CDKN2D/TBL1X protein level ratio in blood (Ontology of Biological Attributes id OBA_2054238) 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 F-box-like/WD repeat-containing protein TBL1X (human) in blood. Also known as: the ratio of amount of cyclin-dependent kinase 4 inhibitor D (human) in blood to amount of F-box-like/WD repeat-containing protein TBL1X (human) in blood.