Previous studies have found that even after treatingwith clopidogrel, a P2Y12 inhibitor, high levels of PAR-ADP can persist [13, 14].This is concerning because it is an independent predictor of ischemic events suchas stent thrombosis and myocardial infarction one year after the initial PCI,despite the low risk of bleeding [13, 14]. Here, P2RY12 is linked to myocardial infarction.