congress of the European Society of Cardiology.

The study, simultaneously published in the New England Journal of Medicine, is the first randomized controlled trial to assess anticoagulant therapy in patients with rheumatic heart disease and AFib.

“Who could have possibly guessed these results? Certainly not me,” said invited discussant Renato D. Lopes, MD, MHS, PhD, Duke Clinical Research Institute, Durham, N.C. “To me, this is one more classical example of why we need to do randomized trials, since they are the only reliable way to determine treatment effects and drive clinical practice.”

Evidence gap

Rheumatic heart disease affects over 40 million people, mainly living in low- and low- to middle-income countries. About 20% of symptomatic patients have AF and an elevated stroke risk, but previous AFib trials excluded these patients, Dr. Karthikeyan noted.

INVICTUS was led by the Population Health Research Institute in Hamilton, Ont., and enrolled 4,565 patients from 24 countries in Africa, Asia, and Latin America who had rheumatic heart disease, AFib or atrial flutter, and an increased stroke risk caused by any of the following: CHA2DS2VASc score of 2 or more, moderate to severe mitral stenosis (valve area ≤ 2.0 cm²), left atrial spontaneous echo contrast, or left atrial thrombus.

Participants were randomly assigned to receive rivaroxaban, 20 mg once daily (15 mg/d if creatinine clearance was 15-49 mL/min), or a VKA titrated to an international normalized ratio (INR) of 2.0-3.0.

Warfarin was used in 79%-85% of patients assigned to VKA, with the percentage varying between visits. The INR was in therapeutic range in 33.2% of patients at baseline, 65.1% at 3 years, and 64.1% at 4 years.

During an average follow-up of 3.1 years, the primary outcome occurred in 446 patients in the VKA group (6.49% per year) and 560 patients in the rivaroxaban group (8.21% per year). The restricted mean survival time for the primary outcome was 1,675 vs. 1,599 days, respectively (difference, –76 days; 95% CI, –121 to –31 days; P for superiority < .001).

The rate of stroke or systemic embolism was similar between the VKA and rivaroxaban groups (75 vs. 94 events), although ischemic strokes were significantly lower with VKA (48 vs. 74 events).
 

No easy explanation

Deaths were significantly lower with VKA than rivaroxaban, at 442 versus 552 (restricted mean survival time for death, 1,608 vs. 1,587 days; difference, −72 days; 95% CI, –117 to –28 days).

“This reduction is not easily explained,” Dr. Karthikeyan acknowledged. “We cannot explain this reduction by the reduction in stroke that we saw because the number of deaths that are prevented by VKA are far larger than the number of strokes that are prevented. Moreover, the number of deaths were mainly heart failure or sudden deaths.”

Numbers of patients with major bleeding were also similar in the VKA and rivaroxaban groups (56 vs. 40 patients; P = .18), although numbers with fatal bleeding were lower with rivaroxaban (15 vs. 4, respectively).

By design, there were more physician interactions for monthly monitoring of INR in the VKA group, “but we do not believe such a large reduction can be explained entirely by increased health care contact,” he said. Moreover, there was no significant between-group difference in heart failure medications or hospitalizations or the need for valve replacement.

Almost a quarter (23%) of patients in the rivaroxaban group permanently discontinued the study drug versus just 6% in the VKA group.

Importantly, the mortality benefit emerged much later than in other trials and coincided with the time when the INR became therapeutic at about 3 years, Dr. Karthikeyan said. But it is unknown whether this is because of the INR or an unrelated effect.
 

More physician contact

Following the presentation, session cochair C. Michael Gibson, MD, Baim Institute for Clinical Research, Harvard Medical School, Boston, questioned the 23% discontinuation rate for rivaroxaban. “Is this really a superiority of warfarin or is this superiority of having someone come in and see their physician for a lot of checks on their INR?”

In response, Dr. Karthikeyan said that permanent discontinuation rates were about 20%-25% in shorter-duration direct oral anticoagulant trials, such as RELY, ROCKET-AF, and ARISTOLE, and exceeded 30% in ENGAGE-AF with 2.8 years’ follow-up.

“So, this is not new,” he said, adding that 31.4% of rivaroxaban patients did so for valve replacement surgery and subsequently received nonstudy VKA.

Dr. Lopes said it is important to keep in mind that INVICTUS enrolled a “very different population” that was younger (mean age, 50.5 years), was much more often female (72.3%), and had fewer comorbidities than patients with AFib who did not have rheumatic heart disease in the pivotal trials.

“It will be interesting to see the treatment effect according to mitral stenosis severity, since we had about 30% with mild mitral stenosis and additionally 18% of patients without mitral stenosis,” he added.

Co–principal investigator Stuart J. Connolly, MD, from the Population Health Research Institute, said physician contacts may be a factor but that the mortality difference was clear, highly significant, and sufficiently powered.

“What’s amazing is that what we’re seeing here is something that hasn’t been previously described with VKA or warfarin, which is that it reduces mortality,” he said in an interview.

Rivaroxaban has never been shown to reduce mortality in any particular condition, and a meta-analysis of other novel oral anticoagulants shows only a small reduction in mortality, caused almost completely by less intracranial hemorrhage than warfarin, he added. “So, we don’t think this is a problem with rivaroxaban. In some ways, rivaroxaban is an innocent bystander to a trial of warfarin in patients with rheumatic heart disease and atrial fibrillation.”

Dr. Connolly said more work is needed to explain the findings and analyses are planned to see which patients are at highest risk for death as well as looking at the relationship between INR control and outcomes.

“We need to do more research on what it is about VKA that could explain this,” he said. “Is it affecting the myocardium in some way, is it preventing fibrosis, is there some off target effect, not on the anticoagulation system, that could explain this?”

Athena Poppas, MD, chief of cardiology at Brown University, Providence, R.I., and past president of the American College of Cardiology, said “INVICTUS is an incredibly important study that needed to be done.”

“The results – though disappointing and surprising in some ways – I don’t think we can explain them away and change what we are doing right now,” she said in an interview.

Although warfarin is a cheap drug, Dr. Poppas said, it would be tremendously helpful to have an alternative treatment for these patients. Mechanistic studies are needed to understand the observed mortality advantage and low bleeding rates but that trials of other novel anticoagulants are also needed.

“But I’m not sure that will happen,” she added. “It’s unlikely to be industry sponsored, so it would be a very expensive lift with a low likelihood of success.”

In an editorial accompanying the paper, Gregory Y.H. Lip, MD, University of Liverpool (England), pointed out that observational data show similar or even higher risks for major bleeding with rivaroxaban than with warfarin. “To improve outcomes in these patients, we therefore need to look beyond anticoagulation alone or beyond a type of anticoagulation drug per se. Indeed, a one-size-fits-all approach may not be appropriate.”

The study was funded by an unrestricted grant from Bayer. Dr. Karthikeyan and Dr. Poppas reported no relevant conflicts of interest.

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

Contrary to expectations, vitamin K antagonists (VKAs) reduced the risk for ischemic stroke and death, compared with the factor Xa inhibitor rivaroxaban, (Xarelto, Janssen) in patients with rheumatic heart disease and atrial fibrillation (AFib), in the INVICTUS trial.

Patients receiving a VKA, typically warfarin, had a 25% lower risk for the primary outcome – a composite of stroke, systemic embolism, myocardial infarction, or death from vascular or unknown causes outcome – than receiving rivaroxaban (hazard ratio, 1.25; 95% confidence interval, 1.10-1.41).

This difference was driven primarily by a significant reduction in the risk for death in the VKA group, and without a significant increase in major bleeding, reported Ganesan Karthikeyan, MD, from the All India Institute of Medical Sciences in New Delhi.

“VKA should remain the standard of care for patients with rheumatic heart disease and atrial fibrillation,” he concluded in a hotline session at the annual congress of the European Society of Cardiology.

The study, simultaneously published in the New England Journal of Medicine, is the first randomized controlled trial to assess anticoagulant therapy in patients with rheumatic heart disease and AFib.

“Who could have possibly guessed these results? Certainly not me,” said invited discussant Renato D. Lopes, MD, MHS, PhD, Duke Clinical Research Institute, Durham, N.C. “To me, this is one more classical example of why we need to do randomized trials, since they are the only reliable way to determine treatment effects and drive clinical practice.”

Evidence gap

Rheumatic heart disease affects over 40 million people, mainly living in low- and low- to middle-income countries. About 20% of symptomatic patients have AF and an elevated stroke risk, but previous AFib trials excluded these patients, Dr. Karthikeyan noted.

INVICTUS was led by the Population Health Research Institute in Hamilton, Ont., and enrolled 4,565 patients from 24 countries in Africa, Asia, and Latin America who had rheumatic heart disease, AFib or atrial flutter, and an increased stroke risk caused by any of the following: CHA2DS2VASc score of 2 or more, moderate to severe mitral stenosis (valve area ≤ 2.0 cm²), left atrial spontaneous echo contrast, or left atrial thrombus.

Participants were randomly assigned to receive rivaroxaban, 20 mg once daily (15 mg/d if creatinine clearance was 15-49 mL/min), or a VKA titrated to an international normalized ratio (INR) of 2.0-3.0.

Warfarin was used in 79%-85% of patients assigned to VKA, with the percentage varying between visits. The INR was in therapeutic range in 33.2% of patients at baseline, 65.1% at 3 years, and 64.1% at 4 years.

During an average follow-up of 3.1 years, the primary outcome occurred in 446 patients in the VKA group (6.49% per year) and 560 patients in the rivaroxaban group (8.21% per year). The restricted mean survival time for the primary outcome was 1,675 vs. 1,599 days, respectively (difference, –76 days; 95% CI, –121 to –31 days; P for superiority < .001).

The rate of stroke or systemic embolism was similar between the VKA and rivaroxaban groups (75 vs. 94 events), although ischemic strokes were significantly lower with VKA (48 vs. 74 events).
 

No easy explanation

Deaths were significantly lower with VKA than rivaroxaban, at 442 versus 552 (restricted mean survival time for death, 1,608 vs. 1,587 days; difference, −72 days; 95% CI, –117 to –28 days).

“This reduction is not easily explained,” Dr. Karthikeyan acknowledged. “We cannot explain this reduction by the reduction in stroke that we saw because the number of deaths that are prevented by VKA are far larger than the number of strokes that are prevented. Moreover, the number of deaths were mainly heart failure or sudden deaths.”

Numbers of patients with major bleeding were also similar in the VKA and rivaroxaban groups (56 vs. 40 patients; P = .18), although numbers with fatal bleeding were lower with rivaroxaban (15 vs. 4, respectively).

By design, there were more physician interactions for monthly monitoring of INR in the VKA group, “but we do not believe such a large reduction can be explained entirely by increased health care contact,” he said. Moreover, there was no significant between-group difference in heart failure medications or hospitalizations or the need for valve replacement.

Almost a quarter (23%) of patients in the rivaroxaban group permanently discontinued the study drug versus just 6% in the VKA group.

Importantly, the mortality benefit emerged much later than in other trials and coincided with the time when the INR became therapeutic at about 3 years, Dr. Karthikeyan said. But it is unknown whether this is because of the INR or an unrelated effect.
 

More physician contact

Following the presentation, session cochair C. Michael Gibson, MD, Baim Institute for Clinical Research, Harvard Medical School, Boston, questioned the 23% discontinuation rate for rivaroxaban. “Is this really a superiority of warfarin or is this superiority of having someone come in and see their physician for a lot of checks on their INR?”

In response, Dr. Karthikeyan said that permanent discontinuation rates were about 20%-25% in shorter-duration direct oral anticoagulant trials, such as RELY, ROCKET-AF, and ARISTOLE, and exceeded 30% in ENGAGE-AF with 2.8 years’ follow-up.

“So, this is not new,” he said, adding that 31.4% of rivaroxaban patients did so for valve replacement surgery and subsequently received nonstudy VKA.

Dr. Lopes said it is important to keep in mind that INVICTUS enrolled a “very different population” that was younger (mean age, 50.5 years), was much more often female (72.3%), and had fewer comorbidities than patients with AFib who did not have rheumatic heart disease in the pivotal trials.

“It will be interesting to see the treatment effect according to mitral stenosis severity, since we had about 30% with mild mitral stenosis and additionally 18% of patients without mitral stenosis,” he added.

Co–principal investigator Stuart J. Connolly, MD, from the Population Health Research Institute, said physician contacts may be a factor but that the mortality difference was clear, highly significant, and sufficiently powered.

“What’s amazing is that what we’re seeing here is something that hasn’t been previously described with VKA or warfarin, which is that it reduces mortality,” he said in an interview.

Rivaroxaban has never been shown to reduce mortality in any particular condition, and a meta-analysis of other novel oral anticoagulants shows only a small reduction in mortality, caused almost completely by less intracranial hemorrhage than warfarin, he added. “So, we don’t think this is a problem with rivaroxaban. In some ways, rivaroxaban is an innocent bystander to a trial of warfarin in patients with rheumatic heart disease and atrial fibrillation.”

Dr. Connolly said more work is needed to explain the findings and analyses are planned to see which patients are at highest risk for death as well as looking at the relationship between INR control and outcomes.

“We need to do more research on what it is about VKA that could explain this,” he said. “Is it affecting the myocardium in some way, is it preventing fibrosis, is there some off target effect, not on the anticoagulation system, that could explain this?”

Athena Poppas, MD, chief of cardiology at Brown University, Providence, R.I., and past president of the American College of Cardiology, said “INVICTUS is an incredibly important study that needed to be done.”

“The results – though disappointing and surprising in some ways – I don’t think we can explain them away and change what we are doing right now,” she said in an interview.

Although warfarin is a cheap drug, Dr. Poppas said, it would be tremendously helpful to have an alternative treatment for these patients. Mechanistic studies are needed to understand the observed mortality advantage and low bleeding rates but that trials of other novel anticoagulants are also needed.

“But I’m not sure that will happen,” she added. “It’s unlikely to be industry sponsored, so it would be a very expensive lift with a low likelihood of success.”

In an editorial accompanying the paper, Gregory Y.H. Lip, MD, University of Liverpool (England), pointed out that observational data show similar or even higher risks for major bleeding with rivaroxaban than with warfarin. “To improve outcomes in these patients, we therefore need to look beyond anticoagulation alone or beyond a type of anticoagulation drug per se. Indeed, a one-size-fits-all approach may not be appropriate.”

The study was funded by an unrestricted grant from Bayer. Dr. Karthikeyan and Dr. Poppas reported no relevant conflicts of interest.

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

Patients with heart failure (HF) who received two doses of COVID mRNA vaccines were not more likely to have worsening disease, venous thromboembolism, or myocarditis within 90 days than similar unvaccinated patients, in a case-control study in Denmark.

Moreover, in the 90 days after receiving the second shot, vaccinated patients were less likely to die of any cause, compared with unvaccinated patients during a similar 90-day period.

Caroline Sindet-Pedersen, PhD, Herlev and Gentofte Hospital, Hellerup, Denmark, and colleagues presented these findings at the annual congress of the European Society of Cardiology.
 

Major risk is not receiving vaccine

These results “confirm that the major risk for patients with HF is not receiving vaccination for COVID-19,” Marco Metra, MD, who was not involved with this research, said in an interview.

Dr. Metra was coauthor of an ESC guidance for the diagnosis and management of cardiovascular disease during the COVID-19 pandemic, published online ahead of print November 2021 in the European Heart Journal.

The guidance explains that patients with HF are at increased risk for hospitalization, need for mechanical ventilation, and death because of COVID-19, and that vaccination reduces the risk for serious illness from COVID-19, Dr. Sindet-Pedersen and colleagues explained in a press release from the ESC.

However, “concerns remain,” they added, “about the safety of the SARS-CoV-2 mRNA vaccines in heart failure patients, due to a perceived increased risk of cardiovascular side effects.”

The study findings suggest that “there should be no concern about cardiovascular side effects from mRNA vaccines in heart failure patients,” Dr. Sindet-Pedersen and colleagues summarized.

The results also “point to a beneficial effect of vaccination on mortality” and “indicate that patients with HF should be prioritized for COVID-19 vaccinations and boosters,” they added.

“There are ongoing concerns about the safety of COVID-19 vaccination in fragile patients and patients with heart failure,” said Dr. Metra, professor of cardiology and director of the Institute of Cardiology of the Civil Hospital and University of Brescia (Italy).

“These concerns are not based on evidence but just on reports of rare side effects (namely, myocarditis and pericarditis) in vaccinated people,” he added.

Dr. Metra also coauthored a position paper on COVID-19 vaccination in patients with HF from the Heart Failure Association of the ESC, which was published online October 2021 in the European Journal of Heart Failure.

“The current study,” he summarized, “shows a lower risk of mortality among patients vaccinated, compared with those not vaccinated.

“It has limitations,” he cautioned, “as it is not a prospective randomized study, but [rather] an observational one with comparison between vaccinated and not vaccinated patients with similar characteristics.

“However, it was done in a large population,” he noted, “and its results confirm that the major risk for patients with HF is not receiving vaccination for COVID-19.”

95% of patients with HF in Denmark double vaccinated

The group did not analyze the types of all-cause death in their study, Dr. Sindet-Pedersen clarified in an interview.

Other studies have shown that vaccines are associated with improved survival, she noted. For example, bacillus Calmette-Guérin vaccines and the measles vaccines have been linked with a decreased risk for nonspecific mortality in children, and influenza vaccines are associated with decreased all-cause mortality in patients with HF.

The rates of vaccination in this study were much higher than those for patients with HF in the United States.

In a study of 7,094 patients with HF seen at the Mount Sinai Health System between January 2021 and January 2022, 31% of patients were fully vaccinated with two doses and 14.8% had also received a booster, as per Centers for Disease Control and Prevention guidance. However, another 9.1% of patients were only partially vaccinated with one dose, and 45% remained unvaccinated by January 2022,

In the current study, “the uptake was very high,” Dr. Sindet-Pedersen noted, that is, “95% of the prevalent heart failure patients in 2021 received a vaccine.”

