INS and diabetes mellitus: Of these, 59 (86.8%) were negative for diabetes-specific autoantibodies, 46 (67.6%) had fasting C-peptide level ≥ 0.8 ng/mL, 63 (92.6%) were not on insulin therapy or required insulin daily dose < 0.5 IU/kg along with an optimal glycaemic control (HbA1c < 6.5% or 48 mmol/mol).Thirty-seven patients (6.5%) were diagnosed as MODY.