rs762490192

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 1P and 1B. PP2BS1_Supporting

The NM_007327.4(GRIN1):c.467G>A(p.Arg156His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,613,222 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R156S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

GRIN1
NM_007327.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 9.33

Variant links:

Genes affected

GRIN1 (HGNC:4584): (glutamate ionotropic receptor NMDA type subunit 1) The protein encoded by this gene is a critical subunit of N-methyl-D-aspartate receptors, members of the glutamate receptor channel superfamily which are heteromeric protein complexes with multiple subunits arranged to form a ligand-gated ion channel. These subunits play a key role in the plasticity of synapses, which is believed to underlie memory and learning. Cell-specific factors are thought to control expression of different isoforms, possibly contributing to the functional diversity of the subunits. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jul 2008]

GRIN1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PP2

Missense variant where missense usually causes diseases, GRIN1

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000591 (9/152172) while in subpopulation SAS AF= 0.000414 (2/4836). AF 95% confidence interval is 0.0000887. There are 0 homozygotes in gnomad4. There are 4 alleles in male gnomad4 subpopulation. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRIN1	NM_007327.4 linkuse as main transcript	c.467G>A	p.Arg156His	missense_variant	3/20	ENST00000371561.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRIN1	ENST00000371561.8 linkuse as main transcript	c.467G>A	p.Arg156His	missense_variant	3/20	1	NM_007327.4		Q05586-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000441

AC:

AN:

249526

Hom.:

AF XY:

0.0000444

AC XY:

AN XY:

135248

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000655

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000533

Gnomad OTH exome

AF:

0.000329

GnomAD4 exome

AF:

0.0000240

AC:

AN:

1461050

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

726872

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000135

Gnomad4 OTH exome

AF:

0.0000994

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74332

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000499

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000594

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Intellectual disability, autosomal dominant 8

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Jan 04, 2024	This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 156 of the GRIN1 protein (p.Arg156His). This variant is present in population databases (rs762490192, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with GRIN1-related conditions. ClinVar contains an entry for this variant (Variation ID: 472580). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on GRIN1 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	New York Genome Center	May 14, 2021	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 15, 2017

The p.R156H variant (also known as c.467G>A), located in coding exon 3 of the GRIN1 gene, results from a G to A substitution at nucleotide position 467. The arginine at codon 156 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Aug 31, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.027

BayesDel_noAF

Benign

-0.090

Cadd

Pathogenic

Dann

Pathogenic

1.0

DEOGEN2

Uncertain

0.46

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

Eigen

Uncertain

0.40

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Benign

0.72

LIST_S2

Pathogenic

0.98

D;D;D;D;D;D;D

M_CAP

Uncertain

0.21

MetaRNN

Uncertain

0.66

D;D;D;D;D;D;D

MetaSVM

Uncertain

0.17

MutationAssessor

Benign

0.90

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

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D;D

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-2.2

N;N;N;N;N;N;N

REVEL

Uncertain

0.58

Sift

Benign

0.032

D;D;D;D;D;D;D

Sift4G

Uncertain

0.044

D;D;D;D;D;D;D

Polyphen

1.0

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

Vest4

0.62

MVP

0.85

MPC

2.3

ClinPred

0.33

GERP RS

4.0

Varity_R

0.13

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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