“It might be that the last 5% of the patients that did not receive a vaccine were too ill [terminal] to receive the vaccine,” she speculated, “or that was due to personal reasons.”

The researchers identified 50,893 patients with HF who were double vaccinated in 2021 and they matched them with 50,893 unvaccinated patients with HF in 2019 (prepandemic), with the same age, sex, HF duration, use of HF medications, ischemic heart disease, cancer, diabetes, atrial fibrillation, and admission with HF within 90 days.

Almost all patients in the vaccinated group received the Pfizer/BioNTech mRNA vaccine (92%) and the rest received the Moderna mRNA vaccine (8%), in 2021.

The patients had a mean age of 74, and 64% were men. They had HF for a median of 4.1 years.

During the 90-day follow-up, 1,311 patients in the unvaccinated cohort (2.56%) and 1,113 patients in the vaccinated cohort (2.23%) died; there was a significantly lower risk for all-cause death in the vaccinated cohort versus the unvaccinated cohort (–0.33 percentage points; 95% CI, –0.52 to –0.15 percentage points).

The risk for worsening heart failure was 1.1% in each group; myocarditis and venous thromboembolism were extremely rare, and risks for these conditions were not significantly different in the two groups.

The researchers and Dr. Metra declared they have no relevant financial disclosures. Dr. Metra is editor-in-chief of the European Journal of Heart Failure and senior consulting editor of the European Heart Journal.

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

Patients with heart failure (HF) who received two doses of COVID mRNA vaccines were not more likely to have worsening disease, venous thromboembolism, or myocarditis within 90 days than similar unvaccinated patients, in a case-control study in Denmark.

Moreover, in the 90 days after receiving the second shot, vaccinated patients were less likely to die of any cause, compared with unvaccinated patients during a similar 90-day period.

Caroline Sindet-Pedersen, PhD, Herlev and Gentofte Hospital, Hellerup, Denmark, and colleagues presented these findings at the annual congress of the European Society of Cardiology.
 

Major risk is not receiving vaccine

These results “confirm that the major risk for patients with HF is not receiving vaccination for COVID-19,” Marco Metra, MD, who was not involved with this research, said in an interview.

Dr. Metra was coauthor of an ESC guidance for the diagnosis and management of cardiovascular disease during the COVID-19 pandemic, published online ahead of print November 2021 in the European Heart Journal.

The guidance explains that patients with HF are at increased risk for hospitalization, need for mechanical ventilation, and death because of COVID-19, and that vaccination reduces the risk for serious illness from COVID-19, Dr. Sindet-Pedersen and colleagues explained in a press release from the ESC.

However, “concerns remain,” they added, “about the safety of the SARS-CoV-2 mRNA vaccines in heart failure patients, due to a perceived increased risk of cardiovascular side effects.”

The study findings suggest that “there should be no concern about cardiovascular side effects from mRNA vaccines in heart failure patients,” Dr. Sindet-Pedersen and colleagues summarized.

The results also “point to a beneficial effect of vaccination on mortality” and “indicate that patients with HF should be prioritized for COVID-19 vaccinations and boosters,” they added.

“There are ongoing concerns about the safety of COVID-19 vaccination in fragile patients and patients with heart failure,” said Dr. Metra, professor of cardiology and director of the Institute of Cardiology of the Civil Hospital and University of Brescia (Italy).

“These concerns are not based on evidence but just on reports of rare side effects (namely, myocarditis and pericarditis) in vaccinated people,” he added.

Dr. Metra also coauthored a position paper on COVID-19 vaccination in patients with HF from the Heart Failure Association of the ESC, which was published online October 2021 in the European Journal of Heart Failure.

“The current study,” he summarized, “shows a lower risk of mortality among patients vaccinated, compared with those not vaccinated.

“It has limitations,” he cautioned, “as it is not a prospective randomized study, but [rather] an observational one with comparison between vaccinated and not vaccinated patients with similar characteristics.

“However, it was done in a large population,” he noted, “and its results confirm that the major risk for patients with HF is not receiving vaccination for COVID-19.”

95% of patients with HF in Denmark double vaccinated

The group did not analyze the types of all-cause death in their study, Dr. Sindet-Pedersen clarified in an interview.

Other studies have shown that vaccines are associated with improved survival, she noted. For example, bacillus Calmette-Guérin vaccines and the measles vaccines have been linked with a decreased risk for nonspecific mortality in children, and influenza vaccines are associated with decreased all-cause mortality in patients with HF.

The rates of vaccination in this study were much higher than those for patients with HF in the United States.

In a study of 7,094 patients with HF seen at the Mount Sinai Health System between January 2021 and January 2022, 31% of patients were fully vaccinated with two doses and 14.8% had also received a booster, as per Centers for Disease Control and Prevention guidance. However, another 9.1% of patients were only partially vaccinated with one dose, and 45% remained unvaccinated by January 2022,

In the current study, “the uptake was very high,” Dr. Sindet-Pedersen noted, that is, “95% of the prevalent heart failure patients in 2021 received a vaccine.”

“It might be that the last 5% of the patients that did not receive a vaccine were too ill [terminal] to receive the vaccine,” she speculated, “or that was due to personal reasons.”

The researchers identified 50,893 patients with HF who were double vaccinated in 2021 and they matched them with 50,893 unvaccinated patients with HF in 2019 (prepandemic), with the same age, sex, HF duration, use of HF medications, ischemic heart disease, cancer, diabetes, atrial fibrillation, and admission with HF within 90 days.

Almost all patients in the vaccinated group received the Pfizer/BioNTech mRNA vaccine (92%) and the rest received the Moderna mRNA vaccine (8%), in 2021.

The patients had a mean age of 74, and 64% were men. They had HF for a median of 4.1 years.

During the 90-day follow-up, 1,311 patients in the unvaccinated cohort (2.56%) and 1,113 patients in the vaccinated cohort (2.23%) died; there was a significantly lower risk for all-cause death in the vaccinated cohort versus the unvaccinated cohort (–0.33 percentage points; 95% CI, –0.52 to –0.15 percentage points).

The risk for worsening heart failure was 1.1% in each group; myocarditis and venous thromboembolism were extremely rare, and risks for these conditions were not significantly different in the two groups.

The researchers and Dr. Metra declared they have no relevant financial disclosures. Dr. Metra is editor-in-chief of the European Journal of Heart Failure and senior consulting editor of the European Heart Journal.

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

Patients with heart failure (HF) who received two doses of COVID mRNA vaccines were not more likely to have worsening disease, venous thromboembolism, or myocarditis within 90 days than similar unvaccinated patients, in a case-control study in Denmark.

Moreover, in the 90 days after receiving the second shot, vaccinated patients were less likely to die of any cause, compared with unvaccinated patients during a similar 90-day period.

Caroline Sindet-Pedersen, PhD, Herlev and Gentofte Hospital, Hellerup, Denmark, and colleagues presented these findings at the annual congress of the European Society of Cardiology.
 

Major risk is not receiving vaccine

These results “confirm that the major risk for patients with HF is not receiving vaccination for COVID-19,” Marco Metra, MD, who was not involved with this research, said in an interview.

Dr. Metra was coauthor of an ESC guidance for the diagnosis and management of cardiovascular disease during the COVID-19 pandemic, published online ahead of print November 2021 in the European Heart Journal.

The guidance explains that patients with HF are at increased risk for hospitalization, need for mechanical ventilation, and death because of COVID-19, and that vaccination reduces the risk for serious illness from COVID-19, Dr. Sindet-Pedersen and colleagues explained in a press release from the ESC.

However, “concerns remain,” they added, “about the safety of the SARS-CoV-2 mRNA vaccines in heart failure patients, due to a perceived increased risk of cardiovascular side effects.”

The study findings suggest that “there should be no concern about cardiovascular side effects from mRNA vaccines in heart failure patients,” Dr. Sindet-Pedersen and colleagues summarized.

The results also “point to a beneficial effect of vaccination on mortality” and “indicate that patients with HF should be prioritized for COVID-19 vaccinations and boosters,” they added.

“There are ongoing concerns about the safety of COVID-19 vaccination in fragile patients and patients with heart failure,” said Dr. Metra, professor of cardiology and director of the Institute of Cardiology of the Civil Hospital and University of Brescia (Italy).

“These concerns are not based on evidence but just on reports of rare side effects (namely, myocarditis and pericarditis) in vaccinated people,” he added.

Dr. Metra also coauthored a position paper on COVID-19 vaccination in patients with HF from the Heart Failure Association of the ESC, which was published online October 2021 in the European Journal of Heart Failure.

“The current study,” he summarized, “shows a lower risk of mortality among patients vaccinated, compared with those not vaccinated.

“It has limitations,” he cautioned, “as it is not a prospective randomized study, but [rather] an observational one with comparison between vaccinated and not vaccinated patients with similar characteristics.

“However, it was done in a large population,” he noted, “and its results confirm that the major risk for patients with HF is not receiving vaccination for COVID-19.”

95% of patients with HF in Denmark double vaccinated

The group did not analyze the types of all-cause death in their study, Dr. Sindet-Pedersen clarified in an interview.

Other studies have shown that vaccines are associated with improved survival, she noted. For example, bacillus Calmette-Guérin vaccines and the measles vaccines have been linked with a decreased risk for nonspecific mortality in children, and influenza vaccines are associated with decreased all-cause mortality in patients with HF.

The rates of vaccination in this study were much higher than those for patients with HF in the United States.

In a study of 7,094 patients with HF seen at the Mount Sinai Health System between January 2021 and January 2022, 31% of patients were fully vaccinated with two doses and 14.8% had also received a booster, as per Centers for Disease Control and Prevention guidance. However, another 9.1% of patients were only partially vaccinated with one dose, and 45% remained unvaccinated by January 2022,

In the current study, “the uptake was very high,” Dr. Sindet-Pedersen noted, that is, “95% of the prevalent heart failure patients in 2021 received a vaccine.”

“It might be that the last 5% of the patients that did not receive a vaccine were too ill [terminal] to receive the vaccine,” she speculated, “or that was due to personal reasons.”

The researchers identified 50,893 patients with HF who were double vaccinated in 2021 and they matched them with 50,893 unvaccinated patients with HF in 2019 (prepandemic), with the same age, sex, HF duration, use of HF medications, ischemic heart disease, cancer, diabetes, atrial fibrillation, and admission with HF within 90 days.

Almost all patients in the vaccinated group received the Pfizer/BioNTech mRNA vaccine (92%) and the rest received the Moderna mRNA vaccine (8%), in 2021.

The patients had a mean age of 74, and 64% were men. They had HF for a median of 4.1 years.

During the 90-day follow-up, 1,311 patients in the unvaccinated cohort (2.56%) and 1,113 patients in the vaccinated cohort (2.23%) died; there was a significantly lower risk for all-cause death in the vaccinated cohort versus the unvaccinated cohort (–0.33 percentage points; 95% CI, –0.52 to –0.15 percentage points).

The risk for worsening heart failure was 1.1% in each group; myocarditis and venous thromboembolism were extremely rare, and risks for these conditions were not significantly different in the two groups.

The researchers and Dr. Metra declared they have no relevant financial disclosures. Dr. Metra is editor-in-chief of the European Journal of Heart Failure and senior consulting editor of the European Heart Journal.

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

The new factor XI inhibitor antithrombotic, milvexian (Bristol-Myers Squibb/Janssen), has shown promising results in a dose-finding phase 2 trial in patients with acute ischemic stroke or transient ischemic attack (TIA), when given in addition to dual antiplatelet therapy.

Although there was no significant reduction in the primary composite endpoint of ischemic stroke or incident infarct on brain MRI at 90 days with milvexian versus placebo in the AXIOMATIC-SSP study, with no apparent dose response, the drug numerically reduced the risk for symptomatic ischemic stroke at most doses. And doses from 25 mg to 100 mg twice daily showed an approximately 30% relative risk reduction in symptomatic ischemic stroke versus placebo.

Milvexian at 25 mg once and twice daily was associated with a low incidence of major bleeding; a moderate increase in bleeding was seen with higher doses.

There was no increase in severe bleeding, compared with placebo, and no fatal bleeding occurred any study group.

“Based on the observed efficacy signal for ischemic stroke, the bleeding profile, and the overall safety and tolerability, milvexian will be further studied in a phase 3 trial in a similar stroke population,” concluded lead investigator, Mukul Sharma, MD, associate professor of medicine at McMaster University, Hamilton, Ont.

Dr. Sharma presented the AXIOMATIC-SSP study results at the annual congress of the European Society of Cardiology.
 

New generation

Dr. Sharma explained that factor XI inhibitors represent the latest hope for a new generation of antithrombotic drugs with a low bleeding risk.

This has come about after observations that individuals born with factor XI deficiency have lower rates of ischemic stroke and thromboembolism than matched controls, without an offsetting increase in cerebral hemorrhage. In addition, spontaneous bleeding in these individuals is uncommon, and it is thought that factor XI is a strong driver of thrombus growth but plays a less important role in hemostasis, he noted.

“I think there is a tremendous niche for these drugs in stroke prevention,” Dr. Sharma said in an interview. “There is a huge unmet need in stroke patients for something other than aspirin over the long term which is effective but doesn’t cause hemorrhage.”

Dr. Sharma reported that antithrombotic efficacy of milvexian has already been demonstrated in a study of patients undergoing knee replacement in which the drug showed similar or increased efficacy in reducing thromboembolism, compared with enoxaparin, 40 mg, without an increase in major bleeding.

The aim of the current AXIOMATIC-SSP study was to find a dose suitable for use in the treatment of patients with acute stroke or TIA.

Patients with an acute ischemic stroke or TIA are at a high risk for another stroke in the first few months. Although antiplatelet drugs have reduced this event rate, there is still a significant residual risk for ischemic stroke, and the potential for major bleeding with additional antithrombotic therapies has limited the effectiveness of these options, Dr. Sharma explained. Currently, no anticoagulants are approved for noncardioembolic ischemic stroke prevention in the early phase.

The AXIOMATIC-SSP study included 2,366 patients within 48 hours of onset of a mild to moderate acute nonlacunar ischemic stroke. All patients had visible atherosclerotic plaque in a vessel supplying the affected brain region, and they all received background treatment with open-label aspirin and clopidogrel for 21 days, followed by open-label aspirin alone from days 22 to 90.

They were randomly assigned to one of five doses of milvexian (25, 50, 100, or 200 mg twice daily or 25 mg once daily) or placebo daily for 90 days.

The primary efficacy endpoint (symptomatic ischemic stroke or incident infarct on brain MRI) was numerically lower at the 50-mg and 100-mg twice-daily doses, and there was no apparent dose response (placebo, 16.6%; 25 mg once daily, 16.2%; 25 mg twice daily, 18.5%; 50 mg twice daily, 14.1%; 100 mg twice daily, 14.7%; 200 mg twice daily, 16.4%).

However, milvexian was associated with a numerically lower risk for clinical ischemic stroke at all doses except 200 mg twice daily, with doses from 25 to 100 mg twice daily showing an approximately 30% relative risk reduction versus placebo (placebo, 5.5%; 25 mg once daily, 4.6%; 25 mg twice daily, 3.8%; 50 mg twice daily, 4.0%; 100 mg twice daily, 3.5%; 200 mg twice daily, 7.7%).

The main safety endpoint was major bleeding, defined as Bleeding Academic Research Consortium type 3 or 5 bleeding. This was similar to placebo for milvexian 25 mg once daily and twice daily (all 0.6%) but was moderately increased in the 50 mg twice daily (1.5%), 100 mg twice daily (1.6%), and 200 mg twice daily (1.5%) groups.

Most major bleeding episodes were gastrointestinal. There was no increase in severe bleeding or symptomatic intracranial hemorrhage versus placebo, and no fatal bleeding occurred in any arm of the study.
 

Incremental improvement

On the hope for a class of drugs that reduce ischemic events without increasing bleeding, Dr. Sharma said, “we keep hoping for a home run where there is no increase in bleeding with a new generation of antithrombotic, but what we seem to get is an incremental improvement with each new class.

“Factor Xa inhibitors have a lower rate of bleeding, compared to warfarin. I think we will see another incremental improvement in bleeding with these new factor XI inhibitors and hopefully less of the more serious bleeding,” he said in an interview.

He pointed out that, in this study, milvexian was given on top of dual antiplatelet therapy. “In stroke neurology that sounds very risky as we know that going from a single antiplatelet to two antiplatelet agents increases the risk of bleeding and now we are adding in a third antithrombotic, but we feel comfortable doing it because of what has been observed in patients who have a genetic deficiency of factor XI – very low rates of spontaneous bleeding and they don’t bleed intracranially largely,” he added.

In addition to milvexian, another oral factor XI inhibitor, asundexian (Bayer), is also in development, and similar results were reported in a phase 2 stroke trial (PACIFIC-STROKE) at the same ESC session.

Both drugs are now believed to be going forward into phase 3 trials.

Discussant of the study at the ESC Hotline session, Giovanna Liuzzo, MD, Catholic University of Rome, highlighted the large unmet need for stroke therapies, noting that patients with acute stroke or TIA have a stroke recurrence rate of 5% at 30 days and 17% at 2 years. Although antiplatelet agents are recommended, the use of anticoagulants has been limited by concerns over bleeding risk, and the factor XI inhibitors are promising in that they have the potential for a lower bleeding risk.

She suggested that results from the AXIOMATIC-SSP could point to a dose of milvexian of 25 mg twice daily as a balance between efficacy and bleeding to be taken into larger phase 3 trials

“The jury is still out on the safety and efficacy of milvexian as an adjunct to dual antiplatelet therapy for the prevention of recurrent noncardioembolic stroke,” Dr. Liuzzo concluded. “Only large-scale phase 3 trials will establish the safety and efficacy of factor XI inhibitors in the prevention of venous and arterial thrombosis.”

The AXIOMATIC-SSP study was funded by the Bristol-Myers Squibb/Janssen alliance. Dr. Sharma reported research contracts with Bristol-Myers Squibb, Bayer, and AstraZeneca, and consulting fees from Janssen, Bayer, HLS Therapeutics, and Alexion.

