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- W2912553913 abstract "Abstract Background Congenital hyperinsulinism (CHI) occurs due to an unregulated insulin secretion from the pancreatic β-cells resulting in hypoglycaemia. Causative mutations in multiple genes have been reported. Phenotypic variability exists both within and between different genetic subgroups. Case presentation A male infant born at 35+6 weeks’ gestation with a birth weight of 4.3 kg [+3.6 standard deviation score (SDS)] had recurrent hypoglycaemic episodes from birth. Biochemical investigations confirmed a diagnosis of CHI. Diazoxide was started and the dose was progressively increased to maintain euglycaemia. His father was slim and had been diagnosed with type 2 diabetes in his 30s. Sequence analysis identified a heterozygous hepatocyte nuclear factor 4 alpha ( HNF4A ) mutation (p.Arg245Pro, c.734G>C) and compound heterozygous ABCC8 mutations (p.Gly92Ser, c.274G>A and p.Ala1185Val, c.3554C>T) in the patient. The p.Ala1185Val ABCC8 mutation was inherited from his unaffected mother and the p.Arg245Pro HNF4A and p.Gly92Ser ABCC8 mutations from his father. All three mutations were predicted to be pathogenic. Identification of the HNF4A mutation in the father established a diagnosis of maturity-onset diabetes of the young (MODY), which enabled medication change resulting in improved glycaemic control. Conclusions We report a rare patient with CHI due to dual genetic aetiology. Although he is currently responsive to the maximum dose of diazoxide, the long-term prognosis remains unclear." @default.
- W2912553913 created "2019-02-21" @default.
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- W2912553913 date "2019-02-07" @default.
- W2912553913 modified "2023-10-18" @default.
- W2912553913 title "A rare case of congenital hyperinsulinism (CHI) due to dual genetic aetiology involving <i>HNF4A</i> and <i>ABCC8</i>" @default.
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- W2912553913 doi "https://doi.org/10.1515/jpem-2018-0389" @default.
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