Variant 7-86786591-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000840.3(GRM3):c.799C>T(p.Pro267Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,378 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

GRM3
NM_000840.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.87

Variant links:

Genes affected

GRM3 (HGNC:4595): (glutamate metabotropic receptor 3) L-glutamate is the major excitatory neurotransmitter in the central nervous system and activates both ionotropic and metabotropic glutamate receptors. Glutamatergic neurotransmission is involved in most aspects of normal brain function and can be perturbed in many neuropathologic conditions. The metabotropic glutamate receptors are a family of G protein-coupled receptors, that have been divided into 3 groups on the basis of sequence homology, putative signal transduction mechanisms, and pharmacologic properties. Group I includes GRM1 and GRM5 and these receptors have been shown to activate phospholipase C. Group II includes GRM2 and GRM3 while Group III includes GRM4, GRM6, GRM7 and GRM8. Group II and III receptors are linked to the inhibition of the cyclic AMP cascade but differ in their agonist selectivities. [provided by RefSeq, Jul 2008]

GRM3 links:

GRM3-AS1 (HGNC:40264): (GRM3 antisense RNA 1)

GRM3-AS1 links:

LOC105375382 (HGNC:):

LOC105375382 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRM3	NM_000840.3 linkuse as main transcript	c.799C>T	p.Pro267Ser	missense_variant	3/6	ENST00000361669.7
LOC105375382	XR_007060408.1 linkuse as main transcript	n.591G>A		non_coding_transcript_exon_variant	2/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRM3	ENST00000361669.7 linkuse as main transcript	c.799C>T	p.Pro267Ser	missense_variant	3/6	1	NM_000840.3	P1	Q14832-1
GRM3-AS1	ENST00000418031.2 linkuse as main transcript	n.1062G>A		non_coding_transcript_exon_variant	3/4	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461378

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727018

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 30, 2024

The c.799C>T (p.P267S) alteration is located in exon 3 (coding exon 2) of the GRM3 gene. This alteration results from a C to T substitution at nucleotide position 799, causing the proline (P) at amino acid position 267 to be replaced by a serine (S). 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

0.18

BayesDel_addAF

Uncertain

0.062

BayesDel_noAF

Benign

-0.15

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.68

D;.;.

Eigen

Benign

0.029

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.93

D;D;D

M_CAP

Benign

0.014

MetaRNN

Uncertain

0.51

D;D;D

MetaSVM

Benign

-0.63

MutationAssessor

Benign

0.030

N;.;N

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.71

PROVEAN

Uncertain

-3.4

D;D;D

REVEL

Uncertain

0.40

Sift

Benign

0.24

T;T;T

Sift4G

Benign

0.27

T;T;T

Polyphen

0.020

B;.;.

Vest4

0.28

MutPred

0.58

Gain of MoRF binding (P = 0.0394);.;Gain of MoRF binding (P = 0.0394);

MVP

0.69

MPC

1.2

ClinPred

0.81

GERP RS

5.2

Varity_R

0.62

gMVP

0.74

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

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