• Yue Fei, Cheuk Kiu Lam, and Bernard Man Yung Cheung.
• Division of Clinical Pharmacology and Therapeutics, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, 102 Pokfulam Road, Hong Kong, China.
• Sci Rep. 2020 Oct 8; 10 (1): 16794.

AbstractWhether newer P2Y12 inhibitors are more efficacious and safer than clopidogrel and whether there is a superior one remain uncertain. We compared the effect of P2Y12 inhibitors on clinical outcomes in patients with acute coronary syndrome (ACS). Randomized controlled trials comparing clopidogrel, prasugrel, ticagrelor, or cangrelor, in combination with aspirin were searched. Sixteen trials with altogether 77,896 patients were included. Compared to clopidogrel, cardiovascular mortality was reduced with prasugrel (OR 0.85, 95% CI 0.75-0.97) and ticagrelor (0.82, 0.73-0.93). Myocardial infarction (0.75, 0.63-0.89) and major adverse cardiovascular events (0.80, 0.69-0.94) were reduced by prasugrel. Stent thrombosis was reduced by prasugrel (0.49, 0.38-0.63), ticagrelor (0.72, 0.57-0.90), and cangrelor (0.59, 0.43-0.81). It was reduced more by prasugrel than ticagrelor (0.69, 0.51-0.93). There were more major bleeds with prasugrel (1.24, 1.05-1.48). Thrombolysis in Myocardial Infarction (TIMI) major bleeding was increased with prasugrel compared to clopidogrel (1.36, 1.11-1.66) and ticagrelor (1.33, 1.06-1.67). TIMI minor bleeding was increased with prasugrel (1.44, 1.16-1.77) and cangrelor (1.47, 1.01-2.16) compared to clopidogrel while it was increased with prasugrel compared to ticagrelor (1.32, 1.01-1.72). Prasugrel is preferable to those ACS patients at low bleeding risk to reduce cardiovascular events whereas ticagrelor is a relatively safe antiplatelet drug of choice for most patients.

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