Effect of Prasugrel on Platelets After One Week in Patients Already Taking Clopidogrel After a Cardiac Event

Summary

This study will compare the effect of a prasugrel 10-mg maintenance dose with a clopidogrel 75-mg maintenance dose on platelet activity, approximately 1 week after the first dose of study drug, in subjects who have been taking clopidogrel 75 mg daily following a percutaneous coronary intervention (PCI) with placement of a stent, performed to treat acute coronary syndrome (ACS).

Timeline

Start

2006-07

Primary completion

2008-12

Completion

2008-12

Outcome

Met primary endpoint

paper at 1 week (primary end point) was lower after prasugrel MD compared with clopidogrel MD (41.1% vs. 55.0%, p < 0.0001) PMID 20846599 ↗

Publications

• Results Angiolillo DJ, Saucedo JF, Deraad R, Frelinger AL, Gurbel PA, Costigan TM, Jakubowski JA, Ojeh CK, Effron MB; SWAP Investigators. Increased platelet inhibition after switching from maintenance clopidogrel to prasugrel in patients with acute coronary syndromes: results of the SWAP (SWitching Anti Platelet) study. J Am Coll Cardiol. 2010 Sep 21;56(13):1017-23. doi: 10.1016/j.jacc.2010.02.072.
• Saucedo JF, Angiolillo DJ, DeRaad R, Frelinger AL 3rd, Gurbel PA, Costigan TM, Jakubowski JA, Ojeh CK, Duvvuru S, Effron MB; SWAP Investigators. Decrease in high on-treatment platelet reactivity (HPR) prevalence on switching from clopidogrel to prasugrel: insights from the switching anti-platelet (SWAP) study. Thromb Haemost. 2013 Feb;109(2):347-55. doi: 10.1160/TH12-06-0378. Epub 2012 Dec 6.

Drugs

Indications