A compound attribute that is the ratio of amount of interleukin-1 receptor-associated kinase 4 (human) in blood to amount of dual specificity mitogen-activated protein kinase kinase 6 (human) in blood. The trait is IRAK4/MAP2K6 protein level ratio in blood (OBA_2055526). Also known as: the ratio of amount of interleukin-1 receptor-associated kinase 4 (human) in blood to amount of dual specificity mitogen-activated protein kinase kinase 6 (human) in blood.