TAILIEUCHUNG - Rapid real time pcr for Cyp2c19 and itgb3 gene detection to optimize the use of clopidogrel and aspirin for pci stent graft patients

The response to clopidogrel and aspirin in patients is known to be highly variable as bioavailability is dependent upon the conversion of the prodrug into the pharmacologically active clopidogrel and aspirin. Blood samples were collected from consenting patients after they were on the maintenance dose of anti-platelet therapy. The real-time PCR method was developed for the identification of the specific mutations in the CYP2C19 gene (CYP2C19 *2 and CYP2C19*3) and ITGB3 gene (PlA1/ A2). | JOURNAL OF MEDICAL RESEARCH RAPID REAL-TIME PCR FOR CYP2C19 AND ITGB3 GENE DETECTION TO OPTIMIZE THE USE OF CLOPIDOGREL AND ASPIRIN FOR PCI STENT GRAFT PATIENTS Nguyen Thi Trang, Luong Thi Lan Anh , Vu To Giang , Do Duc Huy, Nguyen Thi Minh Ngoc, Department of Biomedical and Genetics, Hanoi Medical University, Hanoi, Vietnam The response to clopidogrel and aspirin in patients is known to be highly variable as bioavailability is dependent upon the conversion of the prodrug into the pharmacologically active clopidogrel and aspirin. Blood samples were collected from consenting patients after they were on the maintenance dose of anti-platelet therapy. The real-time PCR method was developed for the identification of the specific mutations in the CYP2C19 gene (CYP2C19 *2 and CYP2C19*3) and ITGB3 gene (PlA1/ A2). The real-time PCR method using SYBR green was validated against the Sanger’s sequencing method described previously and used to determine the frequency and type of mutations of postPCI patients. The results indicated that patients carrying any CYP2C19 loss-of-function alleles had a higher event rate () of the study group: 10% homozygous and 35% heterozygous (CYP2C19 *2); heterozygous carriers (CYP2C19*3). Carriers of the Leu33Pro polymorphism of ITGB3 gene accounted for approximately 10% of the study population. In conclusion, a genotyping variant of CYP2C19 and ITGB3 provides an excellent opportunity for optimizing the anti-platelet regimen post-PCI. Keywords: coronary artery disease, CYP2C19, clopidogrel, ITGB3, aspirin resistance I. INTRODUCTION Coronary artery disease (CAD) is the most common type of heart disease. It is the leading cause of death in the world in both men and women [1]. In Vietnam, coronary artery disease has been increasing rapidly in recent years. Percutaneous coronary intervention (PCI) is one of the most common medical procedures performed for treatment of CAD. Corresponding author: Nguyen Thi Trang, Department of Biomedical

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