Microangiopathic hemolytic anemia, such as thrombotic thrombocytopenic purpura (TTP), hemolytic uremic syndrome (HUS), and disseminated intravascular coagulation (DIC), is also less likely since the patient has normal platelet count, no renal or neurological abnormality, normal ADAMTS13 activity, and normal coagulation. The gene discussed is ADAMTS13; the disease is congenital thrombotic thrombocytopenic purpura.