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Incretin-based diabetes drugs don’t raise heart failure risk

Incretin-based antidiabetic drugs didn’t raise the risk of hospitalization for heart failure in an international observational study involving 1.5 million patients reported online March 24 in the New England Journal of Medicine.

The safety of dipeptidyl peptidase 4 (DPP-4) inhibitors such as sitagliptin, saxagliptin, and linagliptin, and of glucagon-like peptide–1 (GLP-1) analogues such as exenatide and liraglutide is controversial. Some clinical trials have reported these agents raise the risk of heart failure (HF) while others have found no increase in risk, but all of the studies are underpowered to settle the question, said Kristian B. Filion, Ph.D., of McGill University and the Center for Clinical Epidemiology, Lady Davis Research Institute, Jewish General Hospital, and his associates.

They examined this issue by analyzing data from several large cohorts of diabetes patients treated in routine clinical practice in the United States, Canada, and England. Their study population comprised 1,499,650 adults who began taking noninsulin antidiabetic drugs at or after the date that incretin-based agents entered the market. “With 3.2 million person-years of observations, we had the statistical power to robustly assess this important drug safety issue,” the investigators said.

Patients taking DPP-4 inhibitors and GLP-1 analogues were compared with those taking non–incretin-based drugs such as biguanides, sulfonylureas, thiazolidinediones, alpha-glucosidase inhibitors, meglitinides, and sodium-glucose cotransporter-2 inhibitors. A total of 29,741 patients were hospitalized for HF, for an overall rate of 9.2 events per 1,000 person-years.

Incretin-based drugs were not associated with an increased rate of hospitalization for HF when compared with other antidiabetic drugs (hazard ratio, 0.82) among the roughly 1.4 million patients who had no history of HF at baseline. Individually, neither DPP-4 inhibitors (HR, 0.84) nor GLP-1 analogues (HR, 0.95) were associated with an increased risk of hospitalization for HF. These findings remained consistent through several subgroup and sensitivity analyses that categorized the data according to duration of exposure, presence or absence of a history of MI, and duration of diabetes, Dr. Filion and his associates said (N Engl J Med. 2016 Mar 24. doi: 10.1056/NEJMoa1506115).

Similarly, incretin-based drugs were not associated with an increased rate of hospitalization for HF when compared with other antidiabetic drugs among the approximately 80,000 patients who had a history of HF at baseline (HR, 0.86).

This study was supported by the Canadian Institutes of Health Research and the Quebec Foundation for Health Research. Dr. Filion reported having no relevant financial disclosures; some of his associates reported ties to numerous industry sources.

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Incretin-based antidiabetic drugs didn’t raise the risk of hospitalization for heart failure in an international observational study involving 1.5 million patients reported online March 24 in the New England Journal of Medicine.

The safety of dipeptidyl peptidase 4 (DPP-4) inhibitors such as sitagliptin, saxagliptin, and linagliptin, and of glucagon-like peptide–1 (GLP-1) analogues such as exenatide and liraglutide is controversial. Some clinical trials have reported these agents raise the risk of heart failure (HF) while others have found no increase in risk, but all of the studies are underpowered to settle the question, said Kristian B. Filion, Ph.D., of McGill University and the Center for Clinical Epidemiology, Lady Davis Research Institute, Jewish General Hospital, and his associates.

They examined this issue by analyzing data from several large cohorts of diabetes patients treated in routine clinical practice in the United States, Canada, and England. Their study population comprised 1,499,650 adults who began taking noninsulin antidiabetic drugs at or after the date that incretin-based agents entered the market. “With 3.2 million person-years of observations, we had the statistical power to robustly assess this important drug safety issue,” the investigators said.

Patients taking DPP-4 inhibitors and GLP-1 analogues were compared with those taking non–incretin-based drugs such as biguanides, sulfonylureas, thiazolidinediones, alpha-glucosidase inhibitors, meglitinides, and sodium-glucose cotransporter-2 inhibitors. A total of 29,741 patients were hospitalized for HF, for an overall rate of 9.2 events per 1,000 person-years.

