Characterization of Three CYP2C19 Gene Variants by MassARRAY and Point of Care Techniques: Experience from a Czech Centre

Distribution of cytochrome P450 2C19 enzyme gene ( CYP2C19 ) variants affecting metabolism of clopidogrel was determined in 526 Czech patients after percutaneous coronary intervention using MassARRAY genotyping and compared to distribution in other populations of European descent. Fifty-three (10%) patients underwent parallel determination of CYP2C19 genotypes from buccal swabs by a point of care technique with 100% concordance to the main genotyping platform. Observed CYP2C19 genotypes were related to clopidogrel metabolism phenotypes and discussed in population context. Hereby, presented methodologies provide accurate CYP2C19 genotyping results in a relatively short time of one up to 12 h and may, therefore, find the relevant place in the field of genotype-guided antiplatelet therapy.