rs77812749

chr9-137145857-G-A

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_Moderate BP6_Very_Strong BP7 BS1

The NM_007327.4(GRIN1):c.525G>A(p.Ala175=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000343 in 1,610,350 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0015 (1 hom., cov: 34)
  • Exomes 𝑓: 0.00022 (0 hom.)
• Consequence: GRIN1 NM_007327.4 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: -0.493

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]

ACMG classification

Verdict is Benign. Variant got -15 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.46).
• BP6: Variant 9-137145857-G-A is Benign according to our data. Variant chr9-137145857-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 240835.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.493 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00152 (232/152282) while in subpopulation AFR AF= 0.00513 (213/41552). AF 95% confidence interval is 0.00456. There are 1 homozygotes in gnomad4. There are 112 alleles in male gnomad4 subpopulation. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRIN1	NM_007327.4	c.525G>A	p.Ala175=	synonymous_variant	3/20	ENST00000371561.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRIN1	ENST00000371561.8	c.525G>A	p.Ala175=	synonymous_variant	3/20	1	NM_007327.4

Frequencies

GnomAD3 genomes AF: 0.00150 AC: 229 AN: 152164 Hom.: 1 Cov.: 34

Gnomad AFR AF: 0.00507

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000416 AC: 100 AN: 240220 Hom.: 0 AF XY: 0.000276 AC XY: 36 AN XY: 130600

Gnomad AFR exome AF: 0.00488

Gnomad AMR exome AF: 0.000238

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000281

Gnomad SAS exome AF: 0.000101

Gnomad FIN exome AF: 0.0000495

Gnomad NFE exome AF: 0.0000647

Gnomad OTH exome AF: 0.000340

GnomAD4 exome AF: 0.000219 AC: 320 AN: 1458068 Hom.: 0 Cov.: 34 AF XY: 0.000171 AC XY: 124 AN XY: 725100

Gnomad4 AFR exome AF: 0.00562

Gnomad4 AMR exome AF: 0.000203

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000329

Gnomad4 SAS exome AF: 0.000105

Gnomad4 FIN exome AF: 0.000170

Gnomad4 NFE exome AF: 0.0000531

Gnomad4 OTH exome AF: 0.000515

GnomAD4 genome AF: 0.00152 AC: 232 AN: 152282 Hom.: 1 Cov.: 34 AF XY: 0.00150 AC XY: 112 AN XY: 74468

Gnomad4 AFR AF: 0.00513

Gnomad4 AMR AF: 0.000653

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000606 Hom.: 0

Bravo AF: 0.00145

Asia WGS AF: 0.00144 AC: 5 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Mar 13, 2017

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Inborn genetic diseases Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 08, 2016

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

May 01, 2022

GRIN1: BP4, BP7 -

Intellectual disability, autosomal dominant 8 Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Feb 01, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.46
Cadd	Benign	12
Dann	Benign	0.96

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: rs77812749; hg19: chr9-140040309;