chr2-165090160-T-C
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2PP2BP4_Strong
The NM_006922.4(SCN3A):c.5993A>G(p.Asn1998Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
SCN3A
NM_006922.4 missense
NM_006922.4 missense
Scores
1
18
Clinical Significance
Conservation
PhyloP100: 0.552
Genes affected
SCN3A (HGNC:10590): (sodium voltage-gated channel alpha subunit 3) Voltage-gated sodium channels are transmembrane glycoprotein complexes composed of a large alpha subunit with 24 transmembrane domains and one or more regulatory beta subunits. They are responsible for the generation and propagation of action potentials in neurons and muscle. This gene encodes one member of the sodium channel alpha subunit gene family, and is found in a cluster of five alpha subunit genes on chromosome 2. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -1 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, SCN3A
BP4
?
Computational evidence support a benign effect (MetaRNN=0.052068442).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SCN3A | NM_006922.4 | c.5993A>G | p.Asn1998Ser | missense_variant | 28/28 | ENST00000283254.12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SCN3A | ENST00000283254.12 | c.5993A>G | p.Asn1998Ser | missense_variant | 28/28 | 1 | NM_006922.4 | P1 | |
ENST00000638199.1 | n.1144-960T>C | intron_variant, non_coding_transcript_variant | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 29
GnomAD4 exome
Cov.:
29
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | May 06, 2021 | 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. 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 tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with SCN3A-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces asparagine with serine at codon 1998 of the SCN3A protein (p.Asn1998Ser). The asparagine residue is moderately conserved and there is a small physicochemical difference between asparagine and serine. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
DEOGEN2
Benign
T;.;.;.
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Benign
T;T;T;T
M_CAP
Benign
D
MetaRNN
Benign
T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
N;N;.;.
MutationTaster
Benign
N;N;N;N
PrimateAI
Benign
T
PROVEAN
Benign
N;N;.;N
REVEL
Benign
Sift
Benign
T;T;.;T
Sift4G
Benign
T;T;.;T
Polyphen
0.0
.;B;.;B
Vest4
MutPred
Gain of phosphorylation at N1998 (P = 2e-04);Gain of phosphorylation at N1998 (P = 2e-04);.;.;
MVP
MPC
0.54
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.