Correlation P2Y12 Genetic Polymorphism As Risk Factor of Clopidogrel Resistance in Indonesian Stroke Patients

Rakhmad Hidayat,1– 3 Al Rasyid,2,3 Salim Harris,2,3 Alida Harahap,2 Herqutanto,2 Melva Louisa,2 Erlin Listiyaningsih,4 Aldy Safruddin Rambe,5 Tonny Loho6 1Doctoral Program in Medical Sciences Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia; 2Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia; 3Dr. Cipto Mangunkusumo Hospital, Jakarta, Indonesia; 4Harapan Kita Hospital, Jakarta, Indonesia; 5Sumatera Utara University, Medan, Indonesia; 6Faculty of Medicine and Health Science, Kristen Krida Wacana University, Jakarta, IndonesiaCorrespondence: Rakhmad Hidayat, Tel +62 813 88756299, Email rhidayat.md@gmail.comBackground: Stroke is one of the highest causes of disability and mortality in several countries worldwide. Secondary prevention is important in the management of stroke. Clopidogrel is widely used in Asia as secondary prevention for ischemic stroke, even though several studies in Western show limited data related to clopidogrel resistance in Asia. This study aims to determine the correlation between P2Y12 genetic polymorphism and clopidogrel resistance in Indonesia.Methods: This study was conducted on one-year duration, the subjects were chosen through the consecutive sampling method, all subjects were examined for genetics and resistance to clopidogrel. The data were analyzed through statistical analysis, a bivariate analysis was conducted to determine the correlation between several variables and the resistance variable. This study employed resistance diagnostic methods with VerifyNow. Polymorphism of receptor P2Y12 was tested with the Polymerase Chain Reaction method (PCR) and analysis of restriction fragment length polymorphism (RFLP). The genes tested in this study were G52T and C34T.Results: The number of participants in this study was 112. Examination of gene P2Y12 showed that the majority was homozygote, wild-type C34T allele (67%), and G52T (66.1%). There was no significant correlation between clopidogrel resistance and gene G52T