A compound attribute that is the ratio of amount of breakpoint cluster region protein (human) in blood to amount of integrin beta-1-binding protein 2 (human) in blood. The trait is OBA_2053243 (BCR/ITGB1BP2 protein level ratio in blood). Also known as: the ratio of amount of breakpoint cluster region protein (human) in blood to amount of integrin beta-1-binding protein 2 (human) in blood.