4-157303706-G-A

Position:

chr4-157303706-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 1P and 10B. PP2BP4_StrongBP6_ModerateBS2

The NM_001083619.3(GRIA2):c.384G>A(p.Met128Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00012 in 1,613,930 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.00025 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 3 hom. )

Consequence

GRIA2
NM_001083619.3 missense

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 8.09

Variant links:

Genes affected

GRIA2 (HGNC:4572): (glutamate ionotropic receptor AMPA type subunit 2) Glutamate receptors are the predominant excitatory neurotransmitter receptors in the mammalian brain and are activated in a variety of normal neurophysiologic processes. This gene product belongs to a family of glutamate receptors that are sensitive to alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA), and function as ligand-activated cation channels. These channels are assembled from 4 related subunits, GRIA1-4. The subunit encoded by this gene (GRIA2) is subject to RNA editing (CAG->CGG; Q->R) within the second transmembrane domain, which is thought to render the channel impermeable to Ca(2+). Human and animal studies suggest that pre-mRNA editing is essential for brain function, and defective GRIA2 RNA editing at the Q/R site may be relevant to amyotrophic lateral sclerosis (ALS) etiology. Alternative splicing, resulting in transcript variants encoding different isoforms, (including the flip and flop isoforms that vary in their signal transduction properties), has been noted for this gene. [provided by RefSeq, Jul 2008]

GRIA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), GRIA2. . Gene score misZ 4.5573 (greater than the threshold 3.09). Trascript score misZ 5.479 (greater than threshold 3.09). GenCC has associacion of gene with neurodevelopmental disorder with language impairment and behavioral abnormalities.

BP4

Computational evidence support a benign effect (MetaRNN=0.048568398).

BP6

Variant 4-157303706-G-A is Benign according to our data. Variant chr4-157303706-G-A is described in ClinVar as [Benign]. Clinvar id is 2583024.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 38 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRIA2	NM_001083619.3 linkuse as main transcript	c.384G>A	p.Met128Ile	missense_variant	3/16	ENST00000264426.14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRIA2	ENST00000264426.14 linkuse as main transcript	c.384G>A	p.Met128Ile	missense_variant	3/16	1	NM_001083619.3	P4	P42262-1

Frequencies

GnomAD3 genomes

AF:

0.000250

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00330

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000227

AC:

AN:

251192

Hom.:

AF XY:

0.000280

AC XY:

AN XY:

135730

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00203

Gnomad NFE exome

AF:

0.0000969

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000106

AC:

155

AN:

1461792

Hom.:

Cov.:

AF XY:

0.000129

AC XY:

AN XY:

727204

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00185

Gnomad4 NFE exome

AF:

0.0000423

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.000250

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74308

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00330

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000710

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000206

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Sep 01, 2023

GRIA2: BS1, BS2 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.88

BayesDel_addAF

Benign

-0.092

BayesDel_noAF

Benign

-0.16

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.28

.;.;.;.;T;T;T

Eigen

Uncertain

0.47

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

.;D;D;D;D;D;D

M_CAP

Benign

0.022

MetaRNN

Benign

0.033

T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

.;.;L;L;L;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

-1.3

N;N;.;N;N;N;N

REVEL

Benign

0.20

Sift

Uncertain

0.022

D;D;.;D;D;T;D

Sift4G

Uncertain

0.039

D;D;.;D;D;D;T

Polyphen

0.048, 0.63

.;.;.;B;P;.;.

Vest4

0.74

MutPred

0.61

.;.;Gain of ubiquitination at K133 (P = 0.0982);Gain of ubiquitination at K133 (P = 0.0982);Gain of ubiquitination at K133 (P = 0.0982);.;.;

MVP

0.56

MPC

0.76

ClinPred

0.12

GERP RS

5.8

Varity_R

0.59

gMVP

0.87

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