U.S. flag

An official website of the United States government

NM_001127644.2(GABRA1):c.833C>T (p.Ser278Phe) AND multiple conditions

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Nov 10, 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:
RCV003812954.1

Allele description

NM_001127644.2(GABRA1):c.833C>T (p.Ser278Phe)

Gene:
GABRA1:gamma-aminobutyric acid type A receptor subunit alpha1 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
5q34
Genomic location:
Preferred name:
NM_001127644.2(GABRA1):c.833C>T (p.Ser278Phe)
HGVS:
  • NC_000005.10:g.161891027C>T
  • NG_011548.1:g.48837C>T
  • NM_000806.5:c.833C>T
  • NM_001127643.2:c.833C>T
  • NM_001127644.2:c.833C>TMANE SELECT
  • NM_001127645.2:c.833C>T
  • NM_001127648.2:c.833C>T
  • NP_000797.2:p.Ser278Phe
  • NP_001121115.1:p.Ser278Phe
  • NP_001121116.1:p.Ser278Phe
  • NP_001121117.1:p.Ser278Phe
  • NP_001121120.1:p.Ser278Phe
  • NC_000005.9:g.161318033C>T
Protein change:
S278F
Molecular consequence:
  • NM_000806.5:c.833C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127643.2:c.833C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127644.2:c.833C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127645.2:c.833C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127648.2:c.833C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Idiopathic generalized epilepsy
Synonyms:
EIG; Generalised epilepsy
Identifiers:
MONDO: MONDO:0005579; MedGen: C0270850; OMIM: 600669; OMIM: PS600669
Name:
Epilepsy, idiopathic generalized, susceptibility to, 13
Synonyms:
EPILEPSY, JUVENILE MYOCLONIC, SUSCEPTIBILITY TO, 5; Epilepsy, juvenile myoclonic 5
Identifiers:
MONDO: MONDO:0012627; MedGen: C4013473; Orphanet: 307; Orphanet: 64280; OMIM: 611136
Name:
Epilepsy, childhood absence 4 (ECA4)
Synonyms:
EPILEPSY, CHILDHOOD ABSENCE, SUSCEPTIBILITY TO, 4
Identifiers:
MedGen: C1970160; Orphanet: 307

Recent activity

Clear Turn Off Turn On

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...

Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004611076Invitae
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Nov 10, 2023) 		germlineclinical testing

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

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical 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 Invitae, SCV004611076.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 278 of the GABRA1 protein (p.Ser278Phe). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with GABRA1-related conditions. 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on GABRA1 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.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Mar 5, 2024