rs750073618
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP3_ModerateBS2
The NM_006514.4(SCN10A):c.307C>T(p.Arg103Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000254 in 1,613,706 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R103Q) has been classified as Likely benign.
Frequency
Consequence
NM_006514.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
SCN10A | ENST00000449082.3 | c.307C>T | p.Arg103Trp | missense_variant | Exon 3 of 28 | 1 | NM_006514.4 | ENSP00000390600.2 | ||
SCN10A | ENST00000643924.1 | c.307C>T | p.Arg103Trp | missense_variant | Exon 2 of 27 | ENSP00000495595.1 | ||||
SCN10A | ENST00000655275.1 | c.307C>T | p.Arg103Trp | missense_variant | Exon 3 of 28 | ENSP00000499510.1 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152106Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 250980Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135624
GnomAD4 exome AF: 0.0000260 AC: 38AN: 1461600Hom.: 0 Cov.: 31 AF XY: 0.0000261 AC XY: 19AN XY: 727118
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152106Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74306
ClinVar
Submissions by phenotype
Brugada syndrome Uncertain:1
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 103 of the SCN10A protein (p.Arg103Trp). This variant is present in population databases (rs750073618, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with SCN10A-related conditions. ClinVar contains an entry for this variant (Variation ID: 532120). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Cardiovascular phenotype Uncertain:1
The p.R103W variant (also known as c.307C>T), located in coding exon 2 of the SCN10A gene, results from a C to T substitution at nucleotide position 307. The arginine at codon 103 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is conserved. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at