AIM:Bleeding has emerged as an important outcome in antiplatelet treatment after percutaneous coronary intervention(PCI),but the study on the relationship between genetic variations with inter-patient variability of bleeding is lack,compared to major adverse AIM: Bleeding has emerged as an important outcome in antiplatelet treatment after percutaneous coronary intervention (PCI), but the study on the relationship between genetic variations with inter-patient variability of bleeding is lack, compared to major adverse