NM_001365536.1(SCN9A):c.4205T>C (p.Val1402Ala) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Dec 30, 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:: RCV000465069.12

Allele description [Variation Report for NM_001365536.1(SCN9A):c.4205T>C (p.Val1402Ala)]

NM_001365536.1(SCN9A):c.4205T>C (p.Val1402Ala)

Genes:

SCN1A-AS1:SCN1A and SCN9A antisense RNA 1 [Gene - HGNC]
SCN9A:sodium voltage-gated channel alpha subunit 9 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

2q24.3

Genomic location:

Preferred name:

NM_001365536.1(SCN9A):c.4205T>C (p.Val1402Ala)

HGVS:

NC_000002.12:g.166228692A>G
NG_012798.1:g.152296T>C
NM_001365536.1:c.4205T>CMANE SELECT
NM_002977.4:c.4172T>C
NP_001352465.1:p.Val1402Ala
NP_002968.1:p.Val1391Ala
NP_002968.1:p.Val1391Ala
NP_002968.2:p.Val1391Ala
LRG_369t1:c.4172T>C
LRG_369:g.152296T>C
LRG_369p1:p.Val1391Ala
NC_000002.11:g.167085202A>G
NM_002977.2:c.4172T>C
NM_002977.3:c.4172T>C

Protein change:

V1391A

Links:

dbSNP: rs200266532

NCBI 1000 Genomes Browser:

rs200266532

Molecular consequence:

NM_001365536.1:c.4205T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_002977.4:c.4172T>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Neuropathy, hereditary sensory and autonomic, type 2A (HSAN2A)
Synonyms:: ACROOSTEOLYSIS, GIACCAI TYPE; ACROOSTEOLYSIS, NEUROGENIC; HSAN IIA; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0024309; MedGen: C2752089; Orphanet: 970; OMIM: 201300

Name:: Generalized epilepsy with febrile seizures plus, type 7 (GEFSP7)
Synonyms:: GEFS+, TYPE 7
Identifiers:: MONDO: MONDO:0013470; MedGen: C2751778; Orphanet: 36387; OMIM: 613863

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000548360	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Dec 30, 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

SCV000548360

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Dec 30, 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, SCV000548360.9

#	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 valine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 1391 of the SCN9A protein (p.Val1391Ala). This variant is present in population databases (rs200266532, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with SCN9A-related conditions. ClinVar contains an entry for this variant (Variation ID: 408582). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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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