chr2-165294036-AAAG-A

Variant names:

Variant summary

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

The ENST00000283256.10(SCN2A):c.-149_-147delAGA variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 0)

Exomes 𝑓: 0.000061 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

SCN2A
ENST00000283256.10 5_prime_UTR

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 0.00500

Publications

0 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: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCN2A	NM_001040142.2 link	c.-51-1735_-51-1733delAGA		intron_variant	Intron 1 of 26	ENST00000375437.7	NP_001035232.1	Q99250-1
SCN2A	NM_001371246.1 link	c.-51-1735_-51-1733delAGA		intron_variant	Intron 1 of 26	ENST00000631182.3	NP_001358175.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
SCN2A	ENST00000283256.10 link	c.-149_-147delAGA	5_prime_UTR_variant	Exon 1 of 27	1		ENSP00000283256.6	Q99250-1
SCN2A	ENST00000375437.7 link	c.-51-1735_-51-1733delAGA	intron_variant	Intron 1 of 26	5	NM_001040142.2	ENSP00000364586.2	Q99250-1
SCN2A	ENST00000631182.3 link	c.-51-1735_-51-1733delAGA	intron_variant	Intron 1 of 26	5	NM_001371246.1	ENSP00000486885.1	Q99250-2
SCN2A	ENST00000424833.5 link	c.-51-1735_-51-1733delAGA	intron_variant	Intron 1 of 10	1		ENSP00000406454.2	F6U291

Frequencies

GnomAD3 genomes

AF:

0.000100

AC:

AN:

139478

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000509

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000767

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000230

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000157

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000609

AC:

AN:

772040

Hom.:

AF XY:

0.0000615

AC XY:

AN XY:

357520

show subpopulations

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

African (AFR)

AF:

0.0000687

AC:

AN:

14556

American (AMR)

AF:

0.00

AC:

AN:

904

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

4770

East Asian (EAS)

AF:

0.00

AC:

AN:

3342

South Asian (SAS)

AF:

0.0000653

AC:

AN:

15310

European-Finnish (FIN)

AF:

0.00

AC:

AN:

252

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1478

European-Non Finnish (NFE)

AF:

0.0000623

AC:

AN:

706186

Other (OTH)

AF:

0.0000396

AC:

AN:

25242

⚠️ 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: 0.254

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000107

AC:

AN:

139540

Hom.:

Cov.:

AF XY:

0.000133

AC XY:

AN XY:

67474

show subpopulations

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

African (AFR)

AF:

0.0000762

AC:

AN:

39356

American (AMR)

AF:

0.0000766

AC:

AN:

13056

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3372

East Asian (EAS)

AF:

0.000230

AC:

AN:

4350

South Asian (SAS)

AF:

0.00

AC:

AN:

4358

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8336

Middle Eastern (MID)

AF:

0.00

AC:

AN:

284

European-Non Finnish (NFE)

AF:

0.000157

AC:

AN:

63680

Other (OTH)

AF:

0.00

AC:

AN:

1902

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 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: 0.300

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Early Infantile Epileptic Encephalopathy, Autosomal Dominant

Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Seizures, benign familial infantile, 3

Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.0050

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

chr2-165294036-AAAG-A

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