A compound attribute that is the ratio of amount of receptor-binding cancer antigen expressed on SiSo cells (human) in blood to amount of peptidyl-prolyl cis-trans isomerase FKBP5 (human) in blood. The trait is OBA_2053198 (EBAG9/FKBP5 protein level ratio in blood). Also known as: the ratio of amount of receptor-binding cancer antigen expressed on SiSo cells (human) in blood to amount of peptidyl-prolyl cis-trans isomerase FKBP5 (human) in blood.