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Main | | | | | | |
| Brand Name | Effient, fka CS-747 | | | | |
| Generic Name | Prasugrel | | | | |
| Timeline | Study completes in Mid 2007? Data likely to be released in late 2007. (delayed from late 2006). MAA approved 4/09. | | | | |
| Mechanism | Develop drug as superior to Plavix regardless of Plavix IP | | | | |
| | Thienopyridine class of ADP receptor inhibitors (on P2Y12 receptor), like ticlopidine and clopidogrel. | | | | |
| | Plavix is metabolized slowly, so giving it at 3 hours puts it at a disadvantage. Prasugrel works within 30 minutes. | | | | |
| | Mechanism may suggest that prasugrel avoids the 30% non-responder rate seen with Plavix. | | | | |
| | Prasugrel is a prodrug like Plavix, but only requires one step versus two for Plavix. | | | | |
| Economics | US/UK 50-50 with royalty to Daiichi Sankyo in other territories | | | | |
| Commentary | "Cost is a big issue". | | | | |
| Rx | | Effient | Plavix | Market | Share |
| | 12/18/2009 | 2962 | 686130 | 689092 | 0.004298410081672694 |
| | 12/11/2009 | 2684 | 691185 | 693869 | 0.003868165316507871 |
| | 12/4/2009 | 2430 | 775061 | 777491 | 0.003125438107965237 |
| | 11/27/2009 | 2089 | 601931 | 604020 | 0.00345849475182941 |
| | 11/20/2009 | 2166 | 672605 | 674771 | 0.003209977903614708 |
| | 11/13/2009 | 1800 | 680955 | 682755 | 0.00263637761715403 |
| | 11/6/2009 | 1808 | 726294 | 728102 | 0.002483168567041431 |
| | 10/30/2009 | 1550 | 687653 | 689203 | 0.002248974540157254 |
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| Price | $5.36/day. | | | | |
| Clinical Trials | | | | | |
| | result from p2 cross-over study at ACC in March 2005 | | | | |
| | Lower dose (5mg) studies to begin? | | | | |
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| | TIMI-38 (TRITON) study, n=13614, head-to-head vs. Plavix in ACS undergoing PCI - Results November 4 expectation | | | | |
| | 700-800 sites, started enrolling Nov 1st 2005, finished enrolling Jan 2007. Study completes July 2007. 12 month followup. | | | | |
| | PE is composite 30-day MACE. Study ends after 875 events and 6 months past last patient enrolled. Event rate has been lower than expected. | | | | |
| | Results: Lowered stent thrombosis by 52%. Lowered primary endpoint 19% vs Plavix. | | | | |
| | Docs think 10-15% improvement for Prasugrel with better PK. | | | | |
| | Data to be presented at AHA 2007/ACC 2008. | | | | |
| | SNY R&D Head notes favorable prasugrel design: lower Plavix loading dose, randomization 3 hours ahead of PCI vs 6 hours (optimal). | | | | |
| | 300mg loading dose for Plavix is suboptimal as many physicians use 600mg. Label indicates 300mg. | | | | |
| | Enrollment criteria different from JUMBO. TRITON includes only UA/NSTEMI with TIMI>3. JUMBO TIMI mean was 2-2.5. | | | | |
| | Recurrent event sub-analysis and ESC 2008 data are forthcoming. 52% reduction in stent-thrombosis. | | | | |
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| | JUMBO Phase II | | | | |
| | n=900 presented at ESC 2004 showed non-inferiority to Plavix | | | | |
| | Subset analysis of patients on 40mg loading dose with 7.5mg maintenance, 60/10mg or 60/15mg. | | | | |
| | at 10mg/day maintenance two patients exhibited complete inhibition of collagen-induced platelet aggregation | | | | |
| | Investigator expects bleeds and mortality to be higher for Prasugrel in TRITON. | | | | |
| | 1.7% bleeding vs 1.2% with Plavix but no risks of major bleeds. | | | | |
| | 9.4% MACE for Plavix, 7.2% MACE for prasugrel, p=0.30. MACE % at 30 days. | | | | |
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| | Phase III TRILOGY n=7243 unstable angina or MI without ST elevation who did not undergo revascularization | | | | |
| | 13.9% hit the primary endpoint of death, CV, MI, etc in prasugrel versus 16.0% in Plavix, HR=0.91, p=0.21. | | | | |
| | Bleeding similar. | | | | |