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

The new factor XI inhibitor antithrombotic, milvexian (Bristol-Myers Squibb/Janssen), has shown promising results in a dose-finding phase 2 trial in patients with acute ischemic stroke or transient ischemic attack (TIA), when given in addition to dual antiplatelet therapy.

Although there was no significant reduction in the primary composite endpoint of ischemic stroke or incident infarct on brain MRI at 90 days with milvexian versus placebo in the AXIOMATIC-SSP study, with no apparent dose response, the drug numerically reduced the risk for symptomatic ischemic stroke at most doses. And doses from 25 mg to 100 mg twice daily showed an approximately 30% relative risk reduction in symptomatic ischemic stroke versus placebo.

Milvexian at 25 mg once and twice daily was associated with a low incidence of major bleeding; a moderate increase in bleeding was seen with higher doses.

There was no increase in severe bleeding, compared with placebo, and no fatal bleeding occurred any study group.

“Based on the observed efficacy signal for ischemic stroke, the bleeding profile, and the overall safety and tolerability, milvexian will be further studied in a phase 3 trial in a similar stroke population,” concluded lead investigator, Mukul Sharma, MD, associate professor of medicine at McMaster University, Hamilton, Ont.

Dr. Sharma presented the AXIOMATIC-SSP study results at the annual congress of the European Society of Cardiology.
 

New generation

Dr. Sharma explained that factor XI inhibitors represent the latest hope for a new generation of antithrombotic drugs with a low bleeding risk.

This has come about after observations that individuals born with factor XI deficiency have lower rates of ischemic stroke and thromboembolism than matched controls, without an offsetting increase in cerebral hemorrhage. In addition, spontaneous bleeding in these individuals is uncommon, and it is thought that factor XI is a strong driver of thrombus growth but plays a less important role in hemostasis, he noted.

“I think there is a tremendous niche for these drugs in stroke prevention,” Dr. Sharma said in an interview. “There is a huge unmet need in stroke patients for something other than aspirin over the long term which is effective but doesn’t cause hemorrhage.”

Dr. Sharma reported that antithrombotic efficacy of milvexian has already been demonstrated in a study of patients undergoing knee replacement in which the drug showed similar or increased efficacy in reducing thromboembolism, compared with enoxaparin, 40 mg, without an increase in major bleeding.

The aim of the current AXIOMATIC-SSP study was to find a dose suitable for use in the treatment of patients with acute stroke or TIA.

Patients with an acute ischemic stroke or TIA are at a high risk for another stroke in the first few months. Although antiplatelet drugs have reduced this event rate, there is still a significant residual risk for ischemic stroke, and the potential for major bleeding with additional antithrombotic therapies has limited the effectiveness of these options, Dr. Sharma explained. Currently, no anticoagulants are approved for noncardioembolic ischemic stroke prevention in the early phase.

The AXIOMATIC-SSP study included 2,366 patients within 48 hours of onset of a mild to moderate acute nonlacunar ischemic stroke. All patients had visible atherosclerotic plaque in a vessel supplying the affected brain region, and they all received background treatment with open-label aspirin and clopidogrel for 21 days, followed by open-label aspirin alone from days 22 to 90.

They were randomly assigned to one of five doses of milvexian (25, 50, 100, or 200 mg twice daily or 25 mg once daily) or placebo daily for 90 days.

The primary efficacy endpoint (symptomatic ischemic stroke or incident infarct on brain MRI) was numerically lower at the 50-mg and 100-mg twice-daily doses, and there was no apparent dose response (placebo, 16.6%; 25 mg once daily, 16.2%; 25 mg twice daily, 18.5%; 50 mg twice daily, 14.1%; 100 mg twice daily, 14.7%; 200 mg twice daily, 16.4%).

However, milvexian was associated with a numerically lower risk for clinical ischemic stroke at all doses except 200 mg twice daily, with doses from 25 to 100 mg twice daily showing an approximately 30% relative risk reduction versus placebo (placebo, 5.5%; 25 mg once daily, 4.6%; 25 mg twice daily, 3.8%; 50 mg twice daily, 4.0%; 100 mg twice daily, 3.5%; 200 mg twice daily, 7.7%).

The main safety endpoint was major bleeding, defined as Bleeding Academic Research Consortium type 3 or 5 bleeding. This was similar to placebo for milvexian 25 mg once daily and twice daily (all 0.6%) but was moderately increased in the 50 mg twice daily (1.5%), 100 mg twice daily (1.6%), and 200 mg twice daily (1.5%) groups.

Most major bleeding episodes were gastrointestinal. There was no increase in severe bleeding or symptomatic intracranial hemorrhage versus placebo, and no fatal bleeding occurred in any arm of the study.
 

Incremental improvement

On the hope for a class of drugs that reduce ischemic events without increasing bleeding, Dr. Sharma said, “we keep hoping for a home run where there is no increase in bleeding with a new generation of antithrombotic, but what we seem to get is an incremental improvement with each new class.

“Factor Xa inhibitors have a lower rate of bleeding, compared to warfarin. I think we will see another incremental improvement in bleeding with these new factor XI inhibitors and hopefully less of the more serious bleeding,” he said in an interview.

He pointed out that, in this study, milvexian was given on top of dual antiplatelet therapy. “In stroke neurology that sounds very risky as we know that going from a single antiplatelet to two antiplatelet agents increases the risk of bleeding and now we are adding in a third antithrombotic, but we feel comfortable doing it because of what has been observed in patients who have a genetic deficiency of factor XI – very low rates of spontaneous bleeding and they don’t bleed intracranially largely,” he added.

In addition to milvexian, another oral factor XI inhibitor, asundexian (Bayer), is also in development, and similar results were reported in a phase 2 stroke trial (PACIFIC-STROKE) at the same ESC session.

Both drugs are now believed to be going forward into phase 3 trials.

Discussant of the study at the ESC Hotline session, Giovanna Liuzzo, MD, Catholic University of Rome, highlighted the large unmet need for stroke therapies, noting that patients with acute stroke or TIA have a stroke recurrence rate of 5% at 30 days and 17% at 2 years. Although antiplatelet agents are recommended, the use of anticoagulants has been limited by concerns over bleeding risk, and the factor XI inhibitors are promising in that they have the potential for a lower bleeding risk.

She suggested that results from the AXIOMATIC-SSP could point to a dose of milvexian of 25 mg twice daily as a balance between efficacy and bleeding to be taken into larger phase 3 trials

“The jury is still out on the safety and efficacy of milvexian as an adjunct to dual antiplatelet therapy for the prevention of recurrent noncardioembolic stroke,” Dr. Liuzzo concluded. “Only large-scale phase 3 trials will establish the safety and efficacy of factor XI inhibitors in the prevention of venous and arterial thrombosis.”

The AXIOMATIC-SSP study was funded by the Bristol-Myers Squibb/Janssen alliance. Dr. Sharma reported research contracts with Bristol-Myers Squibb, Bayer, and AstraZeneca, and consulting fees from Janssen, Bayer, HLS Therapeutics, and Alexion.

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

The new factor XI inhibitor antithrombotic, milvexian (Bristol-Myers Squibb/Janssen), has shown promising results in a dose-finding phase 2 trial in patients with acute ischemic stroke or transient ischemic attack (TIA), when given in addition to dual antiplatelet therapy.

Although there was no significant reduction in the primary composite endpoint of ischemic stroke or incident infarct on brain MRI at 90 days with milvexian versus placebo in the AXIOMATIC-SSP study, with no apparent dose response, the drug numerically reduced the risk for symptomatic ischemic stroke at most doses. And doses from 25 mg to 100 mg twice daily showed an approximately 30% relative risk reduction in symptomatic ischemic stroke versus placebo.

Milvexian at 25 mg once and twice daily was associated with a low incidence of major bleeding; a moderate increase in bleeding was seen with higher doses.

There was no increase in severe bleeding, compared with placebo, and no fatal bleeding occurred any study group.

“Based on the observed efficacy signal for ischemic stroke, the bleeding profile, and the overall safety and tolerability, milvexian will be further studied in a phase 3 trial in a similar stroke population,” concluded lead investigator, Mukul Sharma, MD, associate professor of medicine at McMaster University, Hamilton, Ont.

Dr. Sharma presented the AXIOMATIC-SSP study results at the annual congress of the European Society of Cardiology.
 

New generation

Dr. Sharma explained that factor XI inhibitors represent the latest hope for a new generation of antithrombotic drugs with a low bleeding risk.

This has come about after observations that individuals born with factor XI deficiency have lower rates of ischemic stroke and thromboembolism than matched controls, without an offsetting increase in cerebral hemorrhage. In addition, spontaneous bleeding in these individuals is uncommon, and it is thought that factor XI is a strong driver of thrombus growth but plays a less important role in hemostasis, he noted.

“I think there is a tremendous niche for these drugs in stroke prevention,” Dr. Sharma said in an interview. “There is a huge unmet need in stroke patients for something other than aspirin over the long term which is effective but doesn’t cause hemorrhage.”

Dr. Sharma reported that antithrombotic efficacy of milvexian has already been demonstrated in a study of patients undergoing knee replacement in which the drug showed similar or increased efficacy in reducing thromboembolism, compared with enoxaparin, 40 mg, without an increase in major bleeding.

The aim of the current AXIOMATIC-SSP study was to find a dose suitable for use in the treatment of patients with acute stroke or TIA.

Patients with an acute ischemic stroke or TIA are at a high risk for another stroke in the first few months. Although antiplatelet drugs have reduced this event rate, there is still a significant residual risk for ischemic stroke, and the potential for major bleeding with additional antithrombotic therapies has limited the effectiveness of these options, Dr. Sharma explained. Currently, no anticoagulants are approved for noncardioembolic ischemic stroke prevention in the early phase.

The AXIOMATIC-SSP study included 2,366 patients within 48 hours of onset of a mild to moderate acute nonlacunar ischemic stroke. All patients had visible atherosclerotic plaque in a vessel supplying the affected brain region, and they all received background treatment with open-label aspirin and clopidogrel for 21 days, followed by open-label aspirin alone from days 22 to 90.

They were randomly assigned to one of five doses of milvexian (25, 50, 100, or 200 mg twice daily or 25 mg once daily) or placebo daily for 90 days.

The primary efficacy endpoint (symptomatic ischemic stroke or incident infarct on brain MRI) was numerically lower at the 50-mg and 100-mg twice-daily doses, and there was no apparent dose response (placebo, 16.6%; 25 mg once daily, 16.2%; 25 mg twice daily, 18.5%; 50 mg twice daily, 14.1%; 100 mg twice daily, 14.7%; 200 mg twice daily, 16.4%).

However, milvexian was associated with a numerically lower risk for clinical ischemic stroke at all doses except 200 mg twice daily, with doses from 25 to 100 mg twice daily showing an approximately 30% relative risk reduction versus placebo (placebo, 5.5%; 25 mg once daily, 4.6%; 25 mg twice daily, 3.8%; 50 mg twice daily, 4.0%; 100 mg twice daily, 3.5%; 200 mg twice daily, 7.7%).

The main safety endpoint was major bleeding, defined as Bleeding Academic Research Consortium type 3 or 5 bleeding. This was similar to placebo for milvexian 25 mg once daily and twice daily (all 0.6%) but was moderately increased in the 50 mg twice daily (1.5%), 100 mg twice daily (1.6%), and 200 mg twice daily (1.5%) groups.

Most major bleeding episodes were gastrointestinal. There was no increase in severe bleeding or symptomatic intracranial hemorrhage versus placebo, and no fatal bleeding occurred in any arm of the study.
 

Incremental improvement

On the hope for a class of drugs that reduce ischemic events without increasing bleeding, Dr. Sharma said, “we keep hoping for a home run where there is no increase in bleeding with a new generation of antithrombotic, but what we seem to get is an incremental improvement with each new class.

“Factor Xa inhibitors have a lower rate of bleeding, compared to warfarin. I think we will see another incremental improvement in bleeding with these new factor XI inhibitors and hopefully less of the more serious bleeding,” he said in an interview.

He pointed out that, in this study, milvexian was given on top of dual antiplatelet therapy. “In stroke neurology that sounds very risky as we know that going from a single antiplatelet to two antiplatelet agents increases the risk of bleeding and now we are adding in a third antithrombotic, but we feel comfortable doing it because of what has been observed in patients who have a genetic deficiency of factor XI – very low rates of spontaneous bleeding and they don’t bleed intracranially largely,” he added.

In addition to milvexian, another oral factor XI inhibitor, asundexian (Bayer), is also in development, and similar results were reported in a phase 2 stroke trial (PACIFIC-STROKE) at the same ESC session.

Both drugs are now believed to be going forward into phase 3 trials.

Discussant of the study at the ESC Hotline session, Giovanna Liuzzo, MD, Catholic University of Rome, highlighted the large unmet need for stroke therapies, noting that patients with acute stroke or TIA have a stroke recurrence rate of 5% at 30 days and 17% at 2 years. Although antiplatelet agents are recommended, the use of anticoagulants has been limited by concerns over bleeding risk, and the factor XI inhibitors are promising in that they have the potential for a lower bleeding risk.

She suggested that results from the AXIOMATIC-SSP could point to a dose of milvexian of 25 mg twice daily as a balance between efficacy and bleeding to be taken into larger phase 3 trials

“The jury is still out on the safety and efficacy of milvexian as an adjunct to dual antiplatelet therapy for the prevention of recurrent noncardioembolic stroke,” Dr. Liuzzo concluded. “Only large-scale phase 3 trials will establish the safety and efficacy of factor XI inhibitors in the prevention of venous and arterial thrombosis.”

The AXIOMATIC-SSP study was funded by the Bristol-Myers Squibb/Janssen alliance. Dr. Sharma reported research contracts with Bristol-Myers Squibb, Bayer, and AstraZeneca, and consulting fees from Janssen, Bayer, HLS Therapeutics, and Alexion.

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

Allopurinol, a drug commonly used to treat gout, provided no benefit in terms of reducing cardiovascular (CV) events in patients with ischemic heart disease, new randomized trial results show.

Treatment of these patients without gout with 600 mg of allopurinol daily had no effect on composite primary endpoint outcomes, including nonfatal MI, nonfatal stroke, or CV death.

“ALL-HEART is the first large, prospective, randomized trial of the effect of allopurinol on major cardiovascular outcomes in patients with ischemic heart disease and provides robust evidence on the role of allopurinol in these patients,” principal investigator Isla Shelagh Mackenzie, MBChB (Honors), PhD, University of Dundee (Scotland), concluded at a press conference.

Their results suggest allopurinol should not be recommended for secondary prevention of events in this group, Dr. Mackenzie said. Although it remains an important treatment for gout, she added, “other avenues for treatment of ischemic heart disease should be explored in future.”

Results of the ALL-HEART (Allopurinol and Cardiovascular Outcomes in Ischemic Heart Disease) trial were presented at the annual congress of the European Society of Cardiology.
 

Gout treatment

Allopurinol is a xanthine oxidase inhibitor and acts by reducing serum uric acid levels and oxidative stress. Treatment is generally well tolerated, Dr. Mackenzie noted in her presentation, but some patients develop a rash, which can in some cases be serious or even fatal, progressing to Stevens-Johnson syndrome or toxic epidermal necrolysis, “particularly in certain ethnicities.” If rash develops, the advice is to stop treatment immediately.

“The importance of serum uric acid levels in cardiovascular disease is controversial, and there have been different reports over the years of how important they may be,” Dr. Mackenzie explained.

Observational studies have shown variable results, whereas intervention trials, most with fewer than 100 participants, have suggested potential improvements in factors such as blood pressure, endothelial function, left ventricular hypertrophy, or carotid intima-media thickness. Some have reported benefits in acute coronary syndrome and coronary artery bypass grafting, but others have not, she said. A previous study by their own group suggested an improvement in chest pain and exercise time in patients with chronic stable angina and documented coronary artery disease (CAD).

“So, until now, there have been no large prospective randomized trials of the effects of allopurinol on major cardiovascular outcomes in patients with ischemic heart disease,” Dr. Mackenzie said, and this was the aim of ALL-HEART.

ALL-HEART was a prospective, randomized, open-label, blinded-endpoint, multicenter trial. Patients with ischemia heart disease but no history of gout were recruited from 424 general practices across the United Kingdom, starting in February 2014 and with follow-up ending in September 2021. Participants were randomly assigned 1:1 to receive 600 mg of allopurinol daily or usual care.

“It was a decentralized trial, so the follow-up was largely remote after the first 6 weeks, and that included using record linkage data collected from centralized NHS [National Health Service] databases for hospitalizations and deaths in Scotland and England,” she said. The average follow-up was 4.8 years.

During that time, 258 (9.0%) participants in the allopurinol group and 76 (2.6%) in usual care withdrew from follow-up. By the end of the trial, 57.4% of patients in the allopurinol arm withdrew from randomized treatment.

Mean serum uric acid levels dropped from 0.34 mmol/L at baseline to 0.18 mmol/L at 6 weeks of treatment, “so we can see that the treatment was effective at lowering uric acid,” she noted.

In total, there were 5,721 patients in the final intention-to-treat analysis, and 639 patients had a first primary event.

For the primary outcome of nonfatal MI, nonfatal stroke, and cardiovascular death, there was no difference between the groups, the researchers reported, with a hazard ratio of 1.04 (95% confidence interval, 0.89-1.21; P = .65). Similarly, in secondary analyses, there were no differences in any of the component endpoints making up the primary outcome (nonfatal MI: HR, 0.97; 95% CI, 0.78-1.21; P = .81; nonfatal stroke: HR, 1.20; 95% CI, 0.89-1.60; P = .23; cardiovascular death: HR, 1.10; 95% CI, 0.85-1.43; P = .48), or in all-cause mortality (HR, 1.02; 95% CI, 0.87-1.20; P = .77), between the two groups, Dr. Mackenzie noted, “so a definitively neutral trial all round.”

In addition, no differences were seen in prespecified subgroups, including age, sex, estimated glomerular filtration rate, or diabetes, MI, heart failure, peripheral arterial disease, stroke, and stroke or transient ischemic attack at baseline.

