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Stent Thrombosis With Ticagrelor Versus Clopidogrel in Patients With Acute Coronary Syndromes: An Analysis From the Prospective, Randomized PLATO Trial
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2013 (English)In: Circulation, ISSN 0009-7322, E-ISSN 1524-4539, Vol. 128, no 10, 1055-1065 p.Article in journal (Refereed) Published
Abstract [en]

Background We aimed to describe the effects of ticagrelor versus clopidogrel on stent thrombosis in the Platelet Inhibition and Patient Outcomes (PLATO) trial. Methods and Results Of 18624 patients hospitalized for acute coronary syndromes, 11289 (61%) had at least 1 intracoronary stent. Ticagrelor reduced stent thrombosis compared with clopidogrel across all definitions: definite, 1.37% (n=71) versus 1.93% (n=105; hazard ratio [HR], 0.67; 95% confidence interval [CI], 0.50-0.90; P=0.0091); definite or probable, 2.21% (n=118) versus 2.87% (n=157; HR, 0.75; 95% CI, 0.59-0.95; P=0.017); and definite, probable, and possible, 2.94% (n=154) versus 3.77 (n=201; HR, 0.77; 95% CI, 0.62-0.95). The reduction in definite stent thrombosis was consistent regardless of acute coronary syndrome type, presence of diabetes mellitus, stent type (drug-eluting or bare metal stent), CYP2C19 genetic status, loading dose of aspirin, dose of clopidogrel before randomization, and use of glycoprotein IIb/IIIa inhibitors at randomization. The reduction in stent thrombosis with ticagrelor was numerically greater for late (>30 days; HR, 0.48; 95% CI, 0.24-0.96) and subacute (4 hours-30 days; HR, 0.60; 95% CI, 0.39-0.93) compared with acute (<24 hours; HR, 0.94; 95% CI, 0.43-2.05) stent thrombosis or for patients compliant to therapy (ie, taking blinded study treatment 80% of the time) compared with less compliant patients. Randomization to ticagrelor was a strong independent inverse predictor of definite stent thrombosis (HR, 0.65; 95% CI, 0.48-0.88). Conclusion Ticagrelor compared with clopidogrel reduces the incidence of stent thrombosis in patients with acute coronary syndromes, with consistent benefit across a broad range of patient, stent, and treatment characteristics. Clinical Trial Registration URL: . Unique identifier: NCT00391872.

Place, publisher, year, edition, pages
2013. Vol. 128, no 10, 1055-1065 p.
Keyword [en]
blood platelets, stents, thrombosis
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-209165DOI: 10.1161/CIRCULATIONAHA.113.002589ISI: 000323820200010OAI: oai:DiVA.org:uu-209165DiVA: diva2:656249
Available from: 2013-10-15 Created: 2013-10-15 Last updated: 2013-10-15Bibliographically approved

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Wallentin, LarsJames, Stefan K.
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