Study Results Show Investigational Drug, Prasugrel, Cuts Risk of Stent-Related Clots by More than Half Versus C...(stents (BMS) (1.27 percent vs.2.41 perce...),Health

In the analysis, prasugrel was consistent in reducing stent thrombosis, compared to clopidogrel, whether assessment occurred early or late (<30 days and greater than or equal to 30 days, out to 450 days, the median duration of therapy), regardless of the type of stent used (bare metal or drug-eluting), and regardless of which academic research consortium (ARC) definition of stent thrombosis was used - definite/confirmed stent thrombosis, definite/confirmed plus probable stent thrombosis, and definite/confirmed plus probable plus possible stent thrombosis. Definite/probable stent thrombosis was reduced by 59 percent in prasugrel-treated patients within 30 days of stent placement (0.64 percent vs. 1.56 percent, p<0.0001), and by 40 percent after 30 days (out to 450 days, 0.49 percent vs. 0.82 percent, p=0.03).

"Stent thrombosis is very serious, given the high risk of mortality. In TRITON, among 210 patients with definite or probable stent thrombosis, 186 (89 percent) either died or experienced an MI as a result of the event," said Francis Plat, M.D., vice president, clinical development, Daiichi Sankyo Company, Limited. "We were excited by the results of this study and the possibility that prasugrel may someday provide an alternative treatment for ACS patients undergoing PCI and receiving coronary stents."

A 19 percent reduction in risk was observed with prasugrel compared with clopidogrel among all patients receiving a stent (9.7 percent vs. 11.9 percent, p=0.0001) in TRITON's primary endpoint of cardiovascular death, non- fatal heart attack, or non-fatal stroke. A 20 percent relative reduction favoring prasugrel was observed in the primary endpoint in patients who received only a bare metal stent (10.0 percent vs. 12.2 percent, p=0.003), and in patients who received only a drug-eluting stent, results showed an 18 percent relative reduction in the primary endpoint favoring prasugrel (9.0 per
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