A compound attribute that is the ratio of amount of synaptosomal-associated protein 29 (human) in blood to amount of sorting nexin-9 (human) in blood. The trait is OBA_2055661 (SNAP29/SNX9 protein level ratio in blood). Also known as: the ratio of amount of synaptosomal-associated protein 29 (human) in blood to amount of sorting nexin-9 (human) in blood.