TPO and celiac disease: Patients with autoimmune diabetes also show the presence of antibodies related to the coincidence of other autoimmune diseases: 20% have anti-thyroid peroxidase (anti-TPO) and/or anti-thyroglobulin (anti-TPO) antibodies, 11% have antibodies evidencing the presence of coeliac disease (antigliadin anti-DGP, anti- tissue transglutaminase TG, anti-endomysial EMA), 2% have anti-adrenal antibodies (a marker of Addison disease), 1% have antibodies active against parietal cells (markers of autoimmune gastric mucositis) [93].