There were also no significant effects on quality of life outcomes. Cost-effectiveness analyses are ongoing, although no differences are expected there, Dr. Mackenzie noted.

In terms of safety, incident cancers and all-cause mortality did not differ between groups. Serious adverse events were also similar between groups, Dr. Mackenzie said, “and there were no fatal treatment-related SAEs [serious adverse events] in the study.”

Another negative antioxidant trial

Invited discussant for the presentation, Leslie Cho, MD, of the Cleveland Clinic said that ALL-HEART, while an excellent trial with a pragmatic design, constitutes yet another negative antioxidant trial.

She pointed to three problems with this study and antioxidant trials in general. “First, the problem is with the antioxidant,” a xanthine oxidase inhibitor. “Xanthine oxidase is not a major trigger of oxidative stress. In a field of major players,” including nitric oxide, uncoupled endothelial nitric oxide synthase, and mitochondria myeloperoxidase, Dr. Cho said, “xanthine oxidase is a minor player.”

“Moreover, 57% of the patients stopped taking allopurinol, and rightfully so,” she said. Patients were receiving optimal medical therapies, many of which are also antioxidants, including statins, ACE inhibitors, angiotensin receptor blockers, and beta-blockers.

Second, the patient population was older, with an average age of 72 years. “This makes the ALL-HEART study a chronic angina study, chronic CAD study, one of the oldest modern day CAD trials. If you look at LoDoCo or ISCHEMIA trials, the average age is 63.” Patients also had established disease, many with previous revascularization.

The final issue seen with this trial, and all antioxidant trials, is that patient selection is not based on oxidative stress or antioxidant level. “The antioxidant trials have been disappointing at best. There is clear and convincing evidence that oxidative stress is involved in the pathogenesis of atherosclerosis, and yet study after study of antioxidant trials have been negative,” she said.

“Currently, there is no reliable measurement of global level of oxidative stress,” Dr. Cho noted. “Moreover, dose response was not tested, and if we cannot test the baseline antioxidant stress level of patients, we also cannot measure the effect of treatment on the global oxidative stress.”

So, “is there no hope for antioxidant trials?” she asked. Three factors will be required for future success, she said. “No. 1, selecting the right patient at the right time. No. 2, a reliable biomarker to measure oxidative stress to guide who should get therapy, and if the therapy is working. And lastly, targeted therapies that work on major triggers of oxidative stress.”

Also commenting on the results, B. Hadley Wilson, MD, executive vice chair of the Sanger Heart & Vascular Institute/Atrium Health, clinical professor of medicine at the University of North Carolina at Chapel Hill, and vice president of the American College of Cardiology, called ALL-HEART “an important and interesting study.”

“For years, cardiologists and others have been interested in allopurinol as an anti-inflammatory, xanthine oxidase inhibitor ... to prevent coronary ischemic events,” he said in an interview.

But this was a well-designed, well-conducted study, and “unfortunately there was no improvement in the primary outcome, no reduction in major cardiovascular events like myocardial infarction or stroke or cardiovascular death,” Dr. Wilson said. “So, it’s a bit of a disappointment that it’s not there as an important medication to help us with these patients with ischemic heart disease, but it’s also an important question answered — that we need to look at treatments for ischemic heart disease other than allopurinol.”

The trial was supported by the National Institute for Health and Care Research Health Technology Assessment Program in the United Kingdom. Dr. Mackenzie reported research contracts to her institution from NIHR HTA for this work, and other disclosures related to other work. Dr. Cho and Dr. Wilson reported no relevant disclosures.

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

Allopurinol, a drug commonly used to treat gout, provided no benefit in terms of reducing cardiovascular (CV) events in patients with ischemic heart disease, new randomized trial results show.

Treatment of these patients without gout with 600 mg of allopurinol daily had no effect on composite primary endpoint outcomes, including nonfatal MI, nonfatal stroke, or CV death.

“ALL-HEART is the first large, prospective, randomized trial of the effect of allopurinol on major cardiovascular outcomes in patients with ischemic heart disease and provides robust evidence on the role of allopurinol in these patients,” principal investigator Isla Shelagh Mackenzie, MBChB (Honors), PhD, University of Dundee (Scotland), concluded at a press conference.

Their results suggest allopurinol should not be recommended for secondary prevention of events in this group, Dr. Mackenzie said. Although it remains an important treatment for gout, she added, “other avenues for treatment of ischemic heart disease should be explored in future.”

Results of the ALL-HEART (Allopurinol and Cardiovascular Outcomes in Ischemic Heart Disease) trial were presented at the annual congress of the European Society of Cardiology.
 

Gout treatment

Allopurinol is a xanthine oxidase inhibitor and acts by reducing serum uric acid levels and oxidative stress. Treatment is generally well tolerated, Dr. Mackenzie noted in her presentation, but some patients develop a rash, which can in some cases be serious or even fatal, progressing to Stevens-Johnson syndrome or toxic epidermal necrolysis, “particularly in certain ethnicities.” If rash develops, the advice is to stop treatment immediately.

“The importance of serum uric acid levels in cardiovascular disease is controversial, and there have been different reports over the years of how important they may be,” Dr. Mackenzie explained.

Observational studies have shown variable results, whereas intervention trials, most with fewer than 100 participants, have suggested potential improvements in factors such as blood pressure, endothelial function, left ventricular hypertrophy, or carotid intima-media thickness. Some have reported benefits in acute coronary syndrome and coronary artery bypass grafting, but others have not, she said. A previous study by their own group suggested an improvement in chest pain and exercise time in patients with chronic stable angina and documented coronary artery disease (CAD).

“So, until now, there have been no large prospective randomized trials of the effects of allopurinol on major cardiovascular outcomes in patients with ischemic heart disease,” Dr. Mackenzie said, and this was the aim of ALL-HEART.

ALL-HEART was a prospective, randomized, open-label, blinded-endpoint, multicenter trial. Patients with ischemia heart disease but no history of gout were recruited from 424 general practices across the United Kingdom, starting in February 2014 and with follow-up ending in September 2021. Participants were randomly assigned 1:1 to receive 600 mg of allopurinol daily or usual care.

“It was a decentralized trial, so the follow-up was largely remote after the first 6 weeks, and that included using record linkage data collected from centralized NHS [National Health Service] databases for hospitalizations and deaths in Scotland and England,” she said. The average follow-up was 4.8 years.

During that time, 258 (9.0%) participants in the allopurinol group and 76 (2.6%) in usual care withdrew from follow-up. By the end of the trial, 57.4% of patients in the allopurinol arm withdrew from randomized treatment.

Mean serum uric acid levels dropped from 0.34 mmol/L at baseline to 0.18 mmol/L at 6 weeks of treatment, “so we can see that the treatment was effective at lowering uric acid,” she noted.

In total, there were 5,721 patients in the final intention-to-treat analysis, and 639 patients had a first primary event.

For the primary outcome of nonfatal MI, nonfatal stroke, and cardiovascular death, there was no difference between the groups, the researchers reported, with a hazard ratio of 1.04 (95% confidence interval, 0.89-1.21; P = .65). Similarly, in secondary analyses, there were no differences in any of the component endpoints making up the primary outcome (nonfatal MI: HR, 0.97; 95% CI, 0.78-1.21; P = .81; nonfatal stroke: HR, 1.20; 95% CI, 0.89-1.60; P = .23; cardiovascular death: HR, 1.10; 95% CI, 0.85-1.43; P = .48), or in all-cause mortality (HR, 1.02; 95% CI, 0.87-1.20; P = .77), between the two groups, Dr. Mackenzie noted, “so a definitively neutral trial all round.”

In addition, no differences were seen in prespecified subgroups, including age, sex, estimated glomerular filtration rate, or diabetes, MI, heart failure, peripheral arterial disease, stroke, and stroke or transient ischemic attack at baseline.

There were also no significant effects on quality of life outcomes. Cost-effectiveness analyses are ongoing, although no differences are expected there, Dr. Mackenzie noted.

In terms of safety, incident cancers and all-cause mortality did not differ between groups. Serious adverse events were also similar between groups, Dr. Mackenzie said, “and there were no fatal treatment-related SAEs [serious adverse events] in the study.”

Another negative antioxidant trial

Invited discussant for the presentation, Leslie Cho, MD, of the Cleveland Clinic said that ALL-HEART, while an excellent trial with a pragmatic design, constitutes yet another negative antioxidant trial.

She pointed to three problems with this study and antioxidant trials in general. “First, the problem is with the antioxidant,” a xanthine oxidase inhibitor. “Xanthine oxidase is not a major trigger of oxidative stress. In a field of major players,” including nitric oxide, uncoupled endothelial nitric oxide synthase, and mitochondria myeloperoxidase, Dr. Cho said, “xanthine oxidase is a minor player.”

“Moreover, 57% of the patients stopped taking allopurinol, and rightfully so,” she said. Patients were receiving optimal medical therapies, many of which are also antioxidants, including statins, ACE inhibitors, angiotensin receptor blockers, and beta-blockers.

Second, the patient population was older, with an average age of 72 years. “This makes the ALL-HEART study a chronic angina study, chronic CAD study, one of the oldest modern day CAD trials. If you look at LoDoCo or ISCHEMIA trials, the average age is 63.” Patients also had established disease, many with previous revascularization.

The final issue seen with this trial, and all antioxidant trials, is that patient selection is not based on oxidative stress or antioxidant level. “The antioxidant trials have been disappointing at best. There is clear and convincing evidence that oxidative stress is involved in the pathogenesis of atherosclerosis, and yet study after study of antioxidant trials have been negative,” she said.

“Currently, there is no reliable measurement of global level of oxidative stress,” Dr. Cho noted. “Moreover, dose response was not tested, and if we cannot test the baseline antioxidant stress level of patients, we also cannot measure the effect of treatment on the global oxidative stress.”

So, “is there no hope for antioxidant trials?” she asked. Three factors will be required for future success, she said. “No. 1, selecting the right patient at the right time. No. 2, a reliable biomarker to measure oxidative stress to guide who should get therapy, and if the therapy is working. And lastly, targeted therapies that work on major triggers of oxidative stress.”

Also commenting on the results, B. Hadley Wilson, MD, executive vice chair of the Sanger Heart & Vascular Institute/Atrium Health, clinical professor of medicine at the University of North Carolina at Chapel Hill, and vice president of the American College of Cardiology, called ALL-HEART “an important and interesting study.”

“For years, cardiologists and others have been interested in allopurinol as an anti-inflammatory, xanthine oxidase inhibitor ... to prevent coronary ischemic events,” he said in an interview.

But this was a well-designed, well-conducted study, and “unfortunately there was no improvement in the primary outcome, no reduction in major cardiovascular events like myocardial infarction or stroke or cardiovascular death,” Dr. Wilson said. “So, it’s a bit of a disappointment that it’s not there as an important medication to help us with these patients with ischemic heart disease, but it’s also an important question answered — that we need to look at treatments for ischemic heart disease other than allopurinol.”

The trial was supported by the National Institute for Health and Care Research Health Technology Assessment Program in the United Kingdom. Dr. Mackenzie reported research contracts to her institution from NIHR HTA for this work, and other disclosures related to other work. Dr. Cho and Dr. Wilson reported no relevant disclosures.

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

Allopurinol, a drug commonly used to treat gout, provided no benefit in terms of reducing cardiovascular (CV) events in patients with ischemic heart disease, new randomized trial results show.

Treatment of these patients without gout with 600 mg of allopurinol daily had no effect on composite primary endpoint outcomes, including nonfatal MI, nonfatal stroke, or CV death.

“ALL-HEART is the first large, prospective, randomized trial of the effect of allopurinol on major cardiovascular outcomes in patients with ischemic heart disease and provides robust evidence on the role of allopurinol in these patients,” principal investigator Isla Shelagh Mackenzie, MBChB (Honors), PhD, University of Dundee (Scotland), concluded at a press conference.

Their results suggest allopurinol should not be recommended for secondary prevention of events in this group, Dr. Mackenzie said. Although it remains an important treatment for gout, she added, “other avenues for treatment of ischemic heart disease should be explored in future.”

Results of the ALL-HEART (Allopurinol and Cardiovascular Outcomes in Ischemic Heart Disease) trial were presented at the annual congress of the European Society of Cardiology.
 

Gout treatment

Allopurinol is a xanthine oxidase inhibitor and acts by reducing serum uric acid levels and oxidative stress. Treatment is generally well tolerated, Dr. Mackenzie noted in her presentation, but some patients develop a rash, which can in some cases be serious or even fatal, progressing to Stevens-Johnson syndrome or toxic epidermal necrolysis, “particularly in certain ethnicities.” If rash develops, the advice is to stop treatment immediately.

“The importance of serum uric acid levels in cardiovascular disease is controversial, and there have been different reports over the years of how important they may be,” Dr. Mackenzie explained.

Observational studies have shown variable results, whereas intervention trials, most with fewer than 100 participants, have suggested potential improvements in factors such as blood pressure, endothelial function, left ventricular hypertrophy, or carotid intima-media thickness. Some have reported benefits in acute coronary syndrome and coronary artery bypass grafting, but others have not, she said. A previous study by their own group suggested an improvement in chest pain and exercise time in patients with chronic stable angina and documented coronary artery disease (CAD).

“So, until now, there have been no large prospective randomized trials of the effects of allopurinol on major cardiovascular outcomes in patients with ischemic heart disease,” Dr. Mackenzie said, and this was the aim of ALL-HEART.

ALL-HEART was a prospective, randomized, open-label, blinded-endpoint, multicenter trial. Patients with ischemia heart disease but no history of gout were recruited from 424 general practices across the United Kingdom, starting in February 2014 and with follow-up ending in September 2021. Participants were randomly assigned 1:1 to receive 600 mg of allopurinol daily or usual care.

“It was a decentralized trial, so the follow-up was largely remote after the first 6 weeks, and that included using record linkage data collected from centralized NHS [National Health Service] databases for hospitalizations and deaths in Scotland and England,” she said. The average follow-up was 4.8 years.

During that time, 258 (9.0%) participants in the allopurinol group and 76 (2.6%) in usual care withdrew from follow-up. By the end of the trial, 57.4% of patients in the allopurinol arm withdrew from randomized treatment.

Mean serum uric acid levels dropped from 0.34 mmol/L at baseline to 0.18 mmol/L at 6 weeks of treatment, “so we can see that the treatment was effective at lowering uric acid,” she noted.

In total, there were 5,721 patients in the final intention-to-treat analysis, and 639 patients had a first primary event.

For the primary outcome of nonfatal MI, nonfatal stroke, and cardiovascular death, there was no difference between the groups, the researchers reported, with a hazard ratio of 1.04 (95% confidence interval, 0.89-1.21; P = .65). Similarly, in secondary analyses, there were no differences in any of the component endpoints making up the primary outcome (nonfatal MI: HR, 0.97; 95% CI, 0.78-1.21; P = .81; nonfatal stroke: HR, 1.20; 95% CI, 0.89-1.60; P = .23; cardiovascular death: HR, 1.10; 95% CI, 0.85-1.43; P = .48), or in all-cause mortality (HR, 1.02; 95% CI, 0.87-1.20; P = .77), between the two groups, Dr. Mackenzie noted, “so a definitively neutral trial all round.”

In addition, no differences were seen in prespecified subgroups, including age, sex, estimated glomerular filtration rate, or diabetes, MI, heart failure, peripheral arterial disease, stroke, and stroke or transient ischemic attack at baseline.

There were also no significant effects on quality of life outcomes. Cost-effectiveness analyses are ongoing, although no differences are expected there, Dr. Mackenzie noted.

In terms of safety, incident cancers and all-cause mortality did not differ between groups. Serious adverse events were also similar between groups, Dr. Mackenzie said, “and there were no fatal treatment-related SAEs [serious adverse events] in the study.”

Another negative antioxidant trial

Invited discussant for the presentation, Leslie Cho, MD, of the Cleveland Clinic said that ALL-HEART, while an excellent trial with a pragmatic design, constitutes yet another negative antioxidant trial.

She pointed to three problems with this study and antioxidant trials in general. “First, the problem is with the antioxidant,” a xanthine oxidase inhibitor. “Xanthine oxidase is not a major trigger of oxidative stress. In a field of major players,” including nitric oxide, uncoupled endothelial nitric oxide synthase, and mitochondria myeloperoxidase, Dr. Cho said, “xanthine oxidase is a minor player.”

“Moreover, 57% of the patients stopped taking allopurinol, and rightfully so,” she said. Patients were receiving optimal medical therapies, many of which are also antioxidants, including statins, ACE inhibitors, angiotensin receptor blockers, and beta-blockers.

Second, the patient population was older, with an average age of 72 years. “This makes the ALL-HEART study a chronic angina study, chronic CAD study, one of the oldest modern day CAD trials. If you look at LoDoCo or ISCHEMIA trials, the average age is 63.” Patients also had established disease, many with previous revascularization.

The final issue seen with this trial, and all antioxidant trials, is that patient selection is not based on oxidative stress or antioxidant level. “The antioxidant trials have been disappointing at best. There is clear and convincing evidence that oxidative stress is involved in the pathogenesis of atherosclerosis, and yet study after study of antioxidant trials have been negative,” she said.

“Currently, there is no reliable measurement of global level of oxidative stress,” Dr. Cho noted. “Moreover, dose response was not tested, and if we cannot test the baseline antioxidant stress level of patients, we also cannot measure the effect of treatment on the global oxidative stress.”

So, “is there no hope for antioxidant trials?” she asked. Three factors will be required for future success, she said. “No. 1, selecting the right patient at the right time. No. 2, a reliable biomarker to measure oxidative stress to guide who should get therapy, and if the therapy is working. And lastly, targeted therapies that work on major triggers of oxidative stress.”

Also commenting on the results, B. Hadley Wilson, MD, executive vice chair of the Sanger Heart & Vascular Institute/Atrium Health, clinical professor of medicine at the University of North Carolina at Chapel Hill, and vice president of the American College of Cardiology, called ALL-HEART “an important and interesting study.”

