CDKN2D/CHMP1A protein level ratio in blood (OBA_2055453) can be described as follows. A compound attribute that is the ratio of amount of cyclin-dependent kinase 4 inhibitor D (human) in blood to amount of charged multivesicular body protein 1a (human) in blood. Also known as: the ratio of amount of cyclin-dependent kinase 4 inhibitor D (human) in blood to amount of charged multivesicular body protein 1a (human) in blood.