, Volume 11, Issue 3, pp 193-198
Date: 05 Oct 2010

Permanent neonatal diabetes due to activating mutations in ABCC8 and KCNJ11

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The ATP-sensitive potassium (KATP) channel is composed of two subunits SUR1 and Kir6.2. The channel is key for glucose stimulated insulin release from the pancreatic beta cell. Activating mutations have been identified in the genes encoding these subunits, ABCC8 and KCNJ11, and account for approximately 40% of permanent neonatal diabetes cases. The majority of patients with a KATP mutation present with isolated diabetes however some have presented with the Developmental delay, Epilepsy and Neonatal Diabetes syndrome. This review focuses on mutations in the KATP channel which result in permanent neonatal diabetes, we review the clinical and functional effects as well as the implications for treatment.