rs774510851
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_001365536.1(SCN9A):c.1901G>T(p.Arg634Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign 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. R634C) has been classified as Uncertain significance.
Frequency
Consequence
NM_001365536.1 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SCN9A | NM_001365536.1 | c.1901G>T | p.Arg634Leu | missense_variant | 12/27 | ENST00000642356.2 | |
SCN1A-AS1 | NR_110260.1 | n.1029+7279C>A | intron_variant, non_coding_transcript_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SCN9A | ENST00000642356.2 | c.1901G>T | p.Arg634Leu | missense_variant | 12/27 | NM_001365536.1 | P1 | ||
SCN1A-AS1 | ENST00000651574.1 | n.1707+7279C>A | intron_variant, non_coding_transcript_variant |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461812Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2AN XY: 727196
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
SCN9A-related disorder Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Mar 07, 2023 | The SCN9A c.1901G>T variant is predicted to result in the amino acid substitution p.Arg634Leu. To our knowledge, this variant has not been reported in the literature or in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. - |
Generalized epilepsy with febrile seizures plus, type 7;C2752089:Neuropathy, hereditary sensory and autonomic, type 2A Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 07, 2023 | This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 634 of the SCN9A protein (p.Arg634Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SCN9A-related conditions. ClinVar contains an entry for this variant (Variation ID: 471090). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SCN9A protein function with a negative predictive value of 95%. 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. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at