rs193922727
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Variant summary
Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP6BS1BS2
The NM_000335.5(SCN5A):c.630G>A(p.Val210Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000854 in 1,609,044 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Genomes: 𝑓 0.00060 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00088 ( 4 hom. )
Consequence
SCN5A
NM_000335.5 synonymous
NM_000335.5 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 2.02
Genes affected
SCN5A (HGNC:10593): (sodium voltage-gated channel alpha subunit 5) The protein encoded by this gene is an integral membrane protein and tetrodotoxin-resistant voltage-gated sodium channel subunit. This protein is found primarily in cardiac muscle and is responsible for the initial upstroke of the action potential in an electrocardiogram. Defects in this gene have been associated with long QT syndrome type 3 (LQT3), atrial fibrillation, cardiomyopathy, and Brugada syndrome 1, all autosomal dominant cardiac diseases. Alternative splicing results in several transcript variants encoding different isoforms. [provided by RefSeq, May 2022]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -9 ACMG points.
BP6
Variant 3-38613816-C-T is Benign according to our data. Variant chr3-38613816-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 36766.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=6, Benign=3, Likely_benign=6}. Variant chr3-38613816-C-T is described in Lovd as [Benign]. Variant chr3-38613816-C-T is described in Lovd as [Likely_benign].
BS1
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000605 (92/152172) while in subpopulation NFE AF= 0.000985 (67/68006). AF 95% confidence interval is 0.000795. There are 0 homozygotes in gnomad4. There are 47 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High Homozygotes in GnomAdExome4 at 4 SD gene
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| SCN5A | ENST00000423572.7 | c.630G>A | p.Val210Val | synonymous_variant | Exon 6 of 28 | 1 | NM_000335.5 | ENSP00000398266.2 | ||
| SCN5A | ENST00000413689.6 | c.703+159G>A | intron_variant | Intron 6 of 27 | 5 | NM_001099404.2 | ENSP00000410257.1 |
Frequencies
GnomAD3 genomes 0.000605 AC: 92AN: 152054Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.000552 AC: 133AN: 240958Hom.: 0 AF XY: 0.000606 AC XY: 79AN XY: 130468
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GnomAD4 exome AF: 0.000880 AC: 1282AN: 1456872Hom.: 4 Cov.: 30 AF XY: 0.000892 AC XY: 646AN XY: 724240
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GnomAD4 genome 0.000605 AC: 92AN: 152172Hom.: 0 Cov.: 33 AF XY: 0.000632 AC XY: 47AN XY: 74390
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:6Benign:15
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not provided Benign:6
| Benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Feb 03, 2025 | - - |
| Benign, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Oct 20, 2022 | - - |
| Likely benign, no assertion criteria provided | clinical testing | Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen | - | - - |
| Likely benign, no assertion criteria provided | clinical testing | Genome Diagnostics Laboratory, University Medical Center Utrecht | - | - - |
| Likely benign, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
| Likely benign, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
not specified Benign:3
| Benign, criteria provided, single submitter | clinical testing | GeneDx | Mar 17, 2015 | This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. - |
| Likely benign, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | May 27, 2015 | p.Val210Val in exon 6 of SCN5A: This variant is not expected to have clinical si gnificance because it does not alter an amino acid residue and is not located wi thin the splice consensus sequence. It has been identified in 0.1% (42/41192) of European chromosomes from by the Exome Aggregation Consortium (ExAC, http://exa c.broadinstitute.org/; dbSNP rs193922727). - |
| Benign, no assertion criteria provided | clinical testing | Clinical Genetics, Academic Medical Center | - | - - |
Brugada syndrome 1 Uncertain:2
| Uncertain significance, criteria provided, single submitter | in vitro;research | Roden Lab, Vanderbilt University Medical Center | - | We classified this variant using data from the calibrated functional assay 'ParSE-seq' (PMID: 37732247), population data, and in silico data within the ACMG v3 framework (PMID: 25741868)The SCN5A variant, 3-38613816-C-T was evaluated for association with the loss-of-function condition Brugada Syndrome.This Variant had an AF of 0.000605048 in gnomAD v3The in silico predictor SpliceAI scored the variant as 0.27; normal <0.2, likely damaging >0.5.Using the functional RNA-splicing assay, ParSE-seq, the variant was evaluated to have a strong negative impact on splicing (PS3_strong) following the Brnich et al. calibration framework (PMID: 31892348). In aggregate, we therefore classify this variant as VUS using these collective data. - |
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | May 31, 2018 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
Cardiomyopathy Benign:2
| Likely benign, criteria provided, single submitter | clinical testing | CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario | Feb 21, 2023 | - - |
| Benign, no assertion criteria provided | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Jun 12, 2015 | - - |
Cardiac arrhythmia Benign:2
| Likely benign, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Feb 05, 2024 | - - |
| Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Aug 27, 2018 | - - |
Ventricular fibrillation, paroxysmal familial, type 1 Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | May 31, 2018 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
Dilated cardiomyopathy 1E Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | May 31, 2018 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
Sick sinus syndrome 1 Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | May 31, 2018 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
Progressive familial heart block, type 1A Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | May 31, 2018 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. - |
Cardiovascular phenotype Benign:1
| Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Oct 25, 2016 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Long QT syndrome 3 Benign:1
| Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | May 31, 2018 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. - |
Computational scores
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Name
Calibrated prediction
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AL_spliceai
Position offset: 18
Find out detailed SpliceAI scores and Pangolin per-transcript scores at