Incretin-based drugs were not associated with an increased rate of hospitalization for HF when compared with other antidiabetic drugs (hazard ratio, 0.82) among the roughly 1.4 million patients who had no history of HF at baseline. Individually, neither DPP-4 inhibitors (HR, 0.84) nor GLP-1 analogues (HR, 0.95) were associated with an increased risk of hospitalization for HF. These findings remained consistent through several subgroup and sensitivity analyses that categorized the data according to duration of exposure, presence or absence of a history of MI, and duration of diabetes, Dr. Filion and his associates said (N Engl J Med. 2016 Mar 24. doi: 10.1056/NEJMoa1506115).

Similarly, incretin-based drugs were not associated with an increased rate of hospitalization for HF when compared with other antidiabetic drugs among the approximately 80,000 patients who had a history of HF at baseline (HR, 0.86).

This study was supported by the Canadian Institutes of Health Research and the Quebec Foundation for Health Research. Dr. Filion reported having no relevant financial disclosures; some of his associates reported ties to numerous industry sources.

Incretin-based antidiabetic drugs didn’t raise the risk of hospitalization for heart failure in an international observational study involving 1.5 million patients reported online March 24 in the New England Journal of Medicine.

The safety of dipeptidyl peptidase 4 (DPP-4) inhibitors such as sitagliptin, saxagliptin, and linagliptin, and of glucagon-like peptide–1 (GLP-1) analogues such as exenatide and liraglutide is controversial. Some clinical trials have reported these agents raise the risk of heart failure (HF) while others have found no increase in risk, but all of the studies are underpowered to settle the question, said Kristian B. Filion, Ph.D., of McGill University and the Center for Clinical Epidemiology, Lady Davis Research Institute, Jewish General Hospital, and his associates.

They examined this issue by analyzing data from several large cohorts of diabetes patients treated in routine clinical practice in the United States, Canada, and England. Their study population comprised 1,499,650 adults who began taking noninsulin antidiabetic drugs at or after the date that incretin-based agents entered the market. “With 3.2 million person-years of observations, we had the statistical power to robustly assess this important drug safety issue,” the investigators said.

Patients taking DPP-4 inhibitors and GLP-1 analogues were compared with those taking non–incretin-based drugs such as biguanides, sulfonylureas, thiazolidinediones, alpha-glucosidase inhibitors, meglitinides, and sodium-glucose cotransporter-2 inhibitors. A total of 29,741 patients were hospitalized for HF, for an overall rate of 9.2 events per 1,000 person-years.

Incretin-based drugs were not associated with an increased rate of hospitalization for HF when compared with other antidiabetic drugs (hazard ratio, 0.82) among the roughly 1.4 million patients who had no history of HF at baseline. Individually, neither DPP-4 inhibitors (HR, 0.84) nor GLP-1 analogues (HR, 0.95) were associated with an increased risk of hospitalization for HF. These findings remained consistent through several subgroup and sensitivity analyses that categorized the data according to duration of exposure, presence or absence of a history of MI, and duration of diabetes, Dr. Filion and his associates said (N Engl J Med. 2016 Mar 24. doi: 10.1056/NEJMoa1506115).

Similarly, incretin-based drugs were not associated with an increased rate of hospitalization for HF when compared with other antidiabetic drugs among the approximately 80,000 patients who had a history of HF at baseline (HR, 0.86).

This study was supported by the Canadian Institutes of Health Research and the Quebec Foundation for Health Research. Dr. Filion reported having no relevant financial disclosures; some of his associates reported ties to numerous industry sources.

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FROM THE NEW ENGLAND JOURNAL OF MEDICINE

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Key clinical point: Incretin-based antidiabetic drugs did not raise the risk of hospitalization for heart failure in a large international observational study.

Major finding: Neither DPP-4 inhibitors (HR, 0.84) nor GLP-1 analogues (HR, 0.95) were associated with an increased risk of hospitalization for HF, compared with non–incretin-based antidiabetic drugs.

Data source: A retrospective international observational cohort study involving roughly 1.5 million diabetes patients, of whom 29,741 were hospitalized for HF.

Disclosures: This study was supported by the Canadian Institutes of Health Research and the Quebec Foundation for Health Research. Dr. Filion reported having no relevant financial disclosures; some of his associates reported ties to numerous industry sources.