Hyperinsulinemic Hypoglycemia in Beckwith-Wiedemann Syndrome due to Defects in the Function of Pancreatic β-Cell Adenosine Triphosphate-Sensitive Potassium Channels

Abstract

In this novel case of BWS with mosaic paternal uniparental disomy for 11p15, persistent hyperinsulinism was due to abnormalities in K(ATP) channels of the pancreatic beta-cell. The mechanism/s by which mosaic paternal uniparental disomy for 11p15 causes a trafficking defect in the SUR1 protein of the K(ATP) channel remains to be elucidated.