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 x 10−199), and thrombosis ORrs505922 1.33, p = 2.2 x10-265.