NM_001040142.2(SCN2A):c.1901T>C (p.Val634Ala) AND multiple conditions

Germline classification:: Uncertain significance (2 submissions)
Last evaluated:: Jul 14, 2022
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000764279.4

Allele description [Variation Report for NM_001040142.2(SCN2A):c.1901T>C (p.Val634Ala)]

NM_001040142.2(SCN2A):c.1901T>C (p.Val634Ala)

Gene:

SCN2A:sodium voltage-gated channel alpha subunit 2 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

2q24.3

Genomic location:

Preferred name:

NM_001040142.2(SCN2A):c.1901T>C (p.Val634Ala)

Other names:

p.V634A:GTG>GCG

HGVS:

NC_000002.12:g.165323385T>C
NG_008143.1:g.88984T>C
NM_001040142.2:c.1901T>CMANE SELECT
NM_001040143.2:c.1901T>C
NM_001371246.1:c.1901T>C
NM_001371247.1:c.1901T>C
NM_021007.3:c.1901T>C
NP_001035232.1:p.Val634Ala
NP_001035233.1:p.Val634Ala
NP_001358175.1:p.Val634Ala
NP_001358176.1:p.Val634Ala
NP_066287.2:p.Val634Ala
NP_066287.2:p.Val634Ala
NC_000002.11:g.166179895T>C
NM_021007.2:c.1901T>C

Protein change:

V634A

Links:

dbSNP: rs756119996

NCBI 1000 Genomes Browser:

rs756119996

Molecular consequence:

NM_001040142.2:c.1901T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001040143.2:c.1901T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001371246.1:c.1901T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001371247.1:c.1901T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_021007.3:c.1901T>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Seizures, benign familial infantile, 3 (BFIS3)
Synonyms:: CONVULSIONS, BENIGN FAMILIAL INFANTILE, 3; Familial neonatal seizures
Identifiers:: MONDO: MONDO:0011904; MedGen: C1843140; Orphanet: 140927; Orphanet: 306; OMIM: 607745

Name:: Developmental and epileptic encephalopathy, 11 (DEE11)
Synonyms:: Early infantile epileptic encephalopathy 11
Identifiers:: MONDO: MONDO:0013388; MedGen: C3150987; Orphanet: 1934; OMIM: 613721

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000895296	Fulgent Genetics, Fulgent Genetics	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Oct 31, 2018)	unknown	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV003457214	Invitae	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Jul 14, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000895296

Fulgent Genetics, Fulgent Genetics

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Oct 31, 2018)

unknown

clinical testing

PubMed (1)
[See all records that cite this PMID]

SCV003457214

Invitae

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Jul 14, 2022)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	unknown	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240-242.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

PMC

Standards and Guidelines for the Interpretation of Sequence Variants: A Joint Consensus Recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL.

Genetics in medicine : official journal of the American College of Medical Genetics. 2015 Mar 5; 17(5): 405-424

PMC [article]

PMCID:: PMC4544753
PMID:: 25741868
DOI:: 10.1038/gim.2015.30

Details of each submission

From Fulgent Genetics, Fulgent Genetics, SCV000895296.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Invitae, SCV003457214.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 207066). This variant has not been reported in the literature in individuals affected with SCN2A-related conditions. This variant is present in population databases (rs756119996, gnomAD 0.002%). This sequence change replaces valine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 634 of the SCN2A protein (p.Val634Ala).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Feb 28, 2024

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