Genetic Variant GRID1:p.Arg918Gln (chr10-85602550-C-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_017551.3(GRID1):c.2753G>A(p.Arg918Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000198 in 1,613,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

GRID1
NM_017551.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

GRID1 (HGNC:4575): (glutamate ionotropic receptor delta type subunit 1) This gene encodes a subunit of glutamate receptor channels. These channels mediate most of the fast excitatory synaptic transmission in the central nervous system and play key roles in synaptic plasticity.[provided by RefSeq, Jan 2009]

GRID1 links:

GRID1-AS1 (HGNC:44131): (GRID1 antisense RNA 1)

GRID1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.3330149).

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRID1	NM_017551.3 link	c.2753G>A	p.Arg918Gln	missense_variant	Exon 16 of 16	ENST00000327946.12	NP_060021.1	Q9ULK0-1A8KAN9
GRID1	XM_047425122.1 link	c.1466G>A	p.Arg489Gln	missense_variant	Exon 9 of 9		XP_047281078.1
GRID1	XM_047425123.1 link	c.1466G>A	p.Arg489Gln	missense_variant	Exon 9 of 9		XP_047281079.1
GRID1-AS1	NR_038986.1 link	n.282-2845C>T		intron_variant	Intron 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GRID1	ENST00000327946.12 link	c.2753G>A	p.Arg918Gln	missense_variant	Exon 16 of 16	2	NM_017551.3	ENSP00000330148.7		Q9ULK0-1

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152020

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000725

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000757

AC:

AN:

251050

Hom.:

AF XY:

0.0000958

AC XY:

AN XY:

135766

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000123

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000213

AC:

311

AN:

1461862

Hom.:

Cov.:

AF XY:

0.000209

AC XY:

152

AN XY:

727224

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000174

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000250

Gnomad4 OTH exome

AF:

0.000248

GnomAD4 genome

AF:

0.0000592

AC:

AN:

152020

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74228

show subpopulations

Gnomad4 AFR

AF:

0.0000725

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.0000491

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.0000576

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 22, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2753G>A (p.R918Q) alteration is located in exon 16 (coding exon 16) of the GRID1 gene. This alteration results from a G to A substitution at nucleotide position 2753, causing the arginine (R) at amino acid position 918 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.091

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.18

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.078

Eigen

Pathogenic

0.70

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.016

MetaRNN

Benign

0.33

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-0.75

REVEL

Benign

0.23

Sift

Benign

0.036

Sift4G

Benign

0.14

Polyphen

1.0

Vest4

0.45

MutPred

0.15

Gain of loop (P = 0.0312);

MVP

0.43

MPC

0.90

ClinPred

0.25

GERP RS

5.7

Varity_R

0.18

gMVP

0.44

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