A compound attribute that is the ratio of amount of B-cell scaffold protein with ankyrin repeats (human) in blood to amount of interleukin-1 receptor-associated kinase 4 (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2053579 (BANK1/IRAK4 protein level ratio in blood). Also known as: the ratio of amount of B-cell scaffold protein with ankyrin repeats (human) in blood to amount of interleukin-1 receptor-associated kinase 4 (human) in blood.