rs753835985
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Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6BP7
The NM_001099404.2(SCN5A):c.1821C>T(p.Gly607=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000148 in 1,557,956 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000014 ( 0 hom. )
Consequence
SCN5A
NM_001099404.2 synonymous
NM_001099404.2 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: -1.33
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 Likely_benign. Variant got -4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.76).
BP6
?
Variant 3-38603781-G-A is Benign according to our data. Variant chr3-38603781-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 201416.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=1, Uncertain_significance=1}.
BP7
?
Synonymous conserved (PhyloP=-1.33 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SCN5A | NM_001099404.2 | c.1821C>T | p.Gly607= | synonymous_variant | 12/28 | ENST00000413689.6 | |
SCN5A | NM_000335.5 | c.1821C>T | p.Gly607= | synonymous_variant | 12/28 | ENST00000423572.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SCN5A | ENST00000413689.6 | c.1821C>T | p.Gly607= | synonymous_variant | 12/28 | 5 | NM_001099404.2 | P4 | |
SCN5A | ENST00000423572.7 | c.1821C>T | p.Gly607= | synonymous_variant | 12/28 | 1 | NM_000335.5 | A1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000197 AC: 3AN: 151982Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000923 AC: 2AN: 216702Hom.: 0 AF XY: 0.00000861 AC XY: 1AN XY: 116086
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GnomAD4 exome AF: 0.0000142 AC: 20AN: 1405974Hom.: 0 Cov.: 31 AF XY: 0.0000174 AC XY: 12AN XY: 691428
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GnomAD4 genome ? AF: 0.0000197 AC: 3AN: 151982Hom.: 0 Cov.: 32 AF XY: 0.0000404 AC XY: 3AN XY: 74224
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:3
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
Cardiac arrhythmia Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Oct 23, 2023 | This variant is located in the SCN5A protein. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with SCN5A-related disorders in the literature. This variant has been identified in 2/216702 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
not specified Benign:1
Benign, criteria provided, single submitter | clinical testing | GeneDx | Sep 06, 2014 | 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. - |
not provided Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Sep 10, 2023 | - - |
Cardiovascular phenotype Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Dec 31, 2020 | 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. - |
Computational scores
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Name
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BayesDel_noAF
Benign
CADD
Benign
DANN
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Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at