A compound attribute that is the ratio of amount of serine protease HTRA2, mitochondrial (human) in blood to amount of synaptosomal-associated protein 29 (human) in blood. The trait is OBA_2052968 (HTRA2/SNAP29 protein level ratio in blood). Also known as: the ratio of amount of serine protease HTRA2, mitochondrial (human) in blood to amount of synaptosomal-associated protein 29 (human) in blood.