Furthermore, a higher prevalence of T1D‐specific autoantibodies (zinc transporter 8 (ZnT8) autoantibodies, GAD autoantibodies and insulinoma‐associated protein 2 (IA‐2) autoantibodies) was reported in individuals with AITD compared to healthy controls, also indicating an increased risk for subsequent T1D [67]. This evidence concerns the gene GAD1 and type 1 diabetes mellitus.