rs763423536

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_001365536.1(SCN9A):​c.3868C>T​(p.Arg1290Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000035 in 1,429,484 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging 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. R1290Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 0.0000035 ( 0 hom. )

Consequence

SCN9A
NM_001365536.1 missense

Scores

17
1
1

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.88

Publications

2 publications found
Variant links:
Genes affected
SCN9A (HGNC:10597): (sodium voltage-gated channel alpha subunit 9) This gene encodes a voltage-gated sodium channel which plays a significant role in nociception signaling. Mutations in this gene have been associated with primary erythermalgia, channelopathy-associated insensitivity to pain, and paroxysmal extreme pain disorder. [provided by RefSeq, Aug 2009]
SCN1A-AS1 (HGNC:54069): (SCN1A and SCN9A antisense RNA 1)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.951

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SCN9ANM_001365536.1 linkc.3868C>T p.Arg1290Trp missense_variant Exon 21 of 27 ENST00000642356.2 NP_001352465.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SCN9AENST00000642356.2 linkc.3868C>T p.Arg1290Trp missense_variant Exon 21 of 27 NM_001365536.1 ENSP00000495601.1
SCN9AENST00000303354.11 linkc.3868C>T p.Arg1290Trp missense_variant Exon 21 of 27 5 ENSP00000304748.7
SCN9AENST00000409672.5 linkc.3835C>T p.Arg1279Trp missense_variant Exon 21 of 27 5 ENSP00000386306.1
SCN9AENST00000645907.1 linkc.3835C>T p.Arg1279Trp missense_variant Exon 21 of 27 ENSP00000495983.1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD2 exomes
AF:
0.00000897
AC:
2
AN:
222922
AF XY:
0.0000164
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000192
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000350
AC:
5
AN:
1429484
Hom.:
0
Cov.:
28
AF XY:
0.00000423
AC XY:
3
AN XY:
709960
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
31452
American (AMR)
AF:
0.00
AC:
0
AN:
39066
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25624
East Asian (EAS)
AF:
0.00
AC:
0
AN:
37364
South Asian (SAS)
AF:
0.00
AC:
0
AN:
78780
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53062
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5696
European-Non Finnish (NFE)
AF:
0.00000455
AC:
5
AN:
1099276
Other (OTH)
AF:
0.00
AC:
0
AN:
59164
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.505
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
31
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Generalized epilepsy with febrile seizures plus, type 7;C2752089:Neuropathy, hereditary sensory and autonomic, type 2A Uncertain:1
Dec 22, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 1279 of the SCN9A protein (p.Arg1279Trp). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. 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: 471117). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SCN9A protein function. 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. -

not provided Uncertain:1
Aug 23, 2019
Revvity Omics, Revvity
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Pathogenic
0.53
D
BayesDel_noAF
Pathogenic
0.52
CADD
Pathogenic
27
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.97
.;D;.;D;.
Eigen
Pathogenic
1.0
Eigen_PC
Pathogenic
0.88
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Pathogenic
0.99
D;.;D;D;D
M_CAP
Pathogenic
0.56
D
MetaRNN
Pathogenic
0.95
D;D;D;D;D
MetaSVM
Pathogenic
0.99
D
MutationAssessor
Pathogenic
5.6
.;H;.;H;H
PhyloP100
1.9
PrimateAI
Pathogenic
0.89
D
PROVEAN
Pathogenic
-7.1
D;.;.;.;D
REVEL
Pathogenic
0.87
Sift
Pathogenic
0.0
D;.;.;.;D
Sift4G
Pathogenic
0.0
D;D;.;.;D
Vest4
0.89
MutPred
0.82
Loss of methylation at R1279 (P = 0.0165);.;Loss of methylation at R1279 (P = 0.0165);.;.;
MVP
0.94
MPC
0.57
ClinPred
1.0
D
GERP RS
5.8
Varity_R
0.85
gMVP
0.94
Mutation Taster
=10/90
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs763423536; hg19: chr2-167089906; COSMIC: COSV57613614; API