NM_001134407.3(GRIN2A):c.2852G>T (p.Gly951Val) AND Landau-Kleffner syndrome

Germline classification:: Benign/Likely benign (3 submissions)
Last evaluated:: Jan 27, 2024
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:: RCV000347959.17

Allele description [Variation Report for NM_001134407.3(GRIN2A):c.2852G>T (p.Gly951Val)]

NM_001134407.3(GRIN2A):c.2852G>T (p.Gly951Val)

Gene:

GRIN2A:glutamate ionotropic receptor NMDA type subunit 2A [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

16p13.2

Genomic location:

Preferred name:

NM_001134407.3(GRIN2A):c.2852G>T (p.Gly951Val)

Other names:

p.G951V:GGG>GTG

HGVS:

NC_000016.10:g.9764692C>A
NG_011812.2:g.423063G>T
NM_000833.5:c.2852G>T
NM_001134407.3:c.2852G>TMANE SELECT
NM_001134408.2:c.2852G>T
NP_000824.1:p.Gly951Val
NP_001127879.1:p.Gly951Val
NP_001127880.1:p.Gly951Val
NC_000016.9:g.9858549C>A
NG_011812.1:g.423063G>T
NM_000833.3:c.2852G>T
NM_000833.4:c.2852G>T

Protein change:

G951V

Links:

dbSNP: rs139795367

NCBI 1000 Genomes Browser:

rs139795367

Molecular consequence:

NM_000833.5:c.2852G>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001134407.3:c.2852G>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001134408.2:c.2852G>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Landau-Kleffner syndrome (FESD)
Synonyms:: Acquired aphasia with convulsive disorder; Acquired epileptiform aphasia; APHASIA, ACQUIRED, WITH EPILEPSY; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0009509; MedGen: C0282512; Orphanet: 1945; Orphanet: 725; Orphanet: 98818; OMIM: 245570

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000400156	Illumina Laboratory Services, Illumina	criteria provided, single submitter (ICSL Variant Classification Criteria 13 December 2019)	Benign (Jan 12, 2018)	germline	clinical testing	Citation Link,
SCV000638236	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Likely benign (Jan 27, 2024)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001139943	Mendelics	criteria provided, single submitter (Mendelics Assertion Criteria 2017)	Likely benign (May 28, 2019)	unknown	clinical testing	Citation Link

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000400156

Illumina Laboratory Services, Illumina

criteria provided, single submitter

(ICSL Variant Classification Criteria 13 December 2019)

Benign
(Jan 12, 2018)

germline

clinical testing

Citation Link,

SCV000638236

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Likely benign
(Jan 27, 2024)

germline

clinical testing

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

SCV001139943

Mendelics

criteria provided, single submitter

(Mendelics Assertion Criteria 2017)

Likely benign
(May 28, 2019)

unknown

clinical testing

Citation Link

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

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 Illumina Laboratory Services, Illumina, SCV000400156.3

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

Description

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.

#	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

From Labcorp Genetics (formerly Invitae), Labcorp, SCV000638236.7

#	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	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Mendelics, SCV001139943.1

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

#	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

Last Updated: Oct 20, 2024

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