GAD2 and type 1 diabetes mellitus: T1D–type 1 diabetes; T2D–type 2 diabetes; GAD-65 A–glutamic acid decarboxylase-65 autoantibodies; IA2—anti-islet antigen phosphatase; anti- ZnT8—zinc transporter 8; IAA–antibodies against insulin–no data; M–male; F–female; DKA–diabetic ketoacidosis; NOD–new onset diabetes.