16-9753632-A-G

Position:

chr16-9753632-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_ModerateBP6_ModerateBS1BS2

The NM_001134407.3(GRIN2A):c.*9517T>C variant causes a 3 prime UTR change. The variant allele was found at a frequency of 0.00967 in 195,244 control chromosomes in the GnomAD database, including 22 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.012 ( 22 hom., cov: 32)

Exomes 𝑓: 0.0023 ( 0 hom. )

Consequence

GRIN2A
NM_001134407.3 3_prime_UTR

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 4.59

Variant links:

Genes affected

GRIN2A (HGNC:4585): (glutamate ionotropic receptor NMDA type subunit 2A) This gene encodes a member of the glutamate-gated ion channel protein family. The encoded protein is an N-methyl-D-aspartate (NMDA) receptor subunit. NMDA receptors are both ligand-gated and voltage-dependent, and are involved in long-term potentiation, an activity-dependent increase in the efficiency of synaptic transmission thought to underlie certain kinds of memory and learning. These receptors are permeable to calcium ions, and activation results in a calcium influx into post-synaptic cells, which results in the activation of several signaling cascades. Disruption of this gene is associated with focal epilepsy and speech disorder with or without cognitive disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

GRIN2A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.37).

BP6

Variant 16-9753632-A-G is Benign according to our data. Variant chr16-9753632-A-G is described in ClinVar as [Benign]. Clinvar id is 321460.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0117 (1788/152338) while in subpopulation AFR AF= 0.0403 (1675/41580). AF 95% confidence interval is 0.0387. There are 22 homozygotes in gnomad4. There are 861 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 1788 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GRIN2A	NM_001134407.3 linkuse as main transcript	c.*9517T>C		3_prime_UTR_variant	13/13	ENST00000330684.4	NP_001127879.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GRIN2A	ENST00000330684.4 linkuse as main transcript	c.*9517T>C		3_prime_UTR_variant	13/13	1	NM_001134407.3	ENSP00000332549	P1	Q12879-1
GRIN2A	ENST00000396573.6 linkuse as main transcript	c.*9517T>C		3_prime_UTR_variant	14/14	1		ENSP00000379818	P1	Q12879-1

Frequencies

GnomAD3 genomes

AF:

0.0117

AC:

1781

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0402

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00544

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.00764

GnomAD4 exome

AF:

0.00233

AC:

100

AN:

42906

Hom.:

Cov.:

AF XY:

0.00212

AC XY:

AN XY:

19816

show subpopulations

Gnomad4 AFR exome

AF:

0.0395

Gnomad4 AMR exome

AF:

0.00840

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000117

Gnomad4 OTH exome

AF:

0.00482

GnomAD4 genome

AF:

0.0117

AC:

1788

AN:

152338

Hom.:

Cov.:

AF XY:

0.0116

AC XY:

861

AN XY:

74502

show subpopulations

Gnomad4 AFR

AF:

0.0403

Gnomad4 AMR

AF:

0.00536

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.00756

Alfa

AF:

0.00999

Hom.:

Bravo

AF:

0.0138

Asia WGS

AF:

0.00202

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Landau-Kleffner syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Benign

0.86

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over