CDKN1A/TACC3 protein level ratio in blood (OBA_2055447, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of cyclin-dependent kinase inhibitor 1 (human) in blood to amount of transforming acidic coiled-coil-containing protein 3 (human) in blood. Also known as: the ratio of amount of cyclin-dependent kinase inhibitor 1 (human) in blood to amount of transforming acidic coiled-coil-containing protein 3 (human) in blood.