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Medical Science Monitor Basic Research


eISSN: 1643-3750

Novel Oral P2Y12 Inhibitor Prasugrel vs. Clopidogrel in Patients with Acute Coronary Syndrome: Evidence Based on 6 Studies

Min Jia, Zaibo Li, Hongtao Chu, Lin Li, Keyong Chen

Department of Cardiovascular Medicine, Zaozhuang Municipal Hospital, Zaozhuang, Shandong, China (mainland)

Med Sci Monit 2015; 21:1131-1137

DOI: 10.12659/MSM.893914

Available online:

Published: 2015-04-20


BACKGROUND: Whether prasugrel can take the place of clopidogrel for patients with acute coronary syndrome (ACS) is not clear. The aim of this study was to perform a meta-analysis for systematically reviewing the evidence on prasugrel in comparison to clopidogrel in patients with ACS.
MATERIAL AND METHODS: Relevant prospective and retrospective studies were searched in databases. Six studies were finally included. Pooled risk ratios (RRs) and 95% confidence intervals (CIs) were calculated to assess all causes of death, myocardial infarction (MI), stroke, major bleeding, major/minor bleeding, and stent thrombosis (for PCI performed).
RESULTS: Compared with clopidogrel, prasugrel had similar risks of all cause of death (Pooled RR: 0.83; 95% CI: 0.64–1.06, p=0.14, I2=55%), MI (Pooled RR: 0.86; 95% CI: 0.71–1.04, p=0.12) and stroke (pooled RR: 0.88; 95% CI: 0.70–1.10, p=0.25). However, prasugrel was associated with significantly higher risk of both major bleeding (Pooled RR: 1.19; 95% CI: 0.99–1.44, p=0.06, I2=0%) and the risk of total major and minor bleeding (Pooled RR: 1.30; 95% CI: 1.15–1.48, p<0.0001, I2=0%). For the patients who underwent percutaneous coronary intervention (PCI), prasugrel was associated with significantly lower risk of stent thrombosis (Pooled RR: 0.47; 95% CI: 0.34–0.61, p<0.00001, I2=0%).
CONCLUSIONS: Prasugrel has similar effects as clopidogrel in terms of all causes of death, MI, and stroke in ACS patients. For the patients who underwent PCI, prasugrel contributes to lower risk of stent thrombosis. However, prasugrel is associated with significantly higher risk of bleeding. For the patients with active pathological bleeding or a history of stroke and/or TIA, prasugrel should not be recommended.

Keywords: Administration, Oral, Acute Coronary Syndrome - mortality, Evidence-Based Medicine, Hemorrhage - etiology, Myocardial Infarction - etiology, Platelet Aggregation Inhibitors - therapeutic use, Prasugrel Hydrochloride - therapeutic use, Prospective Studies, Purinergic P2Y Receptor Antagonists - therapeutic use, Risk Factors, Stroke - etiology, Thrombosis - etiology, Ticlopidine - therapeutic use