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Journals / Journal of Experimental and Clinical Medicine / 2026 / Volume: 38 Issue: 3

Nonsynonymous variations of ion channel-related genes as risk factors in epilepsy

Burcu Biterge Süt(NIGDE OMER HALISDEMIR UNIVERSITY, FACULTY OF MEDICINE)0000-0001-5756-5756
Hayriye Soytürk(ABANT IZZET BAYSAL UNIVERSITY)0000-0002-0000-3768
Pages
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Publication Date
2021-05-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Nonsynonymous substitutions of p.E177A, p.D219N, p.A322D, p.R577Q, p.E282K, p.V831M and p.R1072C were determined as pathogenic, while all mutations resulted in varying degrees of decrease in overall protein stability.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Recurrent seizures are characteristic to epilepsy, which often arise due to increased electrical activity.
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Key Findings & Data:We identified 17 epilepsy-related missense mutations, 11 of which were in ion channel-related genes.
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Conclusion & Impact:Nonsynonymous substitutions of p.E177A, p.D219N, p.A322D, p.R577Q, p.E282K, p.V831M and p.R1072C were determined as pathogenic, while all mutations resulted in varying degrees of decrease in overall protein stability.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Ion channels · missense mutation · epilepsy

Abstract

Recurrent seizures are characteristic to epilepsy, which often arise due to increased electrical activity. Ligand-gated ion channels are considered as key factors in epilepsy as they regulate and maintain neuronal membrane potential via regulating ion transportation. Therefore, this study aims to identify ion channel-related single nucleotide variations that are considered as risk factors in epilepsy and determine their potential effects on pathogenicity, protein stability and structure using in silico methods. For this purpose, ion channel-related mutations linked with epilepsy were retrieved from ClinVar. Pathogenicity scores and protein stability were predicted using FATHMM-XF and MUpro, respectively. Structural alterations were determined via HOPE server. We identified 17 epilepsy-related missense mutations, 11 of which were in ion channel-related genes. Nonsynonymous substitutions of p.E177A, p.D219N, p.A322D, p.R577Q, p.E282K, p.V831M and p.R1072C were determined as pathogenic, while all mutations resulted in varying degrees of decrease in overall protein stability. Furthermore, all variants were annotated with risk for disease and introduction of distinct side chains caused differences in size, charge and hydrophobicity, as well as contact with other proteins and ligands. In conclusion, mutations in ion channel-related genes were previously identified in several genetic association studies while their functional annotations were not addressed. The results of this study provide a functional explanation to the pathogenic effects of ion channel-related gene mutations that are considered as risk factors in epilepsy.

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Cite This Article

Süt, B. B., Soytürk, H. (2021). Nonsynonymous variations of ion channel-related genes as risk factors in epilepsy. Journal of Experimental and Clinical Medicine, Volume: 38 Issue: 3. https://ajindex.com/articles/1423248

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