NM_001040142.2(SCN2A):c.4748T>C (p.Ile1583Thr) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Jul 16, 2023
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

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:: RCV003766446.2

Allele description [Variation Report for NM_001040142.2(SCN2A):c.4748T>C (p.Ile1583Thr)]

NM_001040142.2(SCN2A):c.4748T>C (p.Ile1583Thr)

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.4748T>C (p.Ile1583Thr)

HGVS:

NC_000002.12:g.165386942T>C
NG_008143.1:g.152541T>C
NM_001040142.2:c.4748T>CMANE SELECT
NM_001040143.2:c.4748T>C
NM_001371246.1:c.4748T>C
NM_001371247.1:c.4748T>C
NM_021007.3:c.4748T>C
NP_001035232.1:p.Ile1583Thr
NP_001035233.1:p.Ile1583Thr
NP_001358175.1:p.Ile1583Thr
NP_001358176.1:p.Ile1583Thr
NP_066287.2:p.Ile1583Thr
NP_066287.2:p.Ile1583Thr
NC_000002.11:g.166243452T>C
NM_021007.2:c.4748T>C

Protein change:

I1583T

Links:

dbSNP: rs367566833

NCBI 1000 Genomes Browser:

rs367566833

Molecular consequence:

NM_001040142.2:c.4748T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001040143.2:c.4748T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001371246.1:c.4748T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001371247.1:c.4748T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_021007.3:c.4748T>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
SCV004570033	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Jul 16, 2023)	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

SCV004570033

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Jul 16, 2023)

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

Citations

PubMed

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. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV004570033.1

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

Description

This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 1583 of the SCN2A protein (p.Ile1583Thr). This variant is present in population databases (rs367566833, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with SCN2A-related conditions. ClinVar contains an entry for this variant (Variation ID: 391932). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SCN2A protein function. 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.

#	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: Sep 29, 2024

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