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Permanent Neonatal Diabetes in a Patient with a KCNJ11/Q52R Mutation Accompanied by Intermittent Hypoglycemia and Liver Failure

Author(s): Shaw NatalieD | Majzoub JosephA

Journal: International Journal of Pediatric Endocrinology
ISSN 1687-9848

Volume: 2009;
Issue: 1;
Start page: 453240;
Date: 2009;
Original page

The most common monogenic cause of neonatal diabetes is mutation in KCNJ11, which encodes a potassium channel in pancreatic beta cells. Some mutations in this gene, including Q52R, have been described in association with neurological deficits, but never with hepatic involvement. We report the second case of neonatal diabetes in a patient with a KCNJ11 Q52R mutation. This patient's clinical course did not include obvious neurological deficits despite the presence of prematurity, but did include transient hyperbilirubinemia, and recurrent hypoglycemia. The phenotypic spectrum of KCNJ11 mutations is variable and is likely influenced by additional genetic and environmental factors.
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