Effect of Qualifying Atherosclerotic Cardiovascular Disease Diagnosis Proximity on Cardiovascular Risk and Benefit of Empagliflozin in the EMPA-REG OUTCOME Trial
Abstract
BACKGROUND: In patients with type 2 diabetes mellitus (T2DM), a history of an ischemic event is associated with increased risk for cardiovascular (CV) disease. Whether patients with T2DM and a recent atherothrombotic diagnosis benefit from early intervention with a sodium-glucose co-transporter 2 inhibitor is unknown.
METHODS: This study is a secondary analysis of the Empagliflozin Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus Patients-Removing Excess Glucose (EMPA-REG OUTCOME), which compared empagliflozin to placebo in adults with T2DM and atherosclerotic CV disease (ASCVD). Participants were categorized based on the time since their last qualifying ASCVD diagnosis (≤ 1 year vs > 1 year). Qualifying ASCVD diagnoses included ischemic or hemorrhagic stroke, myocardial infarction, coronary artery disease, and peripheral artery disease. The primary outcome was a composite of CV death, nonfatal myocardial infarction, or nonfatal stroke.
RESULTS: A total of 6796 participants (n = 4547 empagliflozin, n = 2249 placebo) were included. Median time since the last qualifying ASCVD diagnosis was 3.8 years (quartile 1-quartile 3: 1.5-7.6), and most qualifying diagnoses occurred > 1 year before randomization (≤ 1 year, n = 1214; > 1 year, n = 5582). Empagliflozin reduced the incidence of the primary outcome irrespective of the time since the last qualifying ASCVD diagnosis (≤ 1 year: hazard ratio 0.82, 95% confidence interval: 0.57-1.16; vs > 1 year: hazard ratio 0.85,…
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