A compound attribute that is the ratio of amount of GrpE protein homolog 1, mitochondrial (human) in blood to amount of neprilysin (human) in blood. The trait is OBA_2053450 (GRPEL1/MME protein level ratio in blood). Also known as: the ratio of amount of GrpE protein homolog 1, mitochondrial (human) in blood to amount of neprilysin (human) in blood.