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Identification of a Loss-of-Function Mutation in the Context of Glutaminase Deficiency and Neonatal Epileptic Encephalopathy

Identification of a Loss-of-Function Mutation in the Context of Glutaminase Deficiency and... Key PointsQuestionWhat is the consequence of glutaminase deficiency? FindingsThis study of 2 families with 4 affected children used exome sequencing followed by functional analysis to show that biallelic loss-of-function pathogenic variants in the glutaminase gene GLS lead to early neonatal refractory seizures, respiratory failure, structural brain abnormalities and cerebral edema, and death within weeks after birth. MeaningBased on these results, it is hypothesized that glutaminase deficiency disturbs glutamine-glutamate homeostasis and leads to neonatal lethal epileptic encephalopathy and respiratory insufficiency; this emphasizes its importance for respiratory regulation, neurotransmission, and survival. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA Neurology American Medical Association

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References (51)

Publisher
American Medical Association
Copyright
Copyright 2018 American Medical Association. All Rights Reserved.
ISSN
2168-6149
eISSN
2168-6157
DOI
10.1001/jamaneurol.2018.2941
Publisher site
See Article on Publisher Site

Abstract

Key PointsQuestionWhat is the consequence of glutaminase deficiency? FindingsThis study of 2 families with 4 affected children used exome sequencing followed by functional analysis to show that biallelic loss-of-function pathogenic variants in the glutaminase gene GLS lead to early neonatal refractory seizures, respiratory failure, structural brain abnormalities and cerebral edema, and death within weeks after birth. MeaningBased on these results, it is hypothesized that glutaminase deficiency disturbs glutamine-glutamate homeostasis and leads to neonatal lethal epileptic encephalopathy and respiratory insufficiency; this emphasizes its importance for respiratory regulation, neurotransmission, and survival.

Journal

JAMA NeurologyAmerican Medical Association

Published: Mar 21, 2019

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