Abstract:Objective To explore the application prospect of drug-related genetic polymorphisms in antiplatelet therapy in cerebral infarction patients.Methods The 298 cerebral infarction patients treated in our hospital from January 2019 to March 2020 were selected. All patients were given clopidogrel and aspirin within 24 hours after disease onset. The basic information of the patients was collected, and cytochrome P450 2C19 (CYP2C19), prostaglandin-endoperoxide synthase 1 (PTGS1) and glycoprotein Ib α polypeptide (GP1BA) gene polymorphisms were detected. After 14 days of treatment, the patients were divided into the good prognosis group and the poor prognosis group by Modified Rankin Scale (mRS) score.Results Among the cerebral infarction patients, there were 156 extensive metabolizers (52.35%), 86 intermediate metabolizers (28.86%) and 56 poor metabolizers (18.79%) for clopidogrel. Besides, 290 of them were aspirin-sensitive (97.32%), 5 of them were semi-responders (1.68%) and 3 of them were aspirin-resistant (1.00%). In the good prognosis group, there were 140 extensive metabolizers (59.07%), 67 intermediate metabolizers (28.27%) and 30 poor metabolizers (12.66%) for clopidogrel, while there were 16 extensive metabolizers (26.23%), 19 intermediate metabolizers (31.15%) and 26 poor metabolizers (42.62%) for clopidogrel in the poor prognosis group, with a significant difference between the two groups (P < 0.05). In the good prognosis group, 234 cases were aspirin-sensitive (98.74%), 2 semi-responders (0.84%) and 1 aspirin-resistant (0.42%). However, in the poor prognosis group, 56 cases were aspirin-sensitive (91.80%), 3 semi-responders (4.92%) and 2 aspirin-resistant (3.28%), which was significantly different in comparison to the good prognosis group (P < 0.05).Conclusions The CYP2C19, PTGS1 and GP1BA gene polymorphisms have an effect on the prognosis of cerebral infarction patients in antiplatelet therapy with clopidogrel and aspirin. Thus, the detection of CYP2C19, PTGS1 and GP1BA gene polymorphisms is of great significance in predicting the prognosis of cerebral infarction patients undergoing antiplatelet therapy.