To research CYP2C19 polymorphism and effects of CYP2C19 polymorphisms on clopidogrel response in ischemic stroke patients. Subjects and methods: A prospective and cross-sectional analysis was implemented among stroke patients in a 103 Military Hospital, from the beginning of 2017 to August 2018. | CYP2C19 polymorphisms and effects of polymorphic CYP2C19 on clopidogrel response in Vietnamese stroke patients