NM_006514.4:c.243T>A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_006514.4(SCN10A):c.243T>A(p.Asp81Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,712 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SCN10A
NM_006514.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: -0.254

Publications

0 publications found

Variant links:

Genes affected

SCN10A (HGNC:10582): (sodium voltage-gated channel alpha subunit 10) The protein encoded by this gene is a tetrodotoxin-resistant voltage-gated sodium channel alpha subunit. The properties of the channel formed by the encoded transmembrane protein can be altered by interaction with different beta subunits. This protein may be involved in the onset of pain associated with peripheral neuropathy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

SCN10A Gene-Disease associations (from GenCC):

sodium channelopathy-related small fiber neuropathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
episodic pain syndrome, familial, 2
Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae), Illumina, Ambry Genetics
Brugada syndrome
Inheritance: Unknown Classification: LIMITED Submitted by: Genomics England PanelApp
Brugada syndrome 1
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

SCN10A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCN10A	NM_006514.4 link	c.243T>A	p.Asp81Glu	missense_variant	Exon 2 of 28	ENST00000449082.3	NP_006505.4	Q9Y5Y9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SCN10A	ENST00000449082.3 link	c.243T>A	p.Asp81Glu	missense_variant	Exon 2 of 28	1	NM_006514.4	ENSP00000390600.2	Q9Y5Y9
SCN10A	ENST00000643924.1 link	c.243T>A	p.Asp81Glu	missense_variant	Exon 1 of 27			ENSP00000495595.1	A0A2R8Y6J6
SCN10A	ENST00000655275.1 link	c.243T>A	p.Asp81Glu	missense_variant	Exon 2 of 28			ENSP00000499510.1	A0A590UJM0

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461712

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727158

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33470

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111892

Other (OTH)

AF:

0.00

AC:

AN:

60382

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Brugada syndrome

Uncertain:1

Aug 30, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces aspartic acid with glutamic acid at codon 81 of the SCN10A protein (p.Asp81Glu). The aspartic acid residue is highly conserved and there is a small physicochemical difference between aspartic acid and glutamic acid. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a SCN10A-related disease. 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, but these predictions have not been confirmed by published functional studies. In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. -

not provided

Uncertain:1

Nov 02, 2016

Stanford Center for Inherited Cardiovascular Disease, Stanford University

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:provider interpretation

p.Asp81Glu (c.243T>A) in SCN10A Seen in a family with familial DCM in our center, with a likely pathogenic DSP variant. Testing done at Invitae. This gene has no well-established disease association. As such, we would by default consider it a variant of uncertain significance. We did not review it. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.94

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

-0.030

CADD

Benign

8.3

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.57

D;.;D;.

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.54

FATHMM_MKL

Benign

0.38

LIST_S2

Uncertain

0.92

.;D;D;D

M_CAP

Pathogenic

0.38

MetaRNN

Uncertain

0.47

T;T;T;T

MetaSVM

Pathogenic

0.80

MutationAssessor

Uncertain

2.1

M;.;M;.

PhyloP100

-0.25

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.5

D;.;.;.

REVEL

Uncertain

0.48

Sift

Pathogenic

0.0

D;.;.;.

Sift4G

Benign

0.17

T;.;.;.

Polyphen

1.0

D;.;D;.

Vest4

0.49

MutPred

0.41

Gain of glycosylation at Y86 (P = 0.0118);Gain of glycosylation at Y86 (P = 0.0118);Gain of glycosylation at Y86 (P = 0.0118);Gain of glycosylation at Y86 (P = 0.0118);

MVP

0.76

MPC

0.37

ClinPred

0.99

GERP RS

-3.7

PromoterAI

-0.0072

Neutral

(source)

Varity_R

0.69

gMVP

0.59

Mutation Taster

=83/17

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over