P2RY12 and atrial fibrillation: In this analysis, we aimed to compare the efficacy and safety of dual therapy (DT) with a non-vitamin K oral anticoagulant (NOAC) and a P2Y12 inhibitor versus triple therapy (TT) with aspirin, a P2Y12 inhibitor and a Vitamin K antagonist for the treatment of DM patients with co-existing atrial fibrillation (AF) following PCI.