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NM_001127644.2(GABRA1):c.320C>T (p.Pro107Leu) AND multiple conditions

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Nov 7, 2022
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:
RCV003795084.2

Allele description [Variation Report for NM_001127644.2(GABRA1):c.320C>T (p.Pro107Leu)]

NM_001127644.2(GABRA1):c.320C>T (p.Pro107Leu)

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.320C>T (p.Pro107Leu)
HGVS:
  • NC_000005.10:g.161873181C>T
  • NG_011548.1:g.30991C>T
  • NM_000806.5:c.320C>T
  • NM_001127643.2:c.320C>T
  • NM_001127644.2:c.320C>TMANE SELECT
  • NM_001127645.2:c.320C>T
  • NM_001127648.2:c.320C>T
  • NP_000797.2:p.Pro107Leu
  • NP_001121115.1:p.Pro107Leu
  • NP_001121116.1:p.Pro107Leu
  • NP_001121117.1:p.Pro107Leu
  • NP_001121120.1:p.Pro107Leu
  • NC_000005.9:g.161300187C>T
Protein change:
P107L
Molecular consequence:
  • NM_000806.5:c.320C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127643.2:c.320C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127644.2:c.320C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127645.2:c.320C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001127648.2:c.320C>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

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004590062Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Nov 7, 2022) 		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 Labcorp Genetics (formerly Invitae), Labcorp, SCV004590062.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical 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. 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 GABRA1 protein function. This variant has not been reported in the literature in individuals affected with GABRA1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 107 of the GABRA1 protein (p.Pro107Leu).

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

Last Updated: Sep 29, 2024