Clinical and biochemical data were recorded, and serum GAD65 and ZnT8 antibodies were measured by enzyme-linked immunosorbent assay (ELISA).<h4>Results</h4>GAD65 antibody was positive in 21.7% (10/46) of the DM group compared to 11.9% (5/42) of the NGT group (p = 0.265). Here, GAD2 is linked to diabetes mellitus.