The presentation of the full results included patients with a prior history of stroke, who were part of the original study design but were discontinued from the trial following the recommendations of the Data Safety Monitoring Board in early 2011. Among patients without a history of stroke, the addition of vorapaxar reduced the risk of CV death, heart attack, stroke or urgent coronary revascularization by 14 percent compared to placebo plus standard of care (10.6 percent vs. 11.8 percent, p<0.001), and reduced the risk of CV death, heart attack or stroke by 16 percent (8.3 percent vs. 9.6 percent, p<0.001). Also, among patients without a history of stroke, there was a non-significant increase in GUSTO severe bleeding (1.4 percent vs. 1.1 percent, p=0.058) and a significant increase in GUSTO moderate bleeding (2.7 percent vs. 1.4 percent, p<0.001) in the vorapaxar group compared with the group receiving standard of care alone.The benefits of vorapaxar were numerically greater in patients who qualified for the study due to a previous heart attack, which was 67 percent (n=17,779) of all patients in the study, the largest cohort. In these patients, vorapaxar reduced the relative risk of CV death, heart attack or stroke by 20 percent (8.1 percent vs. 9.7 percent at three years, p<0.001). Overall, in this subgroup vorapaxar significantly decreased the rate of heart attacks compared to standard of care alone by 17 percent (5.2 percent vs. 6.1 percent, p=0.001). "Despite all of the advances made in cardiovascular medicine, significant residual risk for recurrence of cardiovascular events remains, and that is why Merck is committed to developing medicines like vorapaxar that are intended to provide incremental, additional reductions in residual risk," said Francis Plat, M.D., vice president, Clinical Research, Therapeutic Area Head Atherosclerosis and Cardiovascular Disease, Merck Research Laboratories. "The results from this study showed that the addition of vorapaxar to standard of care, including aspirin, provided an additional reduction in risk. We plan to continue our discussions with the investigators and other outside experts to help define the role of this investigational compound in secondary prevention."
TRA-2P included 26,449 stable patients at 1,032 sites in 32 countries who had previously experienced an ischemic stroke or heart attack no less than 2 weeks and no more than 12 months before randomization, or who had PAD. The goal of the study was to evaluate the efficacy and safety of vorapaxar compared with placebo in addition to standard of care in the secondary prevention setting. In TRA-2P, vorapaxar was administered at a 2.5 mg daily maintenance oral dose for more than one year. The median follow-up time in the trial was 30 months.Additional Information on the Vorapaxar Development Program Vorapaxar has now been evaluated in two major clinical outcomes studies: TRA-2P TIMI 50 (Clinicaltrials.gov identifier: NCT00526474) and TRACER ( Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome), (Clinicaltrials.gov identifier: NCT00527943). TRACER was an acute care, hospital-based study of approximately 12,944 patients with non-ST-segment-elevation acute coronary syndrome. The study was led by the Duke Clinical Research Institute, and results were presented in 2011 at the American Heart Association Scientific Sessions and published in the January 5, 2012 issue of The New England Journal of Medicine (Vol. 366, No.1). The news release can be found at http://www.merck.com/newsroom/news-release-archive/research-and-development/2011_1113.html. About Merck Today's Merck is a global healthcare leader working to help the world be well. Merck is known as MSD outside the United States and Canada. Through our prescription medicines, vaccines, biologic therapies, and consumer care and animal health products, we work with customers and operate in more than 140 countries to deliver innovative health solutions. We also demonstrate our commitment to increasing access to healthcare through far-reaching policies, programs and partnerships. For more information, visit www.merck.com and connect with us on Twitter, Facebook and YouTube. Merck Forward-Looking Statement This news release includes “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Such statements may include, but are not limited to, statements about the benefits of the merger between Merck and Schering-Plough, including future financial and operating results, the combined company’s plans, objectives, expectations and intentions and other statements that are not historical facts. Such statements are based upon the current beliefs and expectations of Merck’s management and are subject to significant risks and uncertainties. Actual results may differ from those set forth in the forward-looking statements.
The following factors, among others, could cause actual results to differ from those set forth in the forward-looking statements: the possibility that all of the expected synergies from the merger of Merck and Schering-Plough will not be realized, or will not be realized within the expected time period; the impact of pharmaceutical industry regulation and health care legislation in the United States and internationally; Merck’s ability to accurately predict future market conditions; dependence on the effectiveness of Merck’s patents and other protections for innovative products; and the exposure to litigation and/or regulatory actions.Merck undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in Merck’s 2011 Annual Report on Form 10-K and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC’s Internet site ( www.sec.gov). 1GUSTO (Global Use of Strategies to Open Occluded Arteries) scale is a criteria for classifying the severity of bleeding