TGM2 and Autoimmunity: Screening for autoimmunity was performed, measuring anti-ovarian antibodies, anti-thyroid antibodies (anti-thyroperoxydase (TPO) and anti-thyroglobulin (TG) antibodies), anti-adrenal antibodies, anti-gastric parietal cells antibodies and antitissue transglutaminase (tTG) antibodies.