They are also occasionally present in the following: Autoimmune hepatitis Drug-induced hepatitis Other autoimmune disorders, such as connective tissue disorders, myasthenia gravis, autoimmune thyroiditis, Addison disease, and autoimmune hemolytic anemia Antimitochondrial antibodies can help determine the cause of cholestasis because they are usually absent in extrahepatic biliary obstruction and primary sclerosing cholangitis.