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Next-Generation Sequencing Reveals a Novel Pathogenic Variant in the Atm Gene Publisher Pubmed



Pourahmadiyan A1 ; Alipour P1 ; Golchin N2 ; Tabatabaiefar MA3, 4
Authors

Source: International Journal of Neuroscience Published:2022


Abstract

Introduction: Ataxia telangiectasia (A-T) is a rare autosomal recessive, multisystemic disease. Patients with the A-T syndrome present a broad spectrum of disease phenotypes. The ATM (ataxia telangiectasia mutated) gene, the only causative gene for A-T. Method: A patient of Persian origin presenting with typical A-T was referred to our genetics centre for specialized genetic counselling and testing. Targeted next-generation sequencing (NGS) was applied. Sanger sequencing was used to confirm the candidate variant. Modelling was performed using the SWISS-MODEL server. Results: A homozygous stop-gain variant c.829G > T (p.E277*) was found in the ATM gene. This variant was confirmed by Sanger sequencing and modelling of native structure, and truncated structure was performed. Conclusion: To date, very few pathogenic variants of the ATM gene have been reported from the Iranian population. The finding has implications in molecular diagnostic for A-T in Iran. © 2021 Informa UK Limited, trading as Taylor & Francis Group.
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