“For years, cardiologists and others have been interested in allopurinol as an anti-inflammatory, xanthine oxidase inhibitor ... to prevent coronary ischemic events,” he said in an interview.

But this was a well-designed, well-conducted study, and “unfortunately there was no improvement in the primary outcome, no reduction in major cardiovascular events like myocardial infarction or stroke or cardiovascular death,” Dr. Wilson said. “So, it’s a bit of a disappointment that it’s not there as an important medication to help us with these patients with ischemic heart disease, but it’s also an important question answered — that we need to look at treatments for ischemic heart disease other than allopurinol.”

The trial was supported by the National Institute for Health and Care Research Health Technology Assessment Program in the United Kingdom. Dr. Mackenzie reported research contracts to her institution from NIHR HTA for this work, and other disclosures related to other work. Dr. Cho and Dr. Wilson reported no relevant disclosures.

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

BARCELONA – Fewer than half the adults in Denmark with type 2 diabetes in 2015 had a recent assessment for albuminuria, and those who underwent testing and had albuminuria had a greater than 50% increased rate of incident heart failure, MI, stroke, or all-cause death during 4-year follow-up, in a study of more than 74,000 Danish residents.

Even those in this study with type 2 diabetes but without albuminuria had a 19% rate of these adverse outcomes, highlighting the “substantial” cardiovascular disease risk faced by people with type 2 diabetes even without a clear indication of nephropathy, Saaima Parveen, MD, a cardiology researcher at Herlev and Gentofte University Hospital in Copenhagen, said at the annual congress of the European Society of Cardiology.

MDedge News/Mitchel L. Zoler

This high rate of heart failure, MI, stroke, or death even in the absence of what is conventionally defined as albuminuria – a urinary albumin-to-creatinine ratio (UACR) of at least 30 mg/g – suggests that this threshold for albuminuria may be too high, commented Luis M. Ruilope, MD, professor of public health and preventive medicine at Autonoma University, Madrid, who was not involved with the Danish study.

The study reported by Dr. Parveen “is very important because it shows that the risk of events is high not only in people with diabetes with albuminuria, but also in those without albuminuria,” Dr. Ruilope said in an interview.

The profile of albuminuria as a risk marker for people with type 2 diabetes spiked following the 2021 U.S. approval of finerenone (Kerendia) as an agent specifically targeted to adults with type 2 diabetes and albuminuria. (Finerenone gained marketing approval by in Europe in February 2022 under the same brand name.)
 

A lower threshold for albuminuria?

“Even patients with a UACR of 10-29 mg/g have risk and should be considered for finerenone treatment, said Dr. Ruilope. “People with type 2 diabetes with a UACR of 10-29 mg/g could explain” the high background risk shown by Dr. Parveen in her reported data. “In people with type 2 diabetes and a UACR of 10-29 mg/g we also see progression of kidney disease, but it’s slower” than in those who meet the current, standard threshold for albuminuria.

MDedge News/Mitchel L. Zoler

Dr. Ruilope was a coinvestigator for both of the finerenone pivotal trials, FIDELIO-DKD and FIGARO-DKD. Although the design of both these studies specified enrollment of people with type 2 diabetes and a UACR of at least 30 mg/g, a few hundred of the total combined enrollment of more than 13,000 patients had UACR values below this level, and analysis of this subgroup could provide some important insights into the value of finerenone for people with “high normal” albuminuria, he said.

The study led by Dr. Parveen used data routinely collected in Danish national records and focused on all Danish adults diagnosed with type 2 diabetes as of Jan. 1, 2015, who also had information in their records for a UACR and an estimated glomerular filtration rate (eGFR) within the preceding year.

The records showed that only 47% of these people had a UACR value during this time frame, and that 57% had a recent measure of their eGFR, despite prevailing recommendations for routine and regular measurements of these parameters for all people with type 2 diabetes.

Dr. Parveen hypothesized that UACR measurement may lag for several reasons, such as reliance by primary care physicians on urine dipstick assessments, which preclude calculation of a UACR, poor adherence to regular medical assessment by people in low socioeconomic groups, and medical examination done outside of morning time periods, which is the best time of day for assessing UACR.

More albuminuria measurement needed in primary care

“Measurement of albuminuria in people with type 2 diabetes is improving in Europe, but is not yet at the level that’s needed,” commented Dr. Ruilope. “We are pushing to have it done more often in primary care practices,” he said.

Among the 74,014 people with type 2 diabetes who had the measurement records that allowed for their inclusion in the study, 40% had albuminuria and 60% did not.

During 4 years of follow-up, the incidence of heart failure, MI, stroke, or all-cause death was 28.6% in those with albuminuria and 18.7% among those without albuminuria, reported Dr. Parveen.

The rates for each event type in those with albuminuria were 7.0% for heart failure, 4.4% for MI, 7.6% for stroke, and 16.6% for all-cause death (each patient could tally more than one type of event). Among those without albuminuria, the rates were 4.0%, 3.2%, 5.5%, and 9.3%, respectively.

The study received no commercial funding. Dr. Parveen and Dr. Ruilope had no disclosures.

BARCELONA – Fewer than half the adults in Denmark with type 2 diabetes in 2015 had a recent assessment for albuminuria, and those who underwent testing and had albuminuria had a greater than 50% increased rate of incident heart failure, MI, stroke, or all-cause death during 4-year follow-up, in a study of more than 74,000 Danish residents.

Even those in this study with type 2 diabetes but without albuminuria had a 19% rate of these adverse outcomes, highlighting the “substantial” cardiovascular disease risk faced by people with type 2 diabetes even without a clear indication of nephropathy, Saaima Parveen, MD, a cardiology researcher at Herlev and Gentofte University Hospital in Copenhagen, said at the annual congress of the European Society of Cardiology.

MDedge News/Mitchel L. Zoler

This high rate of heart failure, MI, stroke, or death even in the absence of what is conventionally defined as albuminuria – a urinary albumin-to-creatinine ratio (UACR) of at least 30 mg/g – suggests that this threshold for albuminuria may be too high, commented Luis M. Ruilope, MD, professor of public health and preventive medicine at Autonoma University, Madrid, who was not involved with the Danish study.

The study reported by Dr. Parveen “is very important because it shows that the risk of events is high not only in people with diabetes with albuminuria, but also in those without albuminuria,” Dr. Ruilope said in an interview.

The profile of albuminuria as a risk marker for people with type 2 diabetes spiked following the 2021 U.S. approval of finerenone (Kerendia) as an agent specifically targeted to adults with type 2 diabetes and albuminuria. (Finerenone gained marketing approval by in Europe in February 2022 under the same brand name.)
 

A lower threshold for albuminuria?

“Even patients with a UACR of 10-29 mg/g have risk and should be considered for finerenone treatment, said Dr. Ruilope. “People with type 2 diabetes with a UACR of 10-29 mg/g could explain” the high background risk shown by Dr. Parveen in her reported data. “In people with type 2 diabetes and a UACR of 10-29 mg/g we also see progression of kidney disease, but it’s slower” than in those who meet the current, standard threshold for albuminuria.

MDedge News/Mitchel L. Zoler

Dr. Ruilope was a coinvestigator for both of the finerenone pivotal trials, FIDELIO-DKD and FIGARO-DKD. Although the design of both these studies specified enrollment of people with type 2 diabetes and a UACR of at least 30 mg/g, a few hundred of the total combined enrollment of more than 13,000 patients had UACR values below this level, and analysis of this subgroup could provide some important insights into the value of finerenone for people with “high normal” albuminuria, he said.

The study led by Dr. Parveen used data routinely collected in Danish national records and focused on all Danish adults diagnosed with type 2 diabetes as of Jan. 1, 2015, who also had information in their records for a UACR and an estimated glomerular filtration rate (eGFR) within the preceding year.

The records showed that only 47% of these people had a UACR value during this time frame, and that 57% had a recent measure of their eGFR, despite prevailing recommendations for routine and regular measurements of these parameters for all people with type 2 diabetes.

Dr. Parveen hypothesized that UACR measurement may lag for several reasons, such as reliance by primary care physicians on urine dipstick assessments, which preclude calculation of a UACR, poor adherence to regular medical assessment by people in low socioeconomic groups, and medical examination done outside of morning time periods, which is the best time of day for assessing UACR.

More albuminuria measurement needed in primary care

“Measurement of albuminuria in people with type 2 diabetes is improving in Europe, but is not yet at the level that’s needed,” commented Dr. Ruilope. “We are pushing to have it done more often in primary care practices,” he said.

Among the 74,014 people with type 2 diabetes who had the measurement records that allowed for their inclusion in the study, 40% had albuminuria and 60% did not.

During 4 years of follow-up, the incidence of heart failure, MI, stroke, or all-cause death was 28.6% in those with albuminuria and 18.7% among those without albuminuria, reported Dr. Parveen.

The rates for each event type in those with albuminuria were 7.0% for heart failure, 4.4% for MI, 7.6% for stroke, and 16.6% for all-cause death (each patient could tally more than one type of event). Among those without albuminuria, the rates were 4.0%, 3.2%, 5.5%, and 9.3%, respectively.

The study received no commercial funding. Dr. Parveen and Dr. Ruilope had no disclosures.

BARCELONA – Fewer than half the adults in Denmark with type 2 diabetes in 2015 had a recent assessment for albuminuria, and those who underwent testing and had albuminuria had a greater than 50% increased rate of incident heart failure, MI, stroke, or all-cause death during 4-year follow-up, in a study of more than 74,000 Danish residents.

Even those in this study with type 2 diabetes but without albuminuria had a 19% rate of these adverse outcomes, highlighting the “substantial” cardiovascular disease risk faced by people with type 2 diabetes even without a clear indication of nephropathy, Saaima Parveen, MD, a cardiology researcher at Herlev and Gentofte University Hospital in Copenhagen, said at the annual congress of the European Society of Cardiology.

MDedge News/Mitchel L. Zoler

This high rate of heart failure, MI, stroke, or death even in the absence of what is conventionally defined as albuminuria – a urinary albumin-to-creatinine ratio (UACR) of at least 30 mg/g – suggests that this threshold for albuminuria may be too high, commented Luis M. Ruilope, MD, professor of public health and preventive medicine at Autonoma University, Madrid, who was not involved with the Danish study.

The study reported by Dr. Parveen “is very important because it shows that the risk of events is high not only in people with diabetes with albuminuria, but also in those without albuminuria,” Dr. Ruilope said in an interview.

The profile of albuminuria as a risk marker for people with type 2 diabetes spiked following the 2021 U.S. approval of finerenone (Kerendia) as an agent specifically targeted to adults with type 2 diabetes and albuminuria. (Finerenone gained marketing approval by in Europe in February 2022 under the same brand name.)
 

A lower threshold for albuminuria?

“Even patients with a UACR of 10-29 mg/g have risk and should be considered for finerenone treatment, said Dr. Ruilope. “People with type 2 diabetes with a UACR of 10-29 mg/g could explain” the high background risk shown by Dr. Parveen in her reported data. “In people with type 2 diabetes and a UACR of 10-29 mg/g we also see progression of kidney disease, but it’s slower” than in those who meet the current, standard threshold for albuminuria.

MDedge News/Mitchel L. Zoler

Dr. Ruilope was a coinvestigator for both of the finerenone pivotal trials, FIDELIO-DKD and FIGARO-DKD. Although the design of both these studies specified enrollment of people with type 2 diabetes and a UACR of at least 30 mg/g, a few hundred of the total combined enrollment of more than 13,000 patients had UACR values below this level, and analysis of this subgroup could provide some important insights into the value of finerenone for people with “high normal” albuminuria, he said.

The study led by Dr. Parveen used data routinely collected in Danish national records and focused on all Danish adults diagnosed with type 2 diabetes as of Jan. 1, 2015, who also had information in their records for a UACR and an estimated glomerular filtration rate (eGFR) within the preceding year.

The records showed that only 47% of these people had a UACR value during this time frame, and that 57% had a recent measure of their eGFR, despite prevailing recommendations for routine and regular measurements of these parameters for all people with type 2 diabetes.

Dr. Parveen hypothesized that UACR measurement may lag for several reasons, such as reliance by primary care physicians on urine dipstick assessments, which preclude calculation of a UACR, poor adherence to regular medical assessment by people in low socioeconomic groups, and medical examination done outside of morning time periods, which is the best time of day for assessing UACR.

More albuminuria measurement needed in primary care

“Measurement of albuminuria in people with type 2 diabetes is improving in Europe, but is not yet at the level that’s needed,” commented Dr. Ruilope. “We are pushing to have it done more often in primary care practices,” he said.

Among the 74,014 people with type 2 diabetes who had the measurement records that allowed for their inclusion in the study, 40% had albuminuria and 60% did not.

During 4 years of follow-up, the incidence of heart failure, MI, stroke, or all-cause death was 28.6% in those with albuminuria and 18.7% among those without albuminuria, reported Dr. Parveen.

The rates for each event type in those with albuminuria were 7.0% for heart failure, 4.4% for MI, 7.6% for stroke, and 16.6% for all-cause death (each patient could tally more than one type of event). Among those without albuminuria, the rates were 4.0%, 3.2%, 5.5%, and 9.3%, respectively.

The study received no commercial funding. Dr. Parveen and Dr. Ruilope had no disclosures.

Percutaneous coronary intervention (PCI) with optimal medical therapy (OMT) does not prolong survival or improve ventricular function, compared with OMT alone, in patients with severe ischemic cardiomyopathy, according to results from the REVIVED-BCIS2 trial.

The primary composite outcome of all-cause death or heart failure hospitalization occurred in 37.2% of the PCI group and 38% of the OMT group (hazard ratio, 0.99; P = .96) over a median of 3.4 years follow-up. The treatment effect was consistent across all subgroups.

There were no significant differences in left ventricular ejection fraction (LVEF) at 6 and 12 months.

Quality of life scores favored PCI early on, but there was catch-up over time with medical therapy, and this advantage disappeared by 2 years, principal investigator Divaka Perera, MD, King’s College London, reported at the annual congress of the European Society of Cardiology.

“The takeaway is that we should not be offering PCI to patients who have stable, well-medicated left ventricular dysfunction,” Dr. Perera told this news organization. “But we should still consider revascularization in patients presenting with acute coronary syndromes or who have lots of angina, because they were not included in the trial.”

The study, published simultaneously in the New England Journal of Medicine, provides the first randomized evidence on PCI for ischemic cardiomyopathy.

Revascularization guidelines in the United States make no recommendation for PCI, whereas those in Europe recommend coronary artery bypass grafting (CABG) first for patients with multivessel disease (class 1); they have a class 2a, level of evidence C indication for PCI in select patients. U.S. and European heart failure guidelines also support guideline directed therapy and CABG in select patients with ejection fractions of 35% or less.

This guidance is based on consensus opinion and the STICH trial, in which CABG plus OMT failed to provide a mortality benefit over OMT alone at 5 years but improved survival at 10 years in the extension STICHES study.

“Medical therapy for heart failure works, and this trial’s results are another important reminder of that,” said Eric Velazquez, MD, who led STICH and was invited to comment on the findings.

Mortality will only get better with the use of SGLT2 inhibitors, he noted, which were not included in the trial. Utilization of ACE inhibitors/ARBs/ARNIs and beta-blockers was similar to STICH and excellent in REVIVED. “They did do a better job in utilization of ICD and CRTs than the STICH trial, and I think that needs to be explored further about the impact of those changes.”

Nevertheless, ischemic cardiomyopathy patients have “unacceptably high mortality,” with the observed mortality about 20% at 3 years and about 35% at 5 years, said Dr. Velazquez, with Yale University, New Haven, Conn.

In most heart failure trials, HF hospitalization drives the primary composite endpoint, but the opposite was true here and in STICH, he observed. “You had twice the risk of dying during the 3.4 years than you did of being hospitalized for heart failure, and ... that is [an important] distinction we must realize is evident in our ischemic cardiomyopathy patients.”

The findings will likely not lead to a change in the guidelines, he added. “I think we continue as status quo for now and get more data.”

Despite the lack of randomized evidence, he cautioned that PCI is increasingly performed in patients with ischemic cardiomyopathy, with registry data suggesting nearly 60% of patients received the procedure.

Reached for comment, Clyde Yancy, MD, chief of cardiology and vice dean of diversity & inclusion at Northwestern University Feinberg School of Medicine, Chicago, said, “For now, the current guidelines are correct. Best application of guideline-directed medical and device therapy is the gold standard for heart failure, and that includes heart failure due to ischemic etiologies.

Detailed results

Between August 2013 and March 2020, REVIVED-BCIS2 enrolled 700 patients at 40 U.K. centers who had an LVEF of 35% or less, extensive CAD (defined by a British Cardiovascular Intervention Society myocardial Jeopardy Score [BCIS-JS] of at least 6), and viability in at least four myocardial segments amenable to PCI. Patients were evenly randomly assigned to individually adjusted pharmacologic and device therapy for heart failure alone or with PCI.

The average age was about 70, only 12.3% women, 344 patients had 2-vessel CAD, and 281 had 3-vessel CAD. The mean LVEF was 27% and median BCIS-JS score 10.

During follow-up, which reached 8.5 years in some patients due to the long enrollment, 31.7% of patients in the PCI group and 32.6% patients in the OMT group died from any cause and 14.7% and 15.3%, respectively, were admitted for heart failure.

LVEF improved by 1.8% at 6 months and 2% at 12 months in the PCI group and by 3.4% and 1.1%, respectively, in the OMT group. The mean between-group difference was –1.6% at 6 months and 0.9% at 12 months.

With regard to quality of life, the Kansas City Cardiomyopathy Questionnaire overall summary score favored the PCI group by 6.5 points at 6 months and by 4.5 points at 12 months, but by 24 months the between-group difference was 2.6 points (95% confidence interval, –0.7 to 5.8). Scores on the EuroQol Group 5-Dimensions 5-Level Questionnaire followed a similar pattern.

