16-9880509-T-C

Position:

• chr16-9880509-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001134407.3(GRIN2A):​c.1122+10477A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.711 in 152,100 control chromosomes in the GnomAD database, including 39,884 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.71 (39884 hom., cov: 31)
• Consequence: GRIN2A NM_001134407.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.809

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.885 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRIN2A	NM_001134407.3	c.1122+10477A>G		intron_variant		ENST00000330684.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRIN2A	ENST00000330684.4	c.1122+10477A>G		intron_variant		1	NM_001134407.3	P1

Frequencies

GnomAD3 genomes AF: 0.711 AC: 108038 AN: 151978 Hom.: 39846 Cov.: 31

Gnomad AFR AF: 0.893

Gnomad AMI AF: 0.588

Gnomad AMR AF: 0.736

Gnomad ASJ AF: 0.752

Gnomad EAS AF: 0.396

Gnomad SAS AF: 0.603

Gnomad FIN AF: 0.536

Gnomad MID AF: 0.736

Gnomad NFE AF: 0.653

Gnomad OTH AF: 0.714

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.711 AC: 108133 AN: 152100 Hom.: 39884 Cov.: 31 AF XY: 0.704 AC XY: 52305 AN XY: 74336

Gnomad4 AFR AF: 0.893

Gnomad4 AMR AF: 0.735

Gnomad4 ASJ AF: 0.752

Gnomad4 EAS AF: 0.396

Gnomad4 SAS AF: 0.602

Gnomad4 FIN AF: 0.536

Gnomad4 NFE AF: 0.653

Gnomad4 OTH AF: 0.710

Alfa AF: 0.663 Hom.: 31837

Bravo AF: 0.729

Asia WGS AF: 0.535 AC: 1864 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	4.2
DANN	Benign	0.75

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

Other links and lift over

dbSNP: rs968301; hg19: chr16-9974366;