A compound attribute that is the ratio of amount of cyclin-dependent kinase inhibitor 1 (human) in blood to amount of TBC1 domain family member 23 (human) in blood. The trait is OBA_2055448 (CDKN1A/TBC1D23 protein level ratio in blood). Also known as: the ratio of amount of cyclin-dependent kinase inhibitor 1 (human) in blood to amount of TBC1 domain family member 23 (human) in blood.