Unplanned revascularization was more common in the OMT group (HR, 0.27; 95% CI, 0.13-0.53). Acute myocardial infarction rates were similar in the two groups (HR, 1.01, 95% CI, 0.64-1.60), with the PCI group having more periprocedural infarcts and slightly fewer spontaneous infarcts.

Possible reasons for the discordant results between STICH and REVIVED are the threefold excess mortality within 30 days of CABG, whereas no such early hit occurred with PCI, lead investigator Dr. Perera said in an interview. Medical therapy has also evolved over time and REVIVED enrolled a more “real-world” population, with a median age close to 70 years versus 59 in STICH.
 

‘Modest’ degree of CAD?

An accompanying editorial, however, points out that despite considerable ventricular dysfunction, about half the patients in REVIVED had only 2-vessel disease and a median of two lesions treated.

“This relatively modest degree of coronary artery disease seems unusual for patients selected to undergo revascularization with the hope of restoring or normalizing ventricular function,” writes Ajay Kirtane, MD, from Columbia University Irving Medical Center, NewYork-Presbyterian Hospital.

He said more details are needed on completeness of the revascularization, severity of stenosis, physiologic assessment of the lesion and, “most importantly, the correlation of stenosis with previous ischemic or viability testing.”

Asked about the editorial, Dr. Perera agreed that information on the type of revascularization and myocardial viability are important and said they hope to share analyses of the only recently unblinded data at the American College of Cardiology meeting next spring. Importantly, about 71% of viability testing was done by cardiac MR and the rest largely by dobutamine stress echocardiogram.

He disagreed, however, that participants had relatively modest CAD based on the 2- or 3-vessel classification and said the median score on the more granular BCIS-JS was 10, with maximum 12 indicating the entire myocardium is supplied by diseased vessels.

The trial also included almost 100 patients with left main disease, a group not included in previous medical therapy trials, including STICH and ISCHEMIA, Dr. Perera noted. “So, I think it was pretty, pretty severe coronary disease but a cohort that was better treated medically.”

George Dangas, MD, PhD, a professor of medicine at Icahn School of Medicine at Mount Sinai, New York, said the study provides valuable information but also expressed concerns that the chronic heart failure in the trial was much more advanced than the CAD.

Copyright American Heart Association copyright American Heart Association copyright American Heart Association

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

Percutaneous coronary intervention (PCI) with optimal medical therapy (OMT) does not prolong survival or improve ventricular function, compared with OMT alone, in patients with severe ischemic cardiomyopathy, according to results from the REVIVED-BCIS2 trial.

The primary composite outcome of all-cause death or heart failure hospitalization occurred in 37.2% of the PCI group and 38% of the OMT group (hazard ratio, 0.99; P = .96) over a median of 3.4 years follow-up. The treatment effect was consistent across all subgroups.

There were no significant differences in left ventricular ejection fraction (LVEF) at 6 and 12 months.

Quality of life scores favored PCI early on, but there was catch-up over time with medical therapy, and this advantage disappeared by 2 years, principal investigator Divaka Perera, MD, King’s College London, reported at the annual congress of the European Society of Cardiology.

“The takeaway is that we should not be offering PCI to patients who have stable, well-medicated left ventricular dysfunction,” Dr. Perera told this news organization. “But we should still consider revascularization in patients presenting with acute coronary syndromes or who have lots of angina, because they were not included in the trial.”

The study, published simultaneously in the New England Journal of Medicine, provides the first randomized evidence on PCI for ischemic cardiomyopathy.

Revascularization guidelines in the United States make no recommendation for PCI, whereas those in Europe recommend coronary artery bypass grafting (CABG) first for patients with multivessel disease (class 1); they have a class 2a, level of evidence C indication for PCI in select patients. U.S. and European heart failure guidelines also support guideline directed therapy and CABG in select patients with ejection fractions of 35% or less.

This guidance is based on consensus opinion and the STICH trial, in which CABG plus OMT failed to provide a mortality benefit over OMT alone at 5 years but improved survival at 10 years in the extension STICHES study.

“Medical therapy for heart failure works, and this trial’s results are another important reminder of that,” said Eric Velazquez, MD, who led STICH and was invited to comment on the findings.

Mortality will only get better with the use of SGLT2 inhibitors, he noted, which were not included in the trial. Utilization of ACE inhibitors/ARBs/ARNIs and beta-blockers was similar to STICH and excellent in REVIVED. “They did do a better job in utilization of ICD and CRTs than the STICH trial, and I think that needs to be explored further about the impact of those changes.”

Nevertheless, ischemic cardiomyopathy patients have “unacceptably high mortality,” with the observed mortality about 20% at 3 years and about 35% at 5 years, said Dr. Velazquez, with Yale University, New Haven, Conn.

In most heart failure trials, HF hospitalization drives the primary composite endpoint, but the opposite was true here and in STICH, he observed. “You had twice the risk of dying during the 3.4 years than you did of being hospitalized for heart failure, and ... that is [an important] distinction we must realize is evident in our ischemic cardiomyopathy patients.”

The findings will likely not lead to a change in the guidelines, he added. “I think we continue as status quo for now and get more data.”

Despite the lack of randomized evidence, he cautioned that PCI is increasingly performed in patients with ischemic cardiomyopathy, with registry data suggesting nearly 60% of patients received the procedure.

Reached for comment, Clyde Yancy, MD, chief of cardiology and vice dean of diversity & inclusion at Northwestern University Feinberg School of Medicine, Chicago, said, “For now, the current guidelines are correct. Best application of guideline-directed medical and device therapy is the gold standard for heart failure, and that includes heart failure due to ischemic etiologies.

Detailed results

Between August 2013 and March 2020, REVIVED-BCIS2 enrolled 700 patients at 40 U.K. centers who had an LVEF of 35% or less, extensive CAD (defined by a British Cardiovascular Intervention Society myocardial Jeopardy Score [BCIS-JS] of at least 6), and viability in at least four myocardial segments amenable to PCI. Patients were evenly randomly assigned to individually adjusted pharmacologic and device therapy for heart failure alone or with PCI.

The average age was about 70, only 12.3% women, 344 patients had 2-vessel CAD, and 281 had 3-vessel CAD. The mean LVEF was 27% and median BCIS-JS score 10.

During follow-up, which reached 8.5 years in some patients due to the long enrollment, 31.7% of patients in the PCI group and 32.6% patients in the OMT group died from any cause and 14.7% and 15.3%, respectively, were admitted for heart failure.

LVEF improved by 1.8% at 6 months and 2% at 12 months in the PCI group and by 3.4% and 1.1%, respectively, in the OMT group. The mean between-group difference was –1.6% at 6 months and 0.9% at 12 months.

With regard to quality of life, the Kansas City Cardiomyopathy Questionnaire overall summary score favored the PCI group by 6.5 points at 6 months and by 4.5 points at 12 months, but by 24 months the between-group difference was 2.6 points (95% confidence interval, –0.7 to 5.8). Scores on the EuroQol Group 5-Dimensions 5-Level Questionnaire followed a similar pattern.

Unplanned revascularization was more common in the OMT group (HR, 0.27; 95% CI, 0.13-0.53). Acute myocardial infarction rates were similar in the two groups (HR, 1.01, 95% CI, 0.64-1.60), with the PCI group having more periprocedural infarcts and slightly fewer spontaneous infarcts.

Possible reasons for the discordant results between STICH and REVIVED are the threefold excess mortality within 30 days of CABG, whereas no such early hit occurred with PCI, lead investigator Dr. Perera said in an interview. Medical therapy has also evolved over time and REVIVED enrolled a more “real-world” population, with a median age close to 70 years versus 59 in STICH.
 

‘Modest’ degree of CAD?

An accompanying editorial, however, points out that despite considerable ventricular dysfunction, about half the patients in REVIVED had only 2-vessel disease and a median of two lesions treated.

“This relatively modest degree of coronary artery disease seems unusual for patients selected to undergo revascularization with the hope of restoring or normalizing ventricular function,” writes Ajay Kirtane, MD, from Columbia University Irving Medical Center, NewYork-Presbyterian Hospital.

He said more details are needed on completeness of the revascularization, severity of stenosis, physiologic assessment of the lesion and, “most importantly, the correlation of stenosis with previous ischemic or viability testing.”

Asked about the editorial, Dr. Perera agreed that information on the type of revascularization and myocardial viability are important and said they hope to share analyses of the only recently unblinded data at the American College of Cardiology meeting next spring. Importantly, about 71% of viability testing was done by cardiac MR and the rest largely by dobutamine stress echocardiogram.

He disagreed, however, that participants had relatively modest CAD based on the 2- or 3-vessel classification and said the median score on the more granular BCIS-JS was 10, with maximum 12 indicating the entire myocardium is supplied by diseased vessels.

The trial also included almost 100 patients with left main disease, a group not included in previous medical therapy trials, including STICH and ISCHEMIA, Dr. Perera noted. “So, I think it was pretty, pretty severe coronary disease but a cohort that was better treated medically.”

George Dangas, MD, PhD, a professor of medicine at Icahn School of Medicine at Mount Sinai, New York, said the study provides valuable information but also expressed concerns that the chronic heart failure in the trial was much more advanced than the CAD.

Copyright American Heart Association copyright American Heart Association copyright American Heart Association

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

Percutaneous coronary intervention (PCI) with optimal medical therapy (OMT) does not prolong survival or improve ventricular function, compared with OMT alone, in patients with severe ischemic cardiomyopathy, according to results from the REVIVED-BCIS2 trial.

The primary composite outcome of all-cause death or heart failure hospitalization occurred in 37.2% of the PCI group and 38% of the OMT group (hazard ratio, 0.99; P = .96) over a median of 3.4 years follow-up. The treatment effect was consistent across all subgroups.

There were no significant differences in left ventricular ejection fraction (LVEF) at 6 and 12 months.

Quality of life scores favored PCI early on, but there was catch-up over time with medical therapy, and this advantage disappeared by 2 years, principal investigator Divaka Perera, MD, King’s College London, reported at the annual congress of the European Society of Cardiology.

“The takeaway is that we should not be offering PCI to patients who have stable, well-medicated left ventricular dysfunction,” Dr. Perera told this news organization. “But we should still consider revascularization in patients presenting with acute coronary syndromes or who have lots of angina, because they were not included in the trial.”

The study, published simultaneously in the New England Journal of Medicine, provides the first randomized evidence on PCI for ischemic cardiomyopathy.

Revascularization guidelines in the United States make no recommendation for PCI, whereas those in Europe recommend coronary artery bypass grafting (CABG) first for patients with multivessel disease (class 1); they have a class 2a, level of evidence C indication for PCI in select patients. U.S. and European heart failure guidelines also support guideline directed therapy and CABG in select patients with ejection fractions of 35% or less.

This guidance is based on consensus opinion and the STICH trial, in which CABG plus OMT failed to provide a mortality benefit over OMT alone at 5 years but improved survival at 10 years in the extension STICHES study.

“Medical therapy for heart failure works, and this trial’s results are another important reminder of that,” said Eric Velazquez, MD, who led STICH and was invited to comment on the findings.

Mortality will only get better with the use of SGLT2 inhibitors, he noted, which were not included in the trial. Utilization of ACE inhibitors/ARBs/ARNIs and beta-blockers was similar to STICH and excellent in REVIVED. “They did do a better job in utilization of ICD and CRTs than the STICH trial, and I think that needs to be explored further about the impact of those changes.”

Nevertheless, ischemic cardiomyopathy patients have “unacceptably high mortality,” with the observed mortality about 20% at 3 years and about 35% at 5 years, said Dr. Velazquez, with Yale University, New Haven, Conn.

In most heart failure trials, HF hospitalization drives the primary composite endpoint, but the opposite was true here and in STICH, he observed. “You had twice the risk of dying during the 3.4 years than you did of being hospitalized for heart failure, and ... that is [an important] distinction we must realize is evident in our ischemic cardiomyopathy patients.”

The findings will likely not lead to a change in the guidelines, he added. “I think we continue as status quo for now and get more data.”

Despite the lack of randomized evidence, he cautioned that PCI is increasingly performed in patients with ischemic cardiomyopathy, with registry data suggesting nearly 60% of patients received the procedure.

Reached for comment, Clyde Yancy, MD, chief of cardiology and vice dean of diversity & inclusion at Northwestern University Feinberg School of Medicine, Chicago, said, “For now, the current guidelines are correct. Best application of guideline-directed medical and device therapy is the gold standard for heart failure, and that includes heart failure due to ischemic etiologies.

Detailed results

Between August 2013 and March 2020, REVIVED-BCIS2 enrolled 700 patients at 40 U.K. centers who had an LVEF of 35% or less, extensive CAD (defined by a British Cardiovascular Intervention Society myocardial Jeopardy Score [BCIS-JS] of at least 6), and viability in at least four myocardial segments amenable to PCI. Patients were evenly randomly assigned to individually adjusted pharmacologic and device therapy for heart failure alone or with PCI.

The average age was about 70, only 12.3% women, 344 patients had 2-vessel CAD, and 281 had 3-vessel CAD. The mean LVEF was 27% and median BCIS-JS score 10.

During follow-up, which reached 8.5 years in some patients due to the long enrollment, 31.7% of patients in the PCI group and 32.6% patients in the OMT group died from any cause and 14.7% and 15.3%, respectively, were admitted for heart failure.

LVEF improved by 1.8% at 6 months and 2% at 12 months in the PCI group and by 3.4% and 1.1%, respectively, in the OMT group. The mean between-group difference was –1.6% at 6 months and 0.9% at 12 months.

With regard to quality of life, the Kansas City Cardiomyopathy Questionnaire overall summary score favored the PCI group by 6.5 points at 6 months and by 4.5 points at 12 months, but by 24 months the between-group difference was 2.6 points (95% confidence interval, –0.7 to 5.8). Scores on the EuroQol Group 5-Dimensions 5-Level Questionnaire followed a similar pattern.

Unplanned revascularization was more common in the OMT group (HR, 0.27; 95% CI, 0.13-0.53). Acute myocardial infarction rates were similar in the two groups (HR, 1.01, 95% CI, 0.64-1.60), with the PCI group having more periprocedural infarcts and slightly fewer spontaneous infarcts.

Possible reasons for the discordant results between STICH and REVIVED are the threefold excess mortality within 30 days of CABG, whereas no such early hit occurred with PCI, lead investigator Dr. Perera said in an interview. Medical therapy has also evolved over time and REVIVED enrolled a more “real-world” population, with a median age close to 70 years versus 59 in STICH.
 

‘Modest’ degree of CAD?

An accompanying editorial, however, points out that despite considerable ventricular dysfunction, about half the patients in REVIVED had only 2-vessel disease and a median of two lesions treated.

“This relatively modest degree of coronary artery disease seems unusual for patients selected to undergo revascularization with the hope of restoring or normalizing ventricular function,” writes Ajay Kirtane, MD, from Columbia University Irving Medical Center, NewYork-Presbyterian Hospital.

He said more details are needed on completeness of the revascularization, severity of stenosis, physiologic assessment of the lesion and, “most importantly, the correlation of stenosis with previous ischemic or viability testing.”

Asked about the editorial, Dr. Perera agreed that information on the type of revascularization and myocardial viability are important and said they hope to share analyses of the only recently unblinded data at the American College of Cardiology meeting next spring. Importantly, about 71% of viability testing was done by cardiac MR and the rest largely by dobutamine stress echocardiogram.

He disagreed, however, that participants had relatively modest CAD based on the 2- or 3-vessel classification and said the median score on the more granular BCIS-JS was 10, with maximum 12 indicating the entire myocardium is supplied by diseased vessels.

The trial also included almost 100 patients with left main disease, a group not included in previous medical therapy trials, including STICH and ISCHEMIA, Dr. Perera noted. “So, I think it was pretty, pretty severe coronary disease but a cohort that was better treated medically.”

George Dangas, MD, PhD, a professor of medicine at Icahn School of Medicine at Mount Sinai, New York, said the study provides valuable information but also expressed concerns that the chronic heart failure in the trial was much more advanced than the CAD.

Copyright American Heart Association copyright American Heart Association copyright American Heart Association

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

Video-based artificial intelligence provided a more accurate and consistent reading of echocardiograms than did experienced sonographers in a blinded trial, a result suggesting that this technology is no longer experimental.

“We are planning to deploy this at Cedars, so this is essentially ready for use,” said David Ouyang, MD, who is affiliated with the Cedars-Sinai Medical School and is an instructor of cardiology at the University of California, both in Los Angeles.

The primary outcome of this trial, called EchoNet-RCT, was the proportion of cases in which cardiologists changed the left ventricular ejection fraction (LVEF) reading by more than 5%. They were blinded to the origin of the reports.

This endpoint was reached in 27.2% of reports generated by sonographers but just 16.8% of reports generated by AI, a mean difference of 10.5% (P < .001).

The AI tested in the trial is called EchoNet-Dynamic. It employs a video-based deep learning algorithm that permits beat-by-beat evaluation of ejection fraction. The specifics of this system were described in a study published 2 years ago in Nature. In that evaluation of the model training set, the absolute error rate was 6% in the more than 10,000 annotated echocardiogram videos.
 

Echo-Net is first blinded AI echo trial

Although AI is already being employed for image evaluation in many areas of medicine, the EchoNet-RCT study “is the first blinded trial of AI in cardiology,” Dr. Ouyang said. Indeed, he noted that no prior study has even been randomized.

After a run-in period, 3,495 echocardiograms were randomizly assigned to be read by AI or by a sonographer. The reports generated by these two approaches were then evaluated by the blinded cardiologists. The sonographers and the cardiologists participating in this study had a mean of 14.1 years and 12.7 years of experience, respectively.

Each reading by both sonographers and AI was based on a single beat, but this presumably was a relative handicap for the potential advantage of AI technology, which is capable of evaluating ejection fraction across multiple cardiac cycles. The evaluation of multiple cycles has been shown previously to improve accuracy, but it is tedious and not commonly performed in routine practice, according to Dr. Ouyang.
 

