A1 Refereed original research article in a scientific journal
Carboxylesterase 1 c.428G>A single nucleotide variation increases the antiplatelet effects of clopidogrel by reducing its hydrolysis in humans
Authors: Tarkiainen EK, Holmberg MT, Tornio A, Neuvonen M, Neuvonen PJ, Backman JT, Niemi M
Publisher: WILEY
Publication year: 2015
Journal: Clinical Pharmacology and Therapeutics
Journal name in source: CLINICAL PHARMACOLOGY & THERAPEUTICS
Journal acronym: CLIN PHARMACOL THER
Volume: 97
Issue: 6
First page : 650
Last page: 658
Number of pages: 9
ISSN: 0009-9236
DOI: https://doi.org/10.1002/cpt.101
Abstract
Carboxylesterase 1 (CES1) hydrolyzes the prodrug clopidogrel to an inactive carboxylic acid metabolite. We studied the pharmacokinetics and pharmacodynamics of 600mg oral clopidogrel in healthy white volunteers, including 10 carriers and 12 noncarriers of CES1 c.428G>A (p.Gly143Glu, rs71647871) single nucleotide variation (SNV). Clopidogrel carboxylic acid to clopidogrel area under the plasma concentration-time curve from 0 hours to infinity (AUC(0-)) ratio was 53% less in CES1 c.428G>A carriers than in noncarriers (P=0.009), indicating impaired hydrolysis of clopidogrel. Consequently, the AUC(0-) of clopidogrel and its active metabolite were 123% (P=0.004) and 67% (P=0.009) larger in the c.428G>A carriers than in noncarriers. Consistent with these findings, the average inhibition of P2Y(12)-mediated platelet aggregation 0-12 hours after clopidogrel intake was 19 percentage points higher in the c.428G>A carriers than in noncarriers (P=0.036). In conclusion, the CES1 c.428G>A SNV increases clopidogrel active metabolite concentrations and antiplatelet effects by reducing clopidogrel hydrolysis to inactive metabolites.
Carboxylesterase 1 (CES1) hydrolyzes the prodrug clopidogrel to an inactive carboxylic acid metabolite. We studied the pharmacokinetics and pharmacodynamics of 600mg oral clopidogrel in healthy white volunteers, including 10 carriers and 12 noncarriers of CES1 c.428G>A (p.Gly143Glu, rs71647871) single nucleotide variation (SNV). Clopidogrel carboxylic acid to clopidogrel area under the plasma concentration-time curve from 0 hours to infinity (AUC(0-)) ratio was 53% less in CES1 c.428G>A carriers than in noncarriers (P=0.009), indicating impaired hydrolysis of clopidogrel. Consequently, the AUC(0-) of clopidogrel and its active metabolite were 123% (P=0.004) and 67% (P=0.009) larger in the c.428G>A carriers than in noncarriers. Consistent with these findings, the average inhibition of P2Y(12)-mediated platelet aggregation 0-12 hours after clopidogrel intake was 19 percentage points higher in the c.428G>A carriers than in noncarriers (P=0.036). In conclusion, the CES1 c.428G>A SNV increases clopidogrel active metabolite concentrations and antiplatelet effects by reducing clopidogrel hydrolysis to inactive metabolites.
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