According to the data from the ROCKET AF study (Prevention of Stroke and Embolism Trial in Atrial Fibrillation), the presence of combined CYP3A4/5 and P-gp inhibitors did not have any impact on safety outcomes such as bleeding events when comparing the rivaroxabanand warfarin groups (Piccini et al., 2016). This evidence concerns the gene PGP and atrial fibrillation.