SCN1B gene variants in Brugada syndrome

A study of 145 SCN5A-negative patients

Maria Teresa Ricci, Silvia Menegon, Simona Vatrano, Giorgia Mandrile, Natascia Cerrato, Paula Carvalho, Mario De Marchi, Fiorenzo Gaita, Carla Giustetto, Daniela Francesca Giachino

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Brugada syndrome is characterised by a typical ECG with ST segment elevation in the right precordial leads. Individuals with this condition are susceptible to ventricular arrhythmias and sudden cardiac death. The principal gene responsible for this syndrome is SCN5A, which encodes the β-subunit of the Nav1.5 voltage-gated sodium channel. Mutations involving other genes have been increasingly reported, but their contribution to Brugada syndrome has been poorly investigated. Here we focused on the SCN1B gene, which encodes the β 1-subunit of the voltage-gated sodium channel and its soluble β 1b isoform. SCN1B mutations have been associated with Brugada syndrome as well as with other cardiac arrhythmias and familial epilepsy. In this study, we have analysed SCN1B exons (including the alternatively-spliced exon 3A) and 3 2UTR in 145 unrelated SCN5A-negative patients from a single centre. We took special care to report all identified variants (including polymorphisms), following the current nomenclature guidelines and considering both isoforms. We found two known and two novel (and likely deleterious) SCN1B variants. We also found two novel changes with low evidence of pathogenicity. Our findings contribute more evidence regarding the occurrence of SCN1B variants in Brugada syndrome, albeit with a low prevalence, which is in agreement with previous reports.

Original languageEnglish
Article number6470
JournalScientific Reports
Volume4
DOIs
Publication statusPublished - 2014

Fingerprint

Brugada Syndrome
NAV1.5 Voltage-Gated Sodium Channel
Genes
Cardiac Arrhythmias
Exons
Protein Isoforms
Voltage-Gated Sodium Channels
Mutation
Sudden Cardiac Death
Terminology
Virulence
Epilepsy
Electrocardiography
Guidelines

ASJC Scopus subject areas

  • General

Cite this

Ricci, M. T., Menegon, S., Vatrano, S., Mandrile, G., Cerrato, N., Carvalho, P., ... Giachino, D. F. (2014). SCN1B gene variants in Brugada syndrome: A study of 145 SCN5A-negative patients. Scientific Reports, 4, [6470]. https://doi.org/10.1038/srep06470

SCN1B gene variants in Brugada syndrome : A study of 145 SCN5A-negative patients. / Ricci, Maria Teresa; Menegon, Silvia; Vatrano, Simona; Mandrile, Giorgia; Cerrato, Natascia; Carvalho, Paula; De Marchi, Mario; Gaita, Fiorenzo; Giustetto, Carla; Giachino, Daniela Francesca.

In: Scientific Reports, Vol. 4, 6470, 2014.

Research output: Contribution to journalArticle

Ricci, MT, Menegon, S, Vatrano, S, Mandrile, G, Cerrato, N, Carvalho, P, De Marchi, M, Gaita, F, Giustetto, C & Giachino, DF 2014, 'SCN1B gene variants in Brugada syndrome: A study of 145 SCN5A-negative patients', Scientific Reports, vol. 4, 6470. https://doi.org/10.1038/srep06470
Ricci MT, Menegon S, Vatrano S, Mandrile G, Cerrato N, Carvalho P et al. SCN1B gene variants in Brugada syndrome: A study of 145 SCN5A-negative patients. Scientific Reports. 2014;4. 6470. https://doi.org/10.1038/srep06470
Ricci, Maria Teresa ; Menegon, Silvia ; Vatrano, Simona ; Mandrile, Giorgia ; Cerrato, Natascia ; Carvalho, Paula ; De Marchi, Mario ; Gaita, Fiorenzo ; Giustetto, Carla ; Giachino, Daniela Francesca. / SCN1B gene variants in Brugada syndrome : A study of 145 SCN5A-negative patients. In: Scientific Reports. 2014 ; Vol. 4.
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