Efficacy and safety analysis of new P2Y12 inhibitors versus clopidogrel in patients with percutaneous coronary intervention: a meta-analysis.

Objective: New P2Y12 inhibitors, classified as oral (prasugrel and ticagrelor) and intravenous (cangrelor and elinogrel) drugs, have shown improved antithrombotic effects compared with clopidogrel in patients with acute coronary syndrome (ACS) or patients undergoing percutaneous coronary intervention (PCI) in landmark trials. The purpose of this study was to perform a meta-analysis of randomized trials that compared new P2Y12 inhibitors with clopidogrel to determine their efficacy and safety in patients undergoing PCI.

Methods: Randomized controlled trials of at least 4 weeks, comparing new P2Y12 inhibitors with clopidogrel in PCI, were identified using the electronic databases Cochrane Central Register of Controlled Trials, Medline, PubMed, Web of Science, and Google Scholar from January 1, 1980, to July 31, 2014.