3-38718660-A-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP6_Very_StrongBS2

The NM_006514.4(SCN10A):c.3674T>C(p.Ile1225Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000489 in 1,614,116 control chromosomes in the GnomAD database, including 3 homozygotes. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I1225M) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00049 ( 3 hom. )

Consequence

SCN10A
NM_006514.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 9.32

Publications

11 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: Benign. The variant received -12 ACMG points.

BP6

Variant 3-38718660-A-G is Benign according to our data. Variant chr3-38718660-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 445871.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High AC in GnomAd4 at 70 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006514.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SCN10A	NM_006514.4	MANE Select	c.3674T>C	p.Ile1225Thr	missense	Exon 21 of 28	NP_006505.4
SCN10A	NM_001293306.2		c.3671T>C	p.Ile1224Thr	missense	Exon 20 of 27	NP_001280235.2
SCN10A	NM_001293307.2		c.3380T>C	p.Ile1127Thr	missense	Exon 19 of 26	NP_001280236.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SCN10A	ENST00000449082.3	TSL:1 MANE Select	c.3674T>C	p.Ile1225Thr	missense	Exon 21 of 28	ENSP00000390600.2
SCN10A	ENST00000643924.1		c.3671T>C	p.Ile1224Thr	missense	Exon 20 of 27	ENSP00000495595.1
SCN10A	ENST00000655275.1		c.3698T>C	p.Ile1233Thr	missense	Exon 21 of 28	ENSP00000499510.1

Frequencies

GnomAD3 genomes

AF:

0.000460

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00137

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000559

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000569

AC:

143

AN:

251354

AF XY:

0.000633

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000405

Gnomad ASJ exome

AF:

0.000397

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000871

Gnomad OTH exome

AF:

0.00131

GnomAD4 exome

AF:

0.000493

AC:

720

AN:

1461808

Hom.:

Cov.:

AF XY:

0.000534

AC XY:

388

AN XY:

727196

show subpopulations

African (AFR)

AF:

0.000119

AC:

AN:

33480

American (AMR)

AF:

0.000514

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.000230

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000522

AC:

AN:

86234

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00886

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.000492

AC:

547

AN:

1111974

Other (OTH)

AF:

0.000712

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

104

139

174

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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

AF:

0.000460

AC:

AN:

152308

Hom.:

Cov.:

AF XY:

0.000470

AC XY:

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41574

American (AMR)

AF:

0.00137

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000559

AC:

AN:

68026

Other (OTH)

AF:

0.00142

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000767

Hom.:

Bravo

AF:

0.000635

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000698

AC:

ExAC

AF:

0.000576

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00131

EpiControl

AF:

0.000771

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Dec 17, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: SCN10A c.3674T>C (p.Ile1225Thr) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00049 in 1614116 control chromosomes in the gnomAD database, including 3 homozygotes. The observed variant frequency is approximately 78 fold of the estimated maximal expected allele frequency for a pathogenic variant in SCN10A causing Arrhythmia phenotype (6.3e-06). At-least one study has described that p.Ile1225Thr could be a genetic modifiers of the J-point and QTc interval (Ghouse_2017). This report does not provide unequivocal conclusions about association of the variant with Arrhythmia. The following publication has been ascertained in the context of this evaluation (PMID: 27711072). ClinVar contains an entry for this variant (Variation ID: 445871). Based on the evidence outlined above, the variant was classified as likely benign.

Dec 05, 2017

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

not provided

Benign:2

Aug 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

SCN10A: BS1

Jul 05, 2017

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Brugada syndrome 1

Benign:1

Aug 22, 2023

Mendelics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

SCN10A-related disorder

Benign:1

Sep 08, 2023

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Brugada syndrome

Benign:1

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Cardiovascular phenotype

Benign:1

Dec 03, 2018

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Uncertain

0.074

BayesDel_noAF

Pathogenic

0.29

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.87

Eigen

Pathogenic

0.94

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.95

M_CAP

Pathogenic

0.44

MetaRNN

Uncertain

0.71

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.0

PhyloP100

9.3

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-4.8

REVEL

Pathogenic

0.94

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.81

MVP

0.89

MPC

0.42

ClinPred

0.20

GERP RS

4.5

Varity_R

0.87

gMVP

0.73

Mutation Taster

=81/19

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over