Clinical and Molecular Characterization of Children with Neonatal Diabetes Mellitus at a Tertiary Care Center in Northern India.

OBJECTIVE To study the genetic mutations and clinical profile in children with neonatal diabetes mellitus. METHODS Genetic evaluation, clinical management and follow-up of infants with neonatal diabetes. RESULTS Eleven infants were studied of which eight had permanent neonatal diabetes. Median age at presentation was 8 weeks and mean (SD) birth weight was 2.4 (0.5) kg. Pathogenic genetic mutations were identified in 7 (63.6%) children; 3 infants with mutations in KCNJ11 gene and 1 in ABCC8 were switched to oral sulfonylureas; 2 infants had mutations in INS and 1 in ZFP57. CONCLUSION Neonatal diabetes mellitus is a heterogeneous disorder. Identification of genetic cause guides clinical management.