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Daiichi, Lilly submit NDA for blood-thinning drug Prasugrel
Tokyo | Friday, January 11, 2008, 08:00 Hrs  [IST]

Daiichi Sankyo Company, Limited and Eli Lilly and Company have submitted a New Drug Application (NDA) for blood-thinning drug Prasugrel to the US Food and Drug Administration (FDA).

Prasugrel is an oral antiplatelet agent, initially in development for the treatment of patients with acute coronary syndrome (ACS) who are managed with percutaneous coronary intervention (PCI), including coronary stenting.

If approved for marketing in the United States, the trade name for prasugrel will be Effient, company officials added. "We are elated," said J Anthony Ware, M D, vice president, Lilly and cardiovascular/acute care platform leader for prasugrel. "We feel confident in the strength and completion of this submission package, and plan to complete our submission in Europe in the first quarter of 2008. The benefit/risk profile of this compound, in comparison with the current standard of care, has the potential to improve outcomes for ACS patients undergoing PCI".

The NDA is based upon data from several trials, including the landmark TRITON-TIMI 38 clinical trial, which evaluated the safety and efficacy of prasugrel compared with clopidogrel (Plavix/Iscover) in reducing ischemic events such as non-fatal heart attack, non-fatal stroke and cardiovascular death in 13,608 patients. In the study, treatment with prasugrel resulted in a: - 19 per cent relative risk reduction compared with clopidogrel in all ACS patients in the primary composite endpoint of non-fatal heart attack, non-fatal stroke or cardiovascular death, 52 per cent reduction compared with clopidogrel in stent thrombosis. 30 per cent relative risk reduction compared to clopidogrel in a subset of patients with diabetes on the composite endpoint of non-fatal heart attack, non-fatal stroke, or cardiovascular death.

Risk reductions in the primary composite endpoint with prasugrel compared to clopidogrel were seen as early as three days and continued to diverge for 15 months (the duration of the trial.)

Though the incidence of non-coronary artery bypass grafting(non-CABG) bleeding in Triton was low in both the prasugrel and clopidogrel treatment groups, prasugrel-treated patients experienced significantly higher non-CABG major bleeding and higher rates of life- threatening bleeding.

"Given the overall results from Triton, this submission is particularly meaningful considering that cardiovascular disease is the leading cause of death in the United States and worldwide, killing 16.7 million people each year," said John Alexander, MD, M.P.H., global head of research and development, Daiichi Sankyo Company, Limited.

Acute heart attacks and unstable angina, called acute coronary syndrome, affect more than 840,000 Americans each year and 800,000 people in Europe. Utilizing current medical interventions and treatments, 300,000 people continue to experience recurrent heart attacks and 450,000 people die from heart attacks annually in the US.

Daiichi Sankyo Company, Limited and Eli Lilly and Company are co-developing prasugrel, an investigational oral antiplatelet agent invented by Daiichi Sankyo and its Japanese research partner Ube Industries, Ltd., as a potential treatment, initially for patients with acute coronary syndrome who are managed with PCI. Prasugrel works by inhibiting platelet activation and subsequent aggregation by blocking the P2Y12 adenosine diphosphate (ADP) receptor on the platelet surface. Antiplatelet agents prevent platelets from clumping or sticking together, which can result in clogged arteries and may lead to heart attack or stroke.

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