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DOI: 10.1055/s-0043-1764457
Successful Treatment of Congenital Hyperinsulinism Due to KJNJ11 Gene Mutation with Long-Acting Release Octreotide: A Case Report from the Arab Region
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Abstract
Congenital hyperinsulinism is a rare hereditary condition that is caused by various gene mutations related to the function of the pancreatic β-cells. It is characterized by dysregulation of insulin secretion leading to profound and recurrent hypoglycemia. Its clinical presentation, histology, response to treatment, and underlying genetic defects are variable making it a heterogeneous condition. Pancreatectomy is indicated in diazoxide un-responsive cases. However, surgical treatment is associated with the possibility of persistent hypoglycemia and iatrogenic diabetes. We report a 3 months old girl who presented with hyperinsulinemic hypoglycemia. She was born to consanguineous parents and had a history of four neonatal deaths in siblings. Whole exome sequencing detected a KCNJ11 variant c.350_352del p.(Phe117del) in a homozygous state. Pancreatic scan (positron emission tomography/computed tomography) showed a diffusely increased radioisotope uptake in the head and tail of the pancreas. She was resistant to diazoxide and nifedipine and was shifted to octreotide treatment through multiple daily subcutaneous injections initially. Treatment was changed to monthly depot injection of octreotide that resulted in euglycemia. She kept a normal rate of growth, insulin-like growth factor-1, and liver function. This case is an example of an alternative effective medical therapy that avoids major surgical intervention and prevents long-term complication of recurrent hypoglycemia and iatrogenic diabetes resulting after surgery.
Author Contributions
G.M.H. and A.Al-H. are the intensive care consultants under whom the patient was attended. They followed the patient up and provided detailed information on her progress. M.E. wrote a draft for the manuscript and provided the figures. I.S. is the surgeon who was involved in her care and led discussion over surgical treatment. A.D. advised on the medical treatment, wrote the final manuscript, liaised between authors, and submitted the article. All coauthors reviewed the submitted manuscript.
Publication History
Article published online:
05 April 2023
© 2023. Gulf Association of Endocrinology and Diabetes (GAED). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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