AI favored for all major endpoints

The superiority of AI was calculated after noninferiority was demonstrated. AI also showed superiority for the secondary safety outcome which involved a test-retest evaluation. Historical AI and sonographer echocardiogram reports were again blindly assessed. Although the retest variability was lower for both (6.29% vs. 7.23%), the difference was still highly significant in favor of AI (P < .001)

The relative efficiency of AI to sonographer assessment was also tested and showed meaningful reductions in work time. While AI eliminates the labor of the sonographer completely (0 vs. a median of 119 seconds, P < .001), it was also associated with a highly significant reduction in median cardiologist time spent on echo evaluation (54 vs. 64 seconds, P < .001).

Assuming that AI is integrated into the routine workflow of a busy center, AI “could be very effective at not only improving the quality of echo reading output but also increasing efficiencies in time and effort spent by sonographers and cardiologists by simplifying otherwise tedious but important tasks,” Dr. Ouyang said.

The trial enrolled a relatively typical population. The median age was 66 years, 57% were male, and comorbidities such as diabetes and chronic kidney disease were common. When AI was compared with sonographer evaluation in groups stratified by these variables as well as by race, image quality, and location of the evaluation (inpatient vs. outpatient), the advantage of AI was consistent.

Cardiologists cannot detect AI-read echos

Identifying potential limitations of this study, James D. Thomas, MD, professor of medicine, Northwestern University, Chicago, pointed out that it was a single-center trial, and he questioned a potential bias from cardiologists able to guess accurately which of the reports they were evaluating were generated by AI.

Dr. Ouyang acknowledged that this study was limited to patients at UCLA, but he pointed out that the training model was developed at Stanford (Calif.) University, so there were two sets of patients involved in testing the machine learning algorithm. He also noted that it was exceptionally large, providing a robust dataset.

As for the bias, this was evaluated as predefined endpoint.

“We asked the cardiologists to tell us [whether] they knew which reports were generated by AI,” Dr. Ouyang said. In 43% of cases, they reported they were not sure. However, when they did express confidence that the report was generated by AI, they were correct in only 32% of the cases and incorrect in 24%. Dr. Ouyang suggested these numbers argue against a substantial role for a bias affecting the trial results.

Dr. Thomas, who has an interest in the role of AI for cardiology, cautioned that there are “technical, privacy, commercial, maintenance, and regulatory barriers” that must be circumvented before AI is widely incorporated into clinical practice, but he praised this blinded trial for advancing the field. Even accounting for any limitations, he clearly shared Dr. Ouyang’s enthusiasm about the future of AI for EF assessment.

Dr. Ouyang reports financial relationships with EchoIQ, Ultromics, and InVision. Dr. Thomas reports financial relationships with Abbott, GE, egnite, EchoIQ, and Caption Health.

Video-based artificial intelligence provided a more accurate and consistent reading of echocardiograms than did experienced sonographers in a blinded trial, a result suggesting that this technology is no longer experimental.

“We are planning to deploy this at Cedars, so this is essentially ready for use,” said David Ouyang, MD, who is affiliated with the Cedars-Sinai Medical School and is an instructor of cardiology at the University of California, both in Los Angeles.

The primary outcome of this trial, called EchoNet-RCT, was the proportion of cases in which cardiologists changed the left ventricular ejection fraction (LVEF) reading by more than 5%. They were blinded to the origin of the reports.

This endpoint was reached in 27.2% of reports generated by sonographers but just 16.8% of reports generated by AI, a mean difference of 10.5% (P < .001).

The AI tested in the trial is called EchoNet-Dynamic. It employs a video-based deep learning algorithm that permits beat-by-beat evaluation of ejection fraction. The specifics of this system were described in a study published 2 years ago in Nature. In that evaluation of the model training set, the absolute error rate was 6% in the more than 10,000 annotated echocardiogram videos.
 

Echo-Net is first blinded AI echo trial

Although AI is already being employed for image evaluation in many areas of medicine, the EchoNet-RCT study “is the first blinded trial of AI in cardiology,” Dr. Ouyang said. Indeed, he noted that no prior study has even been randomized.

After a run-in period, 3,495 echocardiograms were randomizly assigned to be read by AI or by a sonographer. The reports generated by these two approaches were then evaluated by the blinded cardiologists. The sonographers and the cardiologists participating in this study had a mean of 14.1 years and 12.7 years of experience, respectively.

Each reading by both sonographers and AI was based on a single beat, but this presumably was a relative handicap for the potential advantage of AI technology, which is capable of evaluating ejection fraction across multiple cardiac cycles. The evaluation of multiple cycles has been shown previously to improve accuracy, but it is tedious and not commonly performed in routine practice, according to Dr. Ouyang.
 

AI favored for all major endpoints

The superiority of AI was calculated after noninferiority was demonstrated. AI also showed superiority for the secondary safety outcome which involved a test-retest evaluation. Historical AI and sonographer echocardiogram reports were again blindly assessed. Although the retest variability was lower for both (6.29% vs. 7.23%), the difference was still highly significant in favor of AI (P < .001)

The relative efficiency of AI to sonographer assessment was also tested and showed meaningful reductions in work time. While AI eliminates the labor of the sonographer completely (0 vs. a median of 119 seconds, P < .001), it was also associated with a highly significant reduction in median cardiologist time spent on echo evaluation (54 vs. 64 seconds, P < .001).

Assuming that AI is integrated into the routine workflow of a busy center, AI “could be very effective at not only improving the quality of echo reading output but also increasing efficiencies in time and effort spent by sonographers and cardiologists by simplifying otherwise tedious but important tasks,” Dr. Ouyang said.

The trial enrolled a relatively typical population. The median age was 66 years, 57% were male, and comorbidities such as diabetes and chronic kidney disease were common. When AI was compared with sonographer evaluation in groups stratified by these variables as well as by race, image quality, and location of the evaluation (inpatient vs. outpatient), the advantage of AI was consistent.

Cardiologists cannot detect AI-read echos

Identifying potential limitations of this study, James D. Thomas, MD, professor of medicine, Northwestern University, Chicago, pointed out that it was a single-center trial, and he questioned a potential bias from cardiologists able to guess accurately which of the reports they were evaluating were generated by AI.

Dr. Ouyang acknowledged that this study was limited to patients at UCLA, but he pointed out that the training model was developed at Stanford (Calif.) University, so there were two sets of patients involved in testing the machine learning algorithm. He also noted that it was exceptionally large, providing a robust dataset.

As for the bias, this was evaluated as predefined endpoint.

“We asked the cardiologists to tell us [whether] they knew which reports were generated by AI,” Dr. Ouyang said. In 43% of cases, they reported they were not sure. However, when they did express confidence that the report was generated by AI, they were correct in only 32% of the cases and incorrect in 24%. Dr. Ouyang suggested these numbers argue against a substantial role for a bias affecting the trial results.

Dr. Thomas, who has an interest in the role of AI for cardiology, cautioned that there are “technical, privacy, commercial, maintenance, and regulatory barriers” that must be circumvented before AI is widely incorporated into clinical practice, but he praised this blinded trial for advancing the field. Even accounting for any limitations, he clearly shared Dr. Ouyang’s enthusiasm about the future of AI for EF assessment.

Dr. Ouyang reports financial relationships with EchoIQ, Ultromics, and InVision. Dr. Thomas reports financial relationships with Abbott, GE, egnite, EchoIQ, and Caption Health.

Video-based artificial intelligence provided a more accurate and consistent reading of echocardiograms than did experienced sonographers in a blinded trial, a result suggesting that this technology is no longer experimental.

“We are planning to deploy this at Cedars, so this is essentially ready for use,” said David Ouyang, MD, who is affiliated with the Cedars-Sinai Medical School and is an instructor of cardiology at the University of California, both in Los Angeles.

The primary outcome of this trial, called EchoNet-RCT, was the proportion of cases in which cardiologists changed the left ventricular ejection fraction (LVEF) reading by more than 5%. They were blinded to the origin of the reports.

This endpoint was reached in 27.2% of reports generated by sonographers but just 16.8% of reports generated by AI, a mean difference of 10.5% (P < .001).

The AI tested in the trial is called EchoNet-Dynamic. It employs a video-based deep learning algorithm that permits beat-by-beat evaluation of ejection fraction. The specifics of this system were described in a study published 2 years ago in Nature. In that evaluation of the model training set, the absolute error rate was 6% in the more than 10,000 annotated echocardiogram videos.
 

Echo-Net is first blinded AI echo trial

Although AI is already being employed for image evaluation in many areas of medicine, the EchoNet-RCT study “is the first blinded trial of AI in cardiology,” Dr. Ouyang said. Indeed, he noted that no prior study has even been randomized.

After a run-in period, 3,495 echocardiograms were randomizly assigned to be read by AI or by a sonographer. The reports generated by these two approaches were then evaluated by the blinded cardiologists. The sonographers and the cardiologists participating in this study had a mean of 14.1 years and 12.7 years of experience, respectively.

Each reading by both sonographers and AI was based on a single beat, but this presumably was a relative handicap for the potential advantage of AI technology, which is capable of evaluating ejection fraction across multiple cardiac cycles. The evaluation of multiple cycles has been shown previously to improve accuracy, but it is tedious and not commonly performed in routine practice, according to Dr. Ouyang.
 

AI favored for all major endpoints

The superiority of AI was calculated after noninferiority was demonstrated. AI also showed superiority for the secondary safety outcome which involved a test-retest evaluation. Historical AI and sonographer echocardiogram reports were again blindly assessed. Although the retest variability was lower for both (6.29% vs. 7.23%), the difference was still highly significant in favor of AI (P < .001)

The relative efficiency of AI to sonographer assessment was also tested and showed meaningful reductions in work time. While AI eliminates the labor of the sonographer completely (0 vs. a median of 119 seconds, P < .001), it was also associated with a highly significant reduction in median cardiologist time spent on echo evaluation (54 vs. 64 seconds, P < .001).

Assuming that AI is integrated into the routine workflow of a busy center, AI “could be very effective at not only improving the quality of echo reading output but also increasing efficiencies in time and effort spent by sonographers and cardiologists by simplifying otherwise tedious but important tasks,” Dr. Ouyang said.

The trial enrolled a relatively typical population. The median age was 66 years, 57% were male, and comorbidities such as diabetes and chronic kidney disease were common. When AI was compared with sonographer evaluation in groups stratified by these variables as well as by race, image quality, and location of the evaluation (inpatient vs. outpatient), the advantage of AI was consistent.

Cardiologists cannot detect AI-read echos

Identifying potential limitations of this study, James D. Thomas, MD, professor of medicine, Northwestern University, Chicago, pointed out that it was a single-center trial, and he questioned a potential bias from cardiologists able to guess accurately which of the reports they were evaluating were generated by AI.

Dr. Ouyang acknowledged that this study was limited to patients at UCLA, but he pointed out that the training model was developed at Stanford (Calif.) University, so there were two sets of patients involved in testing the machine learning algorithm. He also noted that it was exceptionally large, providing a robust dataset.

As for the bias, this was evaluated as predefined endpoint.

“We asked the cardiologists to tell us [whether] they knew which reports were generated by AI,” Dr. Ouyang said. In 43% of cases, they reported they were not sure. However, when they did express confidence that the report was generated by AI, they were correct in only 32% of the cases and incorrect in 24%. Dr. Ouyang suggested these numbers argue against a substantial role for a bias affecting the trial results.

Dr. Thomas, who has an interest in the role of AI for cardiology, cautioned that there are “technical, privacy, commercial, maintenance, and regulatory barriers” that must be circumvented before AI is widely incorporated into clinical practice, but he praised this blinded trial for advancing the field. Even accounting for any limitations, he clearly shared Dr. Ouyang’s enthusiasm about the future of AI for EF assessment.

Dr. Ouyang reports financial relationships with EchoIQ, Ultromics, and InVision. Dr. Thomas reports financial relationships with Abbott, GE, egnite, EchoIQ, and Caption Health.

A decades-old drug, added to standard loop diuretics, could potentially help more volume-overloaded patients with acute decompensated heart failure (ADHF) to be discharged from the hospital ‘dry,’ a randomized trial suggests.

Those who received intravenous acetazolamide, compared with placebo, on top of a usual-care IV loop diuretic in the multicenter study were 46% more likely to achieve “successful” decongestion – that is, to leave the hospital without lingering signs of volume overload.

The trial, with more than 500 patients, is the first “to unequivocally show benefit of any drug, namely acetazolamide, on major heart failure outcomes in patients with acute decompensated heart failure,” said Wilfried Mullens, MD, PhD, Hospital Oost-Limburg, Genk, Belgium, at a media briefing during the annual congress of the European Society of Cardiology, Barcelona.

The patients who received acetazolamide “also had a shorter hospital stay, having a major impact on not only quality of life, but also health care expenditures,” said Dr. Mullens, who leads the steering committee of the trial conducted in Belgium. He presented the results of Acetazolamide in Decompensated Heart Failure with Volume Overload (ADVOR) at ESC 2022 and is lead author on its same-day publication in the New England Journal of Medicine.
 

Complementary effects?

Current guidelines on managing volume-overloaded patients with ADHF owe a lot to the 2011 DOSE trial, which provided some of the first randomized-trial evidence in an arena led largely by clinical tradition. The advantages it saw with the high-dose furosemide strategy helped it enter into clinical practice, but even in DOSE, the strategy fell short of achieving full decongestion for many patients.

The ADVOR report describes acetazolamide as a carbonic anhydrase inhibitor that reduces sodium recovery in the proximal tubule, similar to the function of loop diuretics in the loop of Henle. Acting in different segments of the nephron, acetazolamide and loop diuretics like furosemide may potentially have complementary effects that improve diuretic “efficiency.”

The difference in decongestion effect between the acetazolamide and placebo groups grew consistently from baseline to day 3. “There was an increase in treatment effect over consecutive days,” Dr. Mullens said. “This highlights the importance of treating congestion both early and aggressively. You cannot catch up,” he said. “If you don’t treat them aggressively initially, you can never get them dry.”

Of the trial’s 519 patients, 42.2% of those assigned to acetazolamide and 30.5% of those in the control group were judged to have had successful decongestion at 3 days, the primary endpoint. Successful decongestion meant they had no remaining signs of volume overload, such as edema, pleural effusion, or ascites.

Although the trial wasn’t powered for clinical outcomes, the 3-month rates of death from any cause or rehospitalization for heart failure were similar at 29.7% in the acetazolamide group and 27.8% for the control group. All-cause mortality in an exploratory analysis was also statistically comparable at 15.2% and 12%, respectively.
 

Decongestion and clinical outcomes

The study is noteworthy “because it tests a readily available diuretic, acetazolamide, that is not used widely for ADHF,” and showed a benefit at 3 days from adding the drug to a prescribed loop diuretic regimen, Mark H. Drazner, MD, University of Texas Southwestern Medical Center, Dallas, told this news organization.

The benefit didn’t translate into improved clinical outcomes; indeed, mortality at 3 months was numerically higher in the acetazolamide group, observed Dr. Drazner, who is unaffiliated with the study.

Although ADVOR isn’t powered for mortality, he acknowledged, “one would expect the enhanced decongestion would have led to improved outcomes,” or at least a signal of such improvement.

It’s worth noting, Dr. Drazner added, “that the strategy tested was to add acetazolamide up front, on day 1, before loop diuretics were maximized.”

Indeed, the published report says all patients received IV loop diuretics at double the oral maintenance dose, given the first day in a single bolus immediately on randomization. The dose was split into two doses, given at least 6 hours apart, on day 2 and day 3. “The bolus of acetazolamide or matching placebo was administered simultaneously with the first dose of loop diuretics each day,” it states.

Although the protocol called for one loop diuretic dose on day 1, typically in practice patients would be dosed twice or three times each day, Dr. Drazner observed. Once-daily IV diuretic dosing may be less effective than a 2- or 3-times-per-day schedule, he said. As a result, acetazolamide might achieve faster decongestion after it is added to the loop diuretic, a benefit that would not otherwise be available in practice.
 

Messages for practice

Before this trial, Dr. Drazner said, he would usually add the thiazide diuretic metolazone as needed “to augment diuresis beyond maximum loop diuretics.” After ADVOR, “I’d be willing to try acetazolamide in that setting, recognizing I also don’t know the impact of metolazone on outcomes.”

Still, he would restrict either drug to patients who fail on maximal loop diuretics “rather than adding it routinely and up front, before the loop diuretics are maximized.”

More data are needed, Dr. Drazner said, including from a larger clinical-outcomes trial to confirm the strategy’s safety, before “the up-front addition of acetazolamide to submaximal loop diuretics doses” could become part of standard practice in ADHF.

Given the data so far, including those from ADVOR, “treatment with loop diuretics alone is probably sufficient for successful decongestion” among patients likely to respond to the drugs: that is, “those who are younger, those who have less severe or new-onset heart failure, and those who have normal kidney function,” states an editorial accompanying the published report.

“However, for the large group of patients who have some degree of diuretic resistance, or for those who have an inadequate initial response to loop-diuretic therapy, these data suggest the use of acetazolamide as a reasonable adjunct to achieving more rapid decongestion,” writes G. Michael Felker, MD, Duke University School of Medicine, Durham, N.C. Dr. Felker was lead author on the DOSE primary publication.

ADVOR entered volume-overloaded patients with ADHF and elevated natriuretic peptide levels who had been on oral maintenance with at least 40 mg of furosemide, or equivalent doses of other loop diuretics, for at least a month before randomization.

They were assigned to either IV acetazolamide at 500 mg once daily (n = 259) or placebo (n = 260) on top of an IV loop diuretic, at 27 centers in Belgium.

The risk ratio for the primary endpoint, successful decongestion after 3 days, was 1.46 (95% confidence interval, 1.17-1.82, P < .001) for the acetazolamide versus placebo groups.

In exploratory analyses, acetazolamide versus placebo, the RR for successful decongestion among patients who survived to discharge was increased at 1.27 (95% CI, 1.13-1.43). The hazard ratio for death from any cause at 3 months was not significant at 1.28 (95% CI, 0.78-2.05), nor was the HR for heart-failure rehospitalization at 3 months, 1.07 (95% CI, 0.71-1.59).

