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Abstract Title:

Long-term risk of cardiovascular events with rosiglitazone: a meta-analysis.

Abstract Source:

JAMA. 2007 Sep 12;298(10):1189-95. PMID: 17848653

Abstract Author(s):

Sonal Singh, Yoon K Loke, Curt D Furberg

Article Affiliation:

Department of Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA. sosingh@wfubmc.edu

Abstract:

CONTEXT: Recent reports of serious adverse events with rosiglitazone use have raised questions about whether the evidence of harm justifies its use for treatment of type 2 diabetes. OBJECTIVE: To systematically review the long-term cardiovascular risks of rosiglitazone, including myocardial infarction, heart failure, and cardiovascular mortality. DATA SOURCES: We searched MEDLINE, the GlaxoSmithKline clinical trials register, the US Food and Drug Administration Web site, and product information sheets for randomized controlled trials, systematic reviews, and meta-analyses published in English through May 2007. STUDY SELECTION: Studies were selected for inclusion if they were randomized controlled trials of rosiglitazone for prevention or treatment of type 2 diabetes, had at least 12 months of follow-up, and monitored cardiovascular adverse events and provided numerical data on all adverse events. Four studies were included after detailed screening of 140 trials for cardiovascular events. DATA EXTRACTION: Relative risks (RRs) of myocardial infarction, heart failure, and cardiovascular mortality were estimated using a fixed-effects meta-analysis of 4 randomized controlled trials (n = 14 291, including 6421 receiving rosiglitazone and 7870 receiving control therapy, with a duration of follow-up of 1-4 years). RESULTS: Rosiglitazone significantly increased the risk of myocardial infarction (n = 94/6421 vs 83/7870; RR, 1.42; 95% confidence interval [CI], 1.06-1.91; P = .02) and heart failure (n = 102/6421 vs 62/7870; RR, 2.09; 95% CI, 1.52-2.88; P<.001) without a significant increase in risk of cardiovascular mortality (n = 59/6421 vs 72/7870; RR, 0.90; 95% CI, 0.63-1.26; P = .53). There was no evidence of substantial heterogeneity among the trials for these end points (I(2) = 0% for myocardial infarction, 18% for heart failure, and 0% for cardiovascular mortality). CONCLUSION: Among patients with impaired glucose tolerance or type 2 diabetes, rosiglitazone use for at least 12 months is associated with a significantly increased risk of myocardial infarction and heart failure, without a significantly increased risk of cardiovascular mortality.

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Sayer Ji
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