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Clinical potential of vorapaxar in cardiovascular risk reduction in patients with atherosclerosis

Authors Diehl P, Bode C, Duerschmied D

Received 18 March 2015

Accepted for publication 28 May 2015

Published 3 August 2015 Volume 2015:11 Pages 1133—1138


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Professor Garry Walsh

Philipp Diehl, Christoph Bode, Daniel Duerschmied

Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Freiburg, Germany

Abstract: Vorapaxar (ZONTIVITY™, formerly known as SCH 530348) is a specific, orally active antagonist of the protease-activated receptor-1 (PAR-1) on platelets. It inhibits thrombin-induced platelet activation by binding to the ectodomain of PAR-1. After animal studies and Phase II studies showed that vorapaxar sufficiently inhibits platelet activation without significantly increasing bleeding complications, safety and efficacy of vorapaxar were assessed in two large multicenter trials in patients with coronary artery disease and atherosclerosis. The Thrombin-Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndromes (TRACER) trial investigated safety and efficacy of vorapaxar in patients with an acute coronary syndrome without ST-segment elevation. The Trial to Assess the Effects of Vorapaxar in Preventing Heart Attack and Stroke in Patients With Atherosclerosis-Thrombolysis In Myocardial Infarction 50 (TRA 2°P-TIMI 50) investigated atherothrombotic events in patients with stable atherosclerosis. Results of both studies suggested that vorapaxar given in addition to standard antiplatelet therapy can reduce atherothrombotic events, but increases the risk of mild and moderate bleeding complications. This review article summarizes the main results of TRACER and TRA 2°P-TIMI 50 and suggests patient cohorts that might benefit from treatment with vorapaxar in addition to standard antiplatelet therapy.

Keywords: vorapaxar, antiplatelet therapy, atherosclerosis, myocardial infarction

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