A compound attribute that is the ratio of amount of forkhead box protein O1 (human) in blood to amount of F-box-like/WD repeat-containing protein TBL1X (human) in blood. The trait is OBA_2054179 (FOXO1/TBL1X protein level ratio in blood). Also known as: the ratio of amount of forkhead box protein O1 (human) in blood to amount of F-box-like/WD repeat-containing protein TBL1X (human) in blood.