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Concurrent sodium channelopathies and amyotrophic lateral sclerosis supports shared pathogenesis

Franklin, JP; Cooper-Knock, J; Baheerathan, A; Moll, T; Männikkö, R; Heverin, M; Hardiman, O; ... Hanna, MG; + view all (2020) Concurrent sodium channelopathies and amyotrophic lateral sclerosis supports shared pathogenesis. Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration 10.1080/21678421.2020.1786128. (In press). Green open access

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Abstract

Amyotrophic lateral sclerosis (ALS) is an invariably fatal adult-onset neurodegenerative disorder; approximately 10% of ALS is monogenic but all ALS exhibits significant heritability. The skeletal muscle sodium channelopathies are a group of inherited, non-dystrophic ion channel disorders caused by heterozygous point mutations in the SCN4A gene, leading to clinical manifestations of congenital myotonia, paramyotonia, and periodic paralysis syndromes. We provide clinical and genetic evidence of concurrence of these two rare disorders which implies a possible shared underlying pathophysiology in two patients. We then identify an enrichment of ALS-associated mutations in another sodium channel, SCN7A, from whole genome sequencing data of 4495 ALS patients and 1925 controls passing multiple testing correction (67 variants, p = 0.0002, Firth logistic regression). These findings suggest dysfunctional sodium channels may play a role upstream in the pathogenesis of ALS in a subset of patients, potentially opening the door to novel personalized medicine approaches.

Type: Article
Title: Concurrent sodium channelopathies and amyotrophic lateral sclerosis supports shared pathogenesis
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1080/21678421.2020.1786128
Publisher version: https://doi.org/10.1080/21678421.2020.1786128
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Keywords: Genetics, excitotoxicity, risk
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Department of Neuromuscular Diseases
URI: https://discovery.ucl.ac.uk/id/eprint/10105238
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