title: Personalized precision medicine in extreme preterm infants with transient neonatal diabetes mellitus.
abstract: Although hyperglycemia is common in neonates, especially preterm infants, a diagnosis of neonatal diabetes mellitus (NDM) is rarely made. NDM can be permanent (45%), transient (45%) or syndromic (10%). Of the 95% of identifiable mutations for NDM, methylation defects in 6q24, KCNJ11, ABCC8, and INS account for the majority. Two cases of transient NDM in extremely preterm, 24 weeks' gestational age (GA) triplets, due to a missense mutation c.685G>A in the KCNJ11 gene are presented. Both patients were successfully transitioned from insulin to Glyburide (Glibenclamide) at 2 months of age. Comprehensive genetic testing with targeted next-generation sequencing and 6q24 methylation analysis helps identify monogenic diabetes early, thereby improving metabolic and glycemic control when patients with potassium channel mutations are started on sulfonylurea (SU) treatment.
authors.affiliation: Division of Neonatal-Perinatal Medicine and Developmental Biology, Department of Pediatrics, University of Arizona, College of Medicine, PO Box 245073, 1501 N Campbell Avenue, Tucson, AZ 85724.
authors.forename: Ranjit I
authors.initials: RI
authors.lastname: Kylat
authors.affiliation: Department of Pediatrics, The University of Arizona, Tucson, AZ.
authors.forename: Rajan
authors.initials: R
authors.lastname: Senguttuvan
authors.affiliation: Department of Pediatrics, The University of Arizona, Tucson, AZ.
authors.forename: Mohammed Y
authors.initials: MY
authors.lastname: Bader
mesh_terms: D000328:Adult; D001786:Blood Glucose; D003920:Diabetes Mellitus / Q000188:drug therapy* / Q000235:genetics; D005260:Female; D005820:Genetic Testing; D005905:Glyburide / Q000627:therapeutic use; D059014:High-Throughput Nucleotide Sequencing; D006801:Humans; D007004:Hypoglycemic Agents / Q000627:therapeutic use*; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000188:drug therapy* / Q000235:genetics; D007234:Infant, Premature; D007328:Insulin / Q000627:therapeutic use; D008297:Male; D009154:Mutation; D024661:Potassium Channels, Inwardly Rectifying / Q000235:genetics*; D057285:Precision Medicine; D055815:Young Adult; D000099161:Kcnj11 Channel
chemical_list: D001786:Blood Glucose; D005905:Glyburide; D007004:Hypoglycemic Agents; D007328:Insulin; D024661:Potassium Channels, Inwardly Rectifying; D000099161:Kcnj11 Channel
keywords: 6q24; KCNJ11; permanent diabetes mellitus; transient neonatal diabetes mellitus