ABO and deep vein thrombosis: Variants at the ABO locus (rs495828, rs505922) associated with the largest number of phenotypes (nrs495828=53 and nrs505922=59); strongest association with venous embolism, odds ratio (ORrs495828 1.33 (p=1.32 × 10−199), and thrombosis ORrs505922 1.33, p=2.2 × 10−265.