NM_006922.4:c.4114A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_ModerateBP6_ModerateBS2

The NM_006922.4(SCN3A):c.4114A>G(p.Met1372Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,613,954 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

SCN3A
NM_006922.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter P:1B:1

Conservation

PhyloP100: 0.602

Publications

8 publications found

Variant links:

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]

SCN3A Gene-Disease associations (from GenCC):

genetic developmental and epileptic encephalopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: Illumina, ClinGen
developmental and epileptic encephalopathy, 62
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
epilepsy, familial focal, with variable foci 4
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
undetermined early-onset epileptic encephalopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

SCN3A links:

ENSG00000236283 (HGNC:):

ENSG00000236283 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.13425308).

BP6

Variant 2-165097377-T-C is Benign according to our data. Variant chr2-165097377-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 522565.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 5 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006922.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SCN3A	NM_006922.4	MANE Select	c.4114A>G	p.Met1372Val	missense	Exon 23 of 28	NP_008853.3
SCN3A	NM_001081676.2		c.3967A>G	p.Met1323Val	missense	Exon 23 of 28	NP_001075145.1
SCN3A	NM_001081677.2		c.3967A>G	p.Met1323Val	missense	Exon 23 of 28	NP_001075146.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SCN3A	ENST00000283254.12	TSL:1 MANE Select	c.4114A>G	p.Met1372Val	missense	Exon 23 of 28	ENSP00000283254.7
SCN3A	ENST00000409101.7	TSL:1	c.3967A>G	p.Met1323Val	missense	Exon 23 of 28	ENSP00000386726.3
SCN3A	ENST00000706067.1		c.4063A>G	p.Met1355Val	missense	Exon 23 of 28	ENSP00000516211.1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000239

AC:

AN:

251398

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000173

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461846

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727224

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.000157

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111968

Other (OTH)

AF:

0.0000828

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

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

AF:

0.0000329

AC:

AN:

152108

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74298

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41424

American (AMR)

AF:

0.000196

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68014

Other (OTH)

AF:

0.000478

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

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:

0.0000406

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Likely benign

Submissions summary: Pathogenic:1Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Epilepsy, familial focal, with variable foci 4

Pathogenic:1

Sep 01, 2020

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

not provided

Benign:1

Oct 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.30

CADD

Benign

(source)

DANN

Benign

0.77

DEOGEN2

Uncertain

0.73

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.53

FATHMM_MKL

Benign

0.15

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.048

MetaRNN

Benign

0.13

MetaSVM

Benign

-0.34

MutationAssessor

Benign

-0.56

PhyloP100

0.60

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.7

REVEL

Pathogenic

0.70

Sift

Benign

0.14

Sift4G

Benign

0.60

Polyphen

0.0040

Vest4

0.15

MutPred

0.49

Gain of loop (P = 0.0195)

MVP

0.39

MPC

0.68

ClinPred

0.043

GERP RS

4.6

Varity_R

0.18

gMVP

0.85

Mutation Taster

=22/78

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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