Early Postnatal Use of Glibenclamide in Permanent Neonatal Diabetes Secondary to Antenatally Diagnosed <b><i>KJCN11</i></b> Mutation
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Published:2022
Issue:5
Volume:95
Page:476-483
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ISSN:1663-2818
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Container-title:Hormone Research in Paediatrics
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language:en
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Short-container-title:Horm Res Paediatr
Author:
Walton-Betancourth Sandra,
Ashford Jennifer,
Beardsall Kathy,
Gooding Nigel,
Gurnell Eleanor M.,
Hendriks Emile,
Hysted Helen,
Lee Jenny,
Thankamony AjayORCID,
Tseretopoulou Xanthippi,
Win Myat,
Williams Rachel M.ORCID
Abstract
<b><i>Introduction:</i></b> Heterozygous activating mutations in <i>KCNJ11</i> cause both permanent and transient neonatal diabetes. A minority of patients also have neurological features. Early genetic diagnosis has important therapeutic implications as treatment with sulfonylurea provides good metabolic control and exerts a protective effect on neuromuscular function. <b><i>Case Presentation:</i></b> A term female infant with normal birth weight (2.73 kg, z-score: −1.69) was admitted to the Neonatal Unit at Addenbrookes Hospital. She had been antenatally diagnosed with KCNJ<i>11</i> mutation-R201C inherited from her glibenclamide-treated mother who continued sulfonylurea treatment throughout pregnancy. A continuous glucose-monitoring system inserted at 20 h of age showed progressive rise of blood glucose concentrations, prompting treatment with glibenclamide on day 2 of life. Initial attempts to treat with an extemporaneous solution of glibenclamide (starting dose 0.2 mg/kg/day) resulted in inconsistent response and significant hypoglycaemia and hyperglycaemia. A licenced liquid formulation of glibenclamide (AMGLIDIA) at a starting dose of 0.05 mg/kg/day was used with stabilization of blood glucose profile within 24 h. Other than a mild transient elevation in transaminase, treatment was well tolerated. At most recent review (age 12 months), the patient remains well with age-appropriate neurodevelopment. Overall glucose control is reasonable with estimated HbA1c of 7.6% (59.9 mmol/mol). <b><i>Conclusion:</i></b> Early postnatal glibenclamide treatment of insulin-naive patients with KATP-dependent neonatal diabetes is safe, provides good metabolic control, and has a potential protective effect on neurological function. The formulation of the medicine needs to be carefully considered in the context of the very small doses required in this age group.
Subject
Endocrinology,Endocrinology, Diabetes and Metabolism,Pediatrics, Perinatology and Child Health
Cited by
2 articles.
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