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Clin Med Insights Cardiol. 2010 Dec 1;4:117-28. doi: 10.4137/CMC.S4323.

Clopidogrel: a pharmacogenomic perspective on its use in coronary artery disease.

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Departments of Family Medicine and Clinical Pharmacy, West Virginia University-Charleston Division, Charleston, West Virginia, USA.


The thienopyridine antiplatelet agent clopidogrel is an effective drug for the prevention of vascular events. However, data has accumulated over time to suggest it is prone to significant interpatient variability. While there are several factors that contribute to this, one of the most important is variability in forming the active metabolite necessary for clopidogrel function. Several enzymes are involved in formation of this metabolite, and two, CYP2C19 and P-glycoprotein, appear to have alleles that both occur frequently in the population and have a clinically significant impact. Patients carrying these alleles can be identified, but it remains to be determined if this information is necessary or sufficient for risk stratification. Furthermore, if patients with high-risk alleles are identified, it is unclear how treatment should be adjusted.


ABCB1; clopidogrel; cytochrome P4502C19; on-treatment platelet reactivity

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