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Semin Thromb Hemost 2012; 38(07): 645-651
DOI: 10.1055/s-0032-1326785
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Diagnosis and Management of High Platelet Reactivity on Treatment with Clopidogrel

Marco Cattaneo
1   Dipartimento di Scienze della Salute, Medicina 3, Ospedale San Paolo, Università degli Studi di Milano, Milano, Italy
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Publikationsdatum:
03. Oktober 2012 (online)

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Abstract

Clopidogrel is an antithrombotic drug that inhibits the P2Y12 platelet receptor for adenosine diphosphate. Wide interindividual variability of responses to clopidogrel were reported in several studies: about one-third of treated patients exhibit high on-treatment platelet reactivity. Genetic and environmental factors influence the absorption and/or the extent of metabolism of clopidogrel (which is a prodrug) to its active metabolite and this contributes to the observed variability of response. Tailored treatment based on the results of laboratory tests of platelet function was proposed as a solution to this problem. However, we still need to identify the ideal laboratory test and to answer basic questions on its clinical utility and cost-effectiveness, before monitoring clopidogrel therapy can be recommended in clinical practice. When possible, the use of alternative drugs with more uniform and predictable bioavailability and with favorable profiles in terms of risk/benefit and cost/benefit ratios should be preferred.

Keywords

clopidogrel - P2Y12 - prasugrel - ticagrelor - acute coronary syndromes
 

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