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NM_000335.5(SCN5A):c.3953G>T (p.Gly1318Val) AND Brugada syndrome

Germline classification:
Likely pathogenic (3 submissions)
Last evaluated:
Nov 28, 2023
Review status:
2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV000058616.23

Allele description [Variation Report for NM_000335.5(SCN5A):c.3953G>T (p.Gly1318Val)]

NM_000335.5(SCN5A):c.3953G>T (p.Gly1318Val)

Gene:
SCN5A:sodium voltage-gated channel alpha subunit 5 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
3p22.2
Genomic location:
Preferred name:
NM_000335.5(SCN5A):c.3953G>T (p.Gly1318Val)
HGVS:
  • NC_000003.12:g.38562422C>A
  • NG_008934.1:g.92251G>T
  • NM_000335.5:c.3953G>TMANE SELECT
  • NM_001099404.2:c.3956G>T
  • NM_001099405.2:c.3956G>T
  • NM_001160160.2:c.3953G>T
  • NM_001160161.2:c.3794G>T
  • NM_001354701.2:c.3953G>T
  • NM_198056.3:c.3956G>T
  • NP_000326.2:p.Gly1318Val
  • NP_001092874.1:p.Gly1319Val
  • NP_001092875.1:p.Gly1319Val
  • NP_001153632.1:p.Gly1318Val
  • NP_001153633.1:p.Gly1265Val
  • NP_001341630.1:p.Gly1318Val
  • NP_932173.1:p.Gly1319Val
  • NP_932173.1:p.Gly1319Val
  • LRG_289t1:c.3956G>T
  • LRG_289:g.92251G>T
  • LRG_289p1:p.Gly1319Val
  • NC_000003.11:g.38603913C>A
  • NM_198056.2:c.3956G>T
  • Q14524:p.Gly1319Val
Protein change:
G1265V
Links:
UniProtKB: Q14524#VAR_026375; dbSNP: rs199473220
NCBI 1000 Genomes Browser:
rs199473220
Molecular consequence:
  • NM_000335.5:c.3953G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001099404.2:c.3956G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001099405.2:c.3956G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001160160.2:c.3953G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001160161.2:c.3794G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001354701.2:c.3953G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_198056.3:c.3956G>T - missense variant - [Sequence Ontology: SO:0001583]
Observations:
3

Condition(s)

Name:
Brugada syndrome
Synonyms:
Sudden unexpected nocturnal death syndrome; Sudden unexplained nocturnal death syndrome; Sudden Unexplained Death Syndrome; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0015263; MedGen: C1142166; OMIM: PS601144

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000090136Cardiovascular Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust
no classification provided
not providedgermlineliterature only

PubMed (4)
[See all records that cite these PMIDs]

SCV000710928Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
criteria provided, single submitter

(LMM Criteria)
Likely pathogenic
(Jul 31, 2018)
germlineclinical testing

PubMed (10)
[See all records that cite these PMIDs]

SCV004843398All of Us Research Program, National Institutes of Health
criteria provided, single submitter

(ACMG Guidelines, 2015)
Likely Pathogenic
(Nov 28, 2023)
germlineclinical testing

PubMed (13)
[See all records that cite these PMIDs]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlinenot provided33not providednot providednot providedclinical testing
not providedgermlineunknown3not providednot provided108544not providedclinical testing, literature only

Citations

PubMed

Paralogous annotation of disease-causing variants in long QT syndrome genes.

Ware JS, Walsh R, Cunningham F, Birney E, Cook SA.

Hum Mutat. 2012 Aug;33(8):1188-1191. doi: 10.1002/humu.22114. Epub 2012 Jun 7.

PubMed [citation]
PMID:
22581653
PMCID:
PMC4640174

Mortality of inherited arrhythmia syndromes: insight into their natural history.

Nannenberg EA, Sijbrands EJ, Dijksman LM, Alders M, van Tintelen JP, Birnie M, van Langen IM, Wilde AA.

Circ Cardiovasc Genet. 2012 Apr 1;5(2):183-9. doi: 10.1161/CIRCGENETICS.111.961102. Epub 2012 Feb 28.

PubMed [citation]
PMID:
22373669
See all PubMed Citations (19)

Details of each submission

From Cardiovascular Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust, SCV000090136.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedliterature only PubMed (4)

Description

This variant has been reported as associated with Brugada syndrome in the following publications (PMID:12106943;PMID:17854786;PMID:20129283). This is a literature report, and does not necessarily reflect the clinical interpretation of the Imperial College / Royal Brompton Cardiovascular Genetics laboratory.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine, SCV000710928.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided3not providednot providedclinical testing PubMed (10)

Description

proposed classification - variant undergoing re-assessment, contact laboratory

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlinenot providednot providednot providednot provided3not provided3not provided

From All of Us Research Program, National Institutes of Health, SCV004843398.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided3not providednot providedclinical testing PubMed (13)

Description

This missense variant replaces glycine with valine at codon 1319 of the SCN5A protein. This variant is also known as p.Gly1318Val in the literature based on a different NM_000335 transcript. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). This variant is found within a highly conserved region of the transmembrane domain III. Rare nontruncating variants in this region have been shown to be significantly overrepresented in individuals with long QT syndrome (PMID: 32893267). Functional studies have shown that this variant causes a significant reduction in sodium current (PMID: 17854786, 19251209). This variant has been reported in over ten unrelated individuals affected with Brugada syndrome (PMID: 12106943, 17854786, 19251209, 21273195, 24951569, 29759671, 30847666, 32893267, 36516610, ClinVar SCV000291807.6), in an individual affected with long QT syndrome (PMID: 32893267), and in two individuals affected with progressive cardiac conduction disorders (PMID: 30059973). This variant has been shown to segregates with disease in four first-degree relatives from two families affected with cardiac conduction disease and cardiomypoathy (PMID: 25179549, 28790152). This variant has been identified in 11/269654 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Based on the available evidence, this variant is classified as Likely Pathogenic.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknown108544not providednot provided3not providednot providednot provided

Last Updated: Oct 8, 2024