A compound attribute that is the ratio of amount of islet cell autoantigen 1 (human) in blood to level of Rab GTPase-activating protein 1-like in blood. The trait is Ontology of Biological Attributes entry OBA_2052980 (ICA1/RABGAP1L protein level ratio in blood). Also known as: the ratio of amount of islet cell autoantigen 1 (human) in blood to level of Rab GTPase-activating protein 1-like in blood.