MYOM2 and thrombotic thrombocytopenic purpura: Malignancies; autoimmune disorders; infectious disorders; polyneuropathy, organomegaly, endocrinopathy, M-protein, skin change -syndrome; immunoglobulin G4 (IgG4)-related disease; hepatic cirrhosis; and thrombotic thrombocytopenic purpura (TTP) /hemolytic uremic syndrome must be excluded.