The role of SGLT2 inhibitors

ADVOR, understandably but maybe problematically, excluded patients taking SGLT2 inhibitors. The drugs have diuretic effects, among other useful properties, and became core therapy for a range of heart failure types after the trial was designed.

“This exclusion presents a conundrum for applying these results in contemporary clinical care,” Dr. Felker writes. For example, “the data supporting the efficacy and safety of SGLT2 inhibitors across the broad spectrum of patients with heart failure are now overwhelming, and most patients who are hospitalized for heart failure have a clear indication for these agents.”

Given that no ADVOR patients were on the drugs, his editorial states, “we can only speculate as to the efficacy of acetazolamide in patients treated with background SGLT2 inhibitors, which could potentially be additive, subadditive, or synergistic.”

The SGLT2 inhibitors will likely “be used in ADHF in the future, based on studies such as EMPULSE. It will be important to know whether SGLT2 inhibitors change the risk-benefit of also giving acetazolamide,” Dr. Drazner said when interviewed.

“I don’t think there’s any safety issue with regards to the combination of SGLT2 inhibitors and acetazolamide,” Dr. Mullens said. Their diuretic effects are likely to be additive, he proposed.

“Although SGLT2 inhibitors and acetazolamide both exert natriuretic and diuretic effects on the proximal tubules, their mode of action and potency differ substantially,” the published report states.

ADVOR is funded by the Belgian Health Care Knowledge Center. Dr. Mullens discloses receiving fees for speaking from Abbott Fund, AstraZeneca, Bayer, Boehringer Ingelheim, Boston Scientific, Medtronic, and Novartis. Disclosures for the other authors are at NEJM.org. Dr. Drazner has reported no relevant financial relationships. Dr. Felker discloses serving as a consultant for AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Cardionomic, Cytokinetics, Novartis, Reprieve, and Sequana.

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

A decades-old drug, added to standard loop diuretics, could potentially help more volume-overloaded patients with acute decompensated heart failure (ADHF) to be discharged from the hospital ‘dry,’ a randomized trial suggests.

Those who received intravenous acetazolamide, compared with placebo, on top of a usual-care IV loop diuretic in the multicenter study were 46% more likely to achieve “successful” decongestion – that is, to leave the hospital without lingering signs of volume overload.

The trial, with more than 500 patients, is the first “to unequivocally show benefit of any drug, namely acetazolamide, on major heart failure outcomes in patients with acute decompensated heart failure,” said Wilfried Mullens, MD, PhD, Hospital Oost-Limburg, Genk, Belgium, at a media briefing during the annual congress of the European Society of Cardiology, Barcelona.

The patients who received acetazolamide “also had a shorter hospital stay, having a major impact on not only quality of life, but also health care expenditures,” said Dr. Mullens, who leads the steering committee of the trial conducted in Belgium. He presented the results of Acetazolamide in Decompensated Heart Failure with Volume Overload (ADVOR) at ESC 2022 and is lead author on its same-day publication in the New England Journal of Medicine.
 

Complementary effects?

Current guidelines on managing volume-overloaded patients with ADHF owe a lot to the 2011 DOSE trial, which provided some of the first randomized-trial evidence in an arena led largely by clinical tradition. The advantages it saw with the high-dose furosemide strategy helped it enter into clinical practice, but even in DOSE, the strategy fell short of achieving full decongestion for many patients.

The ADVOR report describes acetazolamide as a carbonic anhydrase inhibitor that reduces sodium recovery in the proximal tubule, similar to the function of loop diuretics in the loop of Henle. Acting in different segments of the nephron, acetazolamide and loop diuretics like furosemide may potentially have complementary effects that improve diuretic “efficiency.”

The difference in decongestion effect between the acetazolamide and placebo groups grew consistently from baseline to day 3. “There was an increase in treatment effect over consecutive days,” Dr. Mullens said. “This highlights the importance of treating congestion both early and aggressively. You cannot catch up,” he said. “If you don’t treat them aggressively initially, you can never get them dry.”

Of the trial’s 519 patients, 42.2% of those assigned to acetazolamide and 30.5% of those in the control group were judged to have had successful decongestion at 3 days, the primary endpoint. Successful decongestion meant they had no remaining signs of volume overload, such as edema, pleural effusion, or ascites.

Although the trial wasn’t powered for clinical outcomes, the 3-month rates of death from any cause or rehospitalization for heart failure were similar at 29.7% in the acetazolamide group and 27.8% for the control group. All-cause mortality in an exploratory analysis was also statistically comparable at 15.2% and 12%, respectively.
 

Decongestion and clinical outcomes

The study is noteworthy “because it tests a readily available diuretic, acetazolamide, that is not used widely for ADHF,” and showed a benefit at 3 days from adding the drug to a prescribed loop diuretic regimen, Mark H. Drazner, MD, University of Texas Southwestern Medical Center, Dallas, told this news organization.

The benefit didn’t translate into improved clinical outcomes; indeed, mortality at 3 months was numerically higher in the acetazolamide group, observed Dr. Drazner, who is unaffiliated with the study.

Although ADVOR isn’t powered for mortality, he acknowledged, “one would expect the enhanced decongestion would have led to improved outcomes,” or at least a signal of such improvement.

It’s worth noting, Dr. Drazner added, “that the strategy tested was to add acetazolamide up front, on day 1, before loop diuretics were maximized.”

Indeed, the published report says all patients received IV loop diuretics at double the oral maintenance dose, given the first day in a single bolus immediately on randomization. The dose was split into two doses, given at least 6 hours apart, on day 2 and day 3. “The bolus of acetazolamide or matching placebo was administered simultaneously with the first dose of loop diuretics each day,” it states.

Although the protocol called for one loop diuretic dose on day 1, typically in practice patients would be dosed twice or three times each day, Dr. Drazner observed. Once-daily IV diuretic dosing may be less effective than a 2- or 3-times-per-day schedule, he said. As a result, acetazolamide might achieve faster decongestion after it is added to the loop diuretic, a benefit that would not otherwise be available in practice.
 

Messages for practice

Before this trial, Dr. Drazner said, he would usually add the thiazide diuretic metolazone as needed “to augment diuresis beyond maximum loop diuretics.” After ADVOR, “I’d be willing to try acetazolamide in that setting, recognizing I also don’t know the impact of metolazone on outcomes.”

Still, he would restrict either drug to patients who fail on maximal loop diuretics “rather than adding it routinely and up front, before the loop diuretics are maximized.”

More data are needed, Dr. Drazner said, including from a larger clinical-outcomes trial to confirm the strategy’s safety, before “the up-front addition of acetazolamide to submaximal loop diuretics doses” could become part of standard practice in ADHF.

Given the data so far, including those from ADVOR, “treatment with loop diuretics alone is probably sufficient for successful decongestion” among patients likely to respond to the drugs: that is, “those who are younger, those who have less severe or new-onset heart failure, and those who have normal kidney function,” states an editorial accompanying the published report.

“However, for the large group of patients who have some degree of diuretic resistance, or for those who have an inadequate initial response to loop-diuretic therapy, these data suggest the use of acetazolamide as a reasonable adjunct to achieving more rapid decongestion,” writes G. Michael Felker, MD, Duke University School of Medicine, Durham, N.C. Dr. Felker was lead author on the DOSE primary publication.

ADVOR entered volume-overloaded patients with ADHF and elevated natriuretic peptide levels who had been on oral maintenance with at least 40 mg of furosemide, or equivalent doses of other loop diuretics, for at least a month before randomization.

They were assigned to either IV acetazolamide at 500 mg once daily (n = 259) or placebo (n = 260) on top of an IV loop diuretic, at 27 centers in Belgium.

The risk ratio for the primary endpoint, successful decongestion after 3 days, was 1.46 (95% confidence interval, 1.17-1.82, P < .001) for the acetazolamide versus placebo groups.

In exploratory analyses, acetazolamide versus placebo, the RR for successful decongestion among patients who survived to discharge was increased at 1.27 (95% CI, 1.13-1.43). The hazard ratio for death from any cause at 3 months was not significant at 1.28 (95% CI, 0.78-2.05), nor was the HR for heart-failure rehospitalization at 3 months, 1.07 (95% CI, 0.71-1.59).

The role of SGLT2 inhibitors

ADVOR, understandably but maybe problematically, excluded patients taking SGLT2 inhibitors. The drugs have diuretic effects, among other useful properties, and became core therapy for a range of heart failure types after the trial was designed.

“This exclusion presents a conundrum for applying these results in contemporary clinical care,” Dr. Felker writes. For example, “the data supporting the efficacy and safety of SGLT2 inhibitors across the broad spectrum of patients with heart failure are now overwhelming, and most patients who are hospitalized for heart failure have a clear indication for these agents.”

Given that no ADVOR patients were on the drugs, his editorial states, “we can only speculate as to the efficacy of acetazolamide in patients treated with background SGLT2 inhibitors, which could potentially be additive, subadditive, or synergistic.”

The SGLT2 inhibitors will likely “be used in ADHF in the future, based on studies such as EMPULSE. It will be important to know whether SGLT2 inhibitors change the risk-benefit of also giving acetazolamide,” Dr. Drazner said when interviewed.

“I don’t think there’s any safety issue with regards to the combination of SGLT2 inhibitors and acetazolamide,” Dr. Mullens said. Their diuretic effects are likely to be additive, he proposed.

“Although SGLT2 inhibitors and acetazolamide both exert natriuretic and diuretic effects on the proximal tubules, their mode of action and potency differ substantially,” the published report states.

ADVOR is funded by the Belgian Health Care Knowledge Center. Dr. Mullens discloses receiving fees for speaking from Abbott Fund, AstraZeneca, Bayer, Boehringer Ingelheim, Boston Scientific, Medtronic, and Novartis. Disclosures for the other authors are at NEJM.org. Dr. Drazner has reported no relevant financial relationships. Dr. Felker discloses serving as a consultant for AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Cardionomic, Cytokinetics, Novartis, Reprieve, and Sequana.

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

A decades-old drug, added to standard loop diuretics, could potentially help more volume-overloaded patients with acute decompensated heart failure (ADHF) to be discharged from the hospital ‘dry,’ a randomized trial suggests.

Those who received intravenous acetazolamide, compared with placebo, on top of a usual-care IV loop diuretic in the multicenter study were 46% more likely to achieve “successful” decongestion – that is, to leave the hospital without lingering signs of volume overload.

The trial, with more than 500 patients, is the first “to unequivocally show benefit of any drug, namely acetazolamide, on major heart failure outcomes in patients with acute decompensated heart failure,” said Wilfried Mullens, MD, PhD, Hospital Oost-Limburg, Genk, Belgium, at a media briefing during the annual congress of the European Society of Cardiology, Barcelona.

The patients who received acetazolamide “also had a shorter hospital stay, having a major impact on not only quality of life, but also health care expenditures,” said Dr. Mullens, who leads the steering committee of the trial conducted in Belgium. He presented the results of Acetazolamide in Decompensated Heart Failure with Volume Overload (ADVOR) at ESC 2022 and is lead author on its same-day publication in the New England Journal of Medicine.
 

Complementary effects?

Current guidelines on managing volume-overloaded patients with ADHF owe a lot to the 2011 DOSE trial, which provided some of the first randomized-trial evidence in an arena led largely by clinical tradition. The advantages it saw with the high-dose furosemide strategy helped it enter into clinical practice, but even in DOSE, the strategy fell short of achieving full decongestion for many patients.

The ADVOR report describes acetazolamide as a carbonic anhydrase inhibitor that reduces sodium recovery in the proximal tubule, similar to the function of loop diuretics in the loop of Henle. Acting in different segments of the nephron, acetazolamide and loop diuretics like furosemide may potentially have complementary effects that improve diuretic “efficiency.”

The difference in decongestion effect between the acetazolamide and placebo groups grew consistently from baseline to day 3. “There was an increase in treatment effect over consecutive days,” Dr. Mullens said. “This highlights the importance of treating congestion both early and aggressively. You cannot catch up,” he said. “If you don’t treat them aggressively initially, you can never get them dry.”

Of the trial’s 519 patients, 42.2% of those assigned to acetazolamide and 30.5% of those in the control group were judged to have had successful decongestion at 3 days, the primary endpoint. Successful decongestion meant they had no remaining signs of volume overload, such as edema, pleural effusion, or ascites.

Although the trial wasn’t powered for clinical outcomes, the 3-month rates of death from any cause or rehospitalization for heart failure were similar at 29.7% in the acetazolamide group and 27.8% for the control group. All-cause mortality in an exploratory analysis was also statistically comparable at 15.2% and 12%, respectively.
 

Decongestion and clinical outcomes

The study is noteworthy “because it tests a readily available diuretic, acetazolamide, that is not used widely for ADHF,” and showed a benefit at 3 days from adding the drug to a prescribed loop diuretic regimen, Mark H. Drazner, MD, University of Texas Southwestern Medical Center, Dallas, told this news organization.

The benefit didn’t translate into improved clinical outcomes; indeed, mortality at 3 months was numerically higher in the acetazolamide group, observed Dr. Drazner, who is unaffiliated with the study.

Although ADVOR isn’t powered for mortality, he acknowledged, “one would expect the enhanced decongestion would have led to improved outcomes,” or at least a signal of such improvement.

It’s worth noting, Dr. Drazner added, “that the strategy tested was to add acetazolamide up front, on day 1, before loop diuretics were maximized.”

Indeed, the published report says all patients received IV loop diuretics at double the oral maintenance dose, given the first day in a single bolus immediately on randomization. The dose was split into two doses, given at least 6 hours apart, on day 2 and day 3. “The bolus of acetazolamide or matching placebo was administered simultaneously with the first dose of loop diuretics each day,” it states.

Although the protocol called for one loop diuretic dose on day 1, typically in practice patients would be dosed twice or three times each day, Dr. Drazner observed. Once-daily IV diuretic dosing may be less effective than a 2- or 3-times-per-day schedule, he said. As a result, acetazolamide might achieve faster decongestion after it is added to the loop diuretic, a benefit that would not otherwise be available in practice.
 

Messages for practice

Before this trial, Dr. Drazner said, he would usually add the thiazide diuretic metolazone as needed “to augment diuresis beyond maximum loop diuretics.” After ADVOR, “I’d be willing to try acetazolamide in that setting, recognizing I also don’t know the impact of metolazone on outcomes.”

Still, he would restrict either drug to patients who fail on maximal loop diuretics “rather than adding it routinely and up front, before the loop diuretics are maximized.”

More data are needed, Dr. Drazner said, including from a larger clinical-outcomes trial to confirm the strategy’s safety, before “the up-front addition of acetazolamide to submaximal loop diuretics doses” could become part of standard practice in ADHF.

Given the data so far, including those from ADVOR, “treatment with loop diuretics alone is probably sufficient for successful decongestion” among patients likely to respond to the drugs: that is, “those who are younger, those who have less severe or new-onset heart failure, and those who have normal kidney function,” states an editorial accompanying the published report.

“However, for the large group of patients who have some degree of diuretic resistance, or for those who have an inadequate initial response to loop-diuretic therapy, these data suggest the use of acetazolamide as a reasonable adjunct to achieving more rapid decongestion,” writes G. Michael Felker, MD, Duke University School of Medicine, Durham, N.C. Dr. Felker was lead author on the DOSE primary publication.

ADVOR entered volume-overloaded patients with ADHF and elevated natriuretic peptide levels who had been on oral maintenance with at least 40 mg of furosemide, or equivalent doses of other loop diuretics, for at least a month before randomization.

They were assigned to either IV acetazolamide at 500 mg once daily (n = 259) or placebo (n = 260) on top of an IV loop diuretic, at 27 centers in Belgium.

The risk ratio for the primary endpoint, successful decongestion after 3 days, was 1.46 (95% confidence interval, 1.17-1.82, P < .001) for the acetazolamide versus placebo groups.

In exploratory analyses, acetazolamide versus placebo, the RR for successful decongestion among patients who survived to discharge was increased at 1.27 (95% CI, 1.13-1.43). The hazard ratio for death from any cause at 3 months was not significant at 1.28 (95% CI, 0.78-2.05), nor was the HR for heart-failure rehospitalization at 3 months, 1.07 (95% CI, 0.71-1.59).

The role of SGLT2 inhibitors

ADVOR, understandably but maybe problematically, excluded patients taking SGLT2 inhibitors. The drugs have diuretic effects, among other useful properties, and became core therapy for a range of heart failure types after the trial was designed.

“This exclusion presents a conundrum for applying these results in contemporary clinical care,” Dr. Felker writes. For example, “the data supporting the efficacy and safety of SGLT2 inhibitors across the broad spectrum of patients with heart failure are now overwhelming, and most patients who are hospitalized for heart failure have a clear indication for these agents.”

Given that no ADVOR patients were on the drugs, his editorial states, “we can only speculate as to the efficacy of acetazolamide in patients treated with background SGLT2 inhibitors, which could potentially be additive, subadditive, or synergistic.”

The SGLT2 inhibitors will likely “be used in ADHF in the future, based on studies such as EMPULSE. It will be important to know whether SGLT2 inhibitors change the risk-benefit of also giving acetazolamide,” Dr. Drazner said when interviewed.

“I don’t think there’s any safety issue with regards to the combination of SGLT2 inhibitors and acetazolamide,” Dr. Mullens said. Their diuretic effects are likely to be additive, he proposed.

“Although SGLT2 inhibitors and acetazolamide both exert natriuretic and diuretic effects on the proximal tubules, their mode of action and potency differ substantially,” the published report states.

ADVOR is funded by the Belgian Health Care Knowledge Center. Dr. Mullens discloses receiving fees for speaking from Abbott Fund, AstraZeneca, Bayer, Boehringer Ingelheim, Boston Scientific, Medtronic, and Novartis. Disclosures for the other authors are at NEJM.org. Dr. Drazner has reported no relevant financial relationships. Dr. Felker discloses serving as a consultant for AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Cardionomic, Cytokinetics, Novartis, Reprieve, and Sequana.

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