A compound attribute that is the ratio of amount of breakpoint cluster region protein (human) in blood to amount of dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide (human) in blood. The trait is BCR/DAPP1 protein level ratio in blood (Ontology of Biological Attributes term OBA_2053236). Also known as: the ratio of amount of breakpoint cluster region protein (human) in blood to amount of dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide (human) in blood.