rs75057869

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001040142.2(SCN2A):c.5910G>A(p.Thr1970Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00154 in 1,613,752 control chromosomes in the GnomAD database, including 46 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0023 ( 4 hom., cov: 32)

Exomes 𝑓: 0.0015 ( 42 hom. )

Consequence

SCN2A
NM_001040142.2 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -0.567

Publications

6 publications found

Variant links:

Genes affected

SCN2A (HGNC:10588): (sodium voltage-gated channel alpha subunit 2) Voltage-gated sodium channels are transmembrane glycoprotein complexes composed of a large alpha subunit with four repeat domains, each of which is composed of six membrane-spanning segments, and one or more regulatory beta subunits. Voltage-gated sodium channels function in the generation and propagation of action potentials in neurons and muscle. This gene encodes one member of the sodium channel alpha subunit gene family. Allelic variants of this gene are associated with seizure disorders and autism spectrum disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]

SCN2A Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen, Illumina
developmental and epileptic encephalopathy, 11
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
intellectual disability
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
episodic ataxia, type 9
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
seizures, benign familial infantile, 3
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
benign familial infantile epilepsy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
benign familial neonatal-infantile seizures
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Dravet syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
genetic developmental and epileptic encephalopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
infantile spasms
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
malignant migrating partial seizures of infancy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

SCN2A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 2-165389716-G-A is Benign according to our data. Variant chr2-165389716-G-A is described in ClinVar as Benign. ClinVar VariationId is 130225.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.567 with no splicing effect.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00229 (348/152060) while in subpopulation EAS AF = 0.0372 (192/5162). AF 95% confidence interval is 0.0329. There are 4 homozygotes in GnomAd4. There are 194 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 348 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCN2A	NM_001040142.2 link	c.5910G>A	p.Thr1970Thr	synonymous_variant	Exon 27 of 27	ENST00000375437.7	NP_001035232.1	Q99250-1
SCN2A	NM_001371246.1 link	c.5910G>A	p.Thr1970Thr	synonymous_variant	Exon 27 of 27	ENST00000631182.3	NP_001358175.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SCN2A	ENST00000375437.7 link	c.5910G>A	p.Thr1970Thr	synonymous_variant	Exon 27 of 27	5	NM_001040142.2	ENSP00000364586.2	Q99250-1
SCN2A	ENST00000631182.3 link	c.5910G>A	p.Thr1970Thr	synonymous_variant	Exon 27 of 27	5	NM_001371246.1	ENSP00000486885.1	Q99250-2
SCN2A	ENST00000283256.10 link	c.5910G>A	p.Thr1970Thr	synonymous_variant	Exon 27 of 27	1		ENSP00000283256.6	Q99250-1

Frequencies

GnomAD3 genomes

AF:

0.00228

AC:

347

AN:

151942

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00148

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00197

Gnomad ASJ

AF:

0.00173

Gnomad EAS

AF:

0.0371

Gnomad SAS

AF:

0.00436

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000353

Gnomad OTH

AF:

0.00479

GnomAD2 exomes

AF:

0.00431

AC:

1082

AN:

250968

AF XY:

0.00409

show subpopulations

Gnomad AFR exome

AF:

0.00173

Gnomad AMR exome

AF:

0.000608

Gnomad ASJ exome

AF:

0.00119

Gnomad EAS exome

AF:

0.0454

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000529

Gnomad OTH exome

AF:

0.00262

GnomAD4 exome

AF:

0.00146

AC:

2132

AN:

1461692

Hom.:

Cov.:

AF XY:

0.00146

AC XY:

1060

AN XY:

727142

show subpopulations

African (AFR)

AF:

0.000628

AC:

AN:

33466

American (AMR)

AF:

0.000828

AC:

AN:

44694

Ashkenazi Jewish (ASJ)

AF:

0.000880

AC:

AN:

26128

East Asian (EAS)

AF:

0.0327

AC:

1297

AN:

39686

South Asian (SAS)

AF:

0.00368

AC:

317

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00555

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000171

AC:

190

AN:

1111924

Other (OTH)

AF:

0.00356

AC:

215

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

143

286

430

573

716

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

114

152

190

<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:

0.00229

AC:

348

AN:

152060

Hom.:

Cov.:

AF XY:

0.00261

AC XY:

194

AN XY:

74346

show subpopulations

African (AFR)

AF:

0.00147

AC:

AN:

41470

American (AMR)

AF:

0.00197

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00173

AC:

AN:

3470

East Asian (EAS)

AF:

0.0372

AC:

192

AN:

5162

South Asian (SAS)

AF:

0.00436

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000353

AC:

AN:

67974

Other (OTH)

AF:

0.00521

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.000912

Hom.:

Bravo

AF:

0.00253

Asia WGS

AF:

0.0150

AC:

AN:

3478

EpiCase

AF:

0.000982

EpiControl

AF:

0.000415

ClinVar

Significance: Benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Oct 23, 2015

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Mar 04, 2013

GeneDx

Significance: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

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Inborn genetic diseases

Benign:1

Mar 09, 2016

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as 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. -

Seizures, benign familial infantile, 3;C3150987:Developmental and epileptic encephalopathy, 11

Benign:1

Jan 28, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Seizures, benign familial infantile, 3

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

0.52

(source)

DANN

Benign

0.74

PhyloP100

-0.57

Mutation Taster

=100/0

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over