dbSNP rs148688400: GRIN1:p.Cys22Trp (chr9-137139552-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_007327.4(GRIN1):c.66C>G(p.Cys22Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,459,350 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C22Y) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

GRIN1
NM_007327.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.14

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

neurodevelopmental disorder with or without hyperkinetic movements and seizures, autosomal dominant
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
complex neurodevelopmental disorder
Inheritance: AR, AD Classification: DEFINITIVE Submitted by: ClinGen
neurodevelopmental disorder with or without hyperkinetic movements and seizures, autosomal recessive
Inheritance: AR Classification: DEFINITIVE, MODERATE Submitted by: G2P, Ambry Genetics
developmental and epileptic encephalopathy 101
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
autosomal dominant non-syndromic intellectual disability
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

GRIN1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRIN1	NM_007327.4 link	c.66C>G	p.Cys22Trp	missense_variant	Exon 1 of 20	ENST00000371561.8	NP_015566.1	Q05586-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GRIN1	ENST00000371561.8 link	c.66C>G	p.Cys22Trp	missense_variant	Exon 1 of 20	1	NM_007327.4	ENSP00000360616.3		Q05586-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1459350

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725990

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33462

American (AMR)

AF:

0.00

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26114

East Asian (EAS)

AF:

0.00

AC:

AN:

39680

South Asian (SAS)

AF:

0.00

AC:

AN:

86222

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51984

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111094

Other (OTH)

AF:

0.00

AC:

AN:

60324

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.69

BayesDel_addAF

Benign

-0.087

BayesDel_noAF

Benign

-0.36

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.68

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

Eigen

Uncertain

0.21

Eigen_PC

Benign

0.16

FATHMM_MKL

Benign

0.25

LIST_S2

Pathogenic

0.98

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

M_CAP

Pathogenic

0.31

MetaRNN

Uncertain

0.74

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

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.97

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

PhyloP100

1.1

PrimateAI

Pathogenic

0.92

PROVEAN

Uncertain

-3.3

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

REVEL

Uncertain

0.30

Sift

Benign

0.031

D;D;T;D;D;D;D

Sift4G

Uncertain

0.014

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

Polyphen

1.0

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

Vest4

0.64

MutPred

0.56

Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);

MVP

0.47

MPC

2.8

ClinPred

0.96

GERP RS

2.1

PromoterAI

-0.017

Neutral

(source)

Varity_R

0.44

gMVP

0.85

Mutation Taster

=43/57

disease causing

(source)

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

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rs148688400

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over