11-88508789-G-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001143831.3(GRM5):c.3442C>A(p.Pro1148Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000024 in 1,460,308 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

GRM5
NM_001143831.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.00

Variant links:

Genes affected

GRM5 (HGNC:4597): (glutamate metabotropic receptor 5) This gene encodes a member of the G-protein coupled receptor 3 protein family. The encoded protein is a metabatropic glutamate receptor, whose signaling activates a phosphatidylinositol-calcium second messenger system. This protein may be involved in the regulation of neural network activity and synaptic plasticity. Glutamatergic neurotransmission is involved in most aspects of normal brain function and can be perturbed in many neuropathologic conditions. A pseudogene of this gene has been defined on chromosome 11. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

GRM5 links:

GRM5-AS1 (HGNC:40265): (GRM5 antisense RNA 1)

GRM