1. On-treatment analysis of the Improved Reduction of Outcomes: Vytorin Efficacy International Trial (IMPROVE-IT).
- Author
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Blazing MA, Giugliano RP, de Lemos JA, Cannon CP, Tonkin A, Ballantyne CM, Lewis BS, Musliner TA, Tershakovec AM, Lokhnygina Y, White JA, Reist C, McCagg A, and Braunwald E
- Subjects
- Aged, Anticholesteremic Agents administration & dosage, Anticholesteremic Agents adverse effects, Dose-Response Relationship, Drug, Drug Monitoring methods, Drug Synergism, Drug Therapy, Combination methods, Drug Therapy, Combination statistics & numerical data, Female, Humans, Male, Middle Aged, Treatment Outcome, Acute Coronary Syndrome blood, Acute Coronary Syndrome diagnosis, Acute Coronary Syndrome drug therapy, Cholesterol, LDL blood, Ezetimibe administration & dosage, Ezetimibe adverse effects, Simvastatin administration & dosage, Simvastatin adverse effects
- Abstract
Background: We aimed to determine the efficacy and safety of adding ezetimibe (Ez) to simvastatin (S) in a post-acute coronary syndrome (ACS) population in a prespecified on-treatment analysis., Methods: We evaluated 17,706 post-ACS patients from the IMPROVE-IT trial who had low-density lipoprotein cholesterol values between 50 and 125 mg/dL and who received Ez 10 mg/d with S 40 mg/d (Ez/S) or placebo with simvastatin 40 mg/d (P/S). The primary composite end point was cardiovascular death, myocardial infarction, unstable angina, coronary revascularization ≥30 days postrandomization, or stroke. The on-treatment analysis included patients who received study drug for the duration of the trial or experienced a primary end point or noncardiovascular death within 30 days of drug discontinuation., Results: Mean low-density lipoprotein cholesterol values at 1 year were 71 mg/dL for P/S and 54 mg/dL for Ez/S (absolute difference -17 mg/dL = -24%; P < .001). The 7-year Kaplan-Meier estimate of the primary end point occurred in 32.4% in the P/S arm and 29.8% in the Ez/S arm (absolute difference 2.6%; HR
adj 0.92 [95% CI 0.87-0.98]; P = .01). The absolute treatment effect favoring Ez/S was 30% greater than in the intention-to-treat analysis of IMPROVE-IT., Conclusions: This analysis provides additional support for the efficacy and safety of adding Ez to S in this high-risk, post-ACS population., (Copyright © 2016 Elsevier Inc. All rights reserved.)- Published
- 2016
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