PMM2 mutation causes PKD and hyperinsulinism

Polycystic Kidney Disease with Hyperinsulinemic Hypoglycemia Caused by a Promoter Mutation in Phosphomannomutase 2.

Hyperinsulinemic hypoglycemia (HI) and congenital polycystic kidney disease (PKD) are rare, genetically heterogeneous disorders. The co-occurrence of these disorders (HIPKD) in 17 children from 11 unrelated families suggested an unrecognized genetic disorder. Whole-genome linkage analysis in five informative families identified a single significant locus on chromosome 16p13.2 (logarithm of odds...

Congenital Hyperinsulinism and Glucose Hypersensitivity in Homozygous and Heterozygous Carriers of Kir6.2 (KCNJ11) Mutation V290M Mutation

OBJECTIVE The ATP-sensitive K(+) channel (K(ATP)) controls insulin secretion from the islet. Gain- or loss-of-function mutations in channel subunits underlie human neonatal diabetes and congenital hyperinsulinism (HI), respectively. In this study, we sought to identify the mechanistic basis of K(ATP)-induced HI in two probands and to characterize the clinical course. RESEARCH DESIGN AND METHO...

Diazoxide-unresponsive congenital hyperinsulinism associated with ABCC8 nonsense mutation

Case presentation A baby boy with birth weight of 2.4kg at 35 weeks was born via Caesarian section. The boy was allowed feeding on demands, however he had the first onset of hypoglycemia at 2 hours of life. His blood sugar ranged from low reading to 2.5 mmol/L. The patient was treated with boluses of intravenous dextrose D10% followed by maintenance dextrose with its increasing strength in orde...

A Novel Intragenic SLC16A1 Mutation Associated With Congenital Hyperinsulinism

Paternally inherited ABCC8 mutation causing diffuse congenital hyperinsulinism

BACKGROUND Congenital hyperinsulinism (CHI) is a rare genetic disorder characterised by inappropriate insulin secretion in the face of severe hypoglycaemia. There are two histological subtypes of CHI namely diffuse and focal. Diffuse CHI is most common due to recessive mutations in ABCC8/KCNJ11 (which encode the SUR/KIR6.2 components of the pancreatic β-cell KATP channel) whereas focal CHI is d...