A compound attribute that is the ratio of amount of DnaJ homolog subfamily B member 1 (human) in blood to amount of mothers against decapentaplegic homolog 1 (human) in blood. The trait is DNAJB1/SMAD1 protein level ratio in blood (Ontology of Biological Attributes term OBA_2053596). Also known as: the ratio of amount of DnaJ homolog subfamily B member 1 (human) in blood to amount of mothers against decapentaplegic homolog 1 (human) in blood.