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2012-01-05

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/49763

Thrombin-receptor antagonist vorapaxar in acute coronary syndromes

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http://dx.doi.org/10.1056/NEJMoa1109719

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Background: Vorapaxar is a new oral protease-activated-receptor 1 (PAR-1) antagonist that inhibits thrombin-induced platelet activation. Methods: In this multinational, double-blind, randomized trial, we compared vorapaxar with placebo in 12,944 patients who had acute coronary syndromes without ST-segment elevation. The primary end point was a composite of death from cardiovascular causes, myocardial infarction, stroke, recurrent ischemia with rehospitalization, or urgent coronary revascularization. RESULTS: Follow-up in the trial was terminated early after a safety review. After a median follow-up of 502 days (interquartile range, 349 to 667), the primary end point occurred in 1031 of 6473 patients receiving vorapaxar versus 1102 of 6471 patients receiving placebo (Kaplan-Meier 2-year rate, 18.5% vs. 19.9%; hazard ratio, 0.92; 95% confidence interval [CI], 0.85 to 1.01; P = 0.07). A composite of death from cardiovascular causes, myocardial infarction, or stroke occurred in 822 patients in the vorapaxar group versus 910 in the placebo group (14.7% and 16.4%, respectively; hazard ratio, 0.89; 95% CI, 0.81 to 0.98; P = 0.02). Rates of moderate and severe bleeding were 7.2% in the vorapaxar group and 5.2% in the placebo group (hazard ratio, 1.35; 95% CI, 1.16 to 1.58; P<0.001). Intracranial hemorrhage rates were 1.1% and 0.2%, respectively (hazard ratio, 3.39; 95% CI, 1.78 to 6.45; P<0.001). Rates of nonhemorrhagic adverse events were similar in the two groups. Conclusions: In patients with acute coronary syndromes, the addition of vorapaxar to standard therapy did not significantly reduce the primary composite end point but significantly increased the risk of major bleeding, including intracranial hemorrhage. (Funded by Merck; TRACER ClinicalTrials.gov number, NCT00527943.)

Matèries

Malalties cardiovasculars, Bypass cardiopulmonar, Plaquetes sanguínies, Medicaments

Matèries (anglès)

Cardiovascular diseases, Bypass cardiopulmonary, Blood platelets, Drugs

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Articles publicats en revistes (Ciències Clíniques)

Citació

TRICOCI, Pierluigi, CEQUIER FILLAT, Àngel r., HELD, Claes, MOLITERNO, David j., ARMSTRONG, Paul w., AMBROSIO, Giuseppe, LEONARDI, Sergio. Thrombin-receptor antagonist vorapaxar in acute coronary syndromes. _New England Journal of Medicine_. 2012. Vol. 366, núm. 1, pàgs. 20-33. [consulta: 20 de gener de 2026]. ISSN: 0028-4793. [Disponible a: https://hdl.handle.net/2445/49763]

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