The amount of a endosome/lysosome-associated apoptosis and autophagy regulator family member 2 when measured in blood serum. The trait is Ontology of Biological Attributes entry OBA_2044817 (level of endosome/lysosome-associated apoptosis and autophagy regulator family member 2 in blood serum). Also known as: blood serum endosome/lysosome-associated apoptosis and autophagy regulator family member 2 amount.