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Interaction of CYP2C19 G681A polymorphism and omeprazole on clopidogrel responsiveness and impact in patients with acute coronary syndrome.

Abstract：

OBJECTIVE:The aim of this study was to explore the individual effects of the CYP2C19 G681A polymorphism and omeprazole use and their interaction on clopidogrel responsiveness in acute coronary syndrome (ACS). The CYP2C19 G681A polymorphism and omeprazole use were both known for retarding the effects of clopidogrel under broad cardiovascular conditions; however, data from ACS patients were limited. METHODS:We conducted a cross-sectional study of 102 ACS patients who received clopidogrel before percutaneous coronary intervention. The platelet function was assessed by a Platelet Function Analyzer-200, in which clopidogrel hyporesponsiveness was defined as a closure time (CT) of ≤ 106 s. The CYP2C19 G681A polymorphism was investigated using the PCR-RFLP technique. Statistical analysis was performed by using χ test, Student's t-test, binary logistic regression, and receiver-operating characteristic (ROC) curve. RESULTS:Carriages of the CYP2C19 681A allele and omeprazole use were present in 47.1 and 37.3% patients, respectively. The mean CT ± SD was 103.1 ± 1.7 s and the prevalence of clopidogrel hyporesponsiveness was 66.7%. The CT was significantly shorter in carriages of the 681A allele compared with the 681G allele (P = 0.002), but had no significant difference in patients with vs. without omeprazole use (P = 0.467). The ROC analysis of an effect on clopidogrel hyporesponsiveness of CYP2C19 G681A alone and combination with omeprazole use had area under the curve values of 0.654 and 0.672, respectively. CONCLUSION:In ACS patients, the effect of the CYP2C19 G681A polymorphism on clopidogrel responsiveness, but not omeprazole use, is strong. However, a combination of both factors enhances clopidogrel hyporesponsiveness.

journal_name

Coron Artery Dis

journal_title

Coronary artery disease

authors

Jirungda S,Pussadhamma B,Komanasin N,Senthong V,Leuangwatthananon W

doi

10.1097/MCA.0000000000000808

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

266-272

issue

eissn

0954-6928

issn

1473-5830

journal_volume

pub_type

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Interaction of CYP2C19 G681A polymorphism and omeprazole on clopidogrel responsiveness and impact in patients with acute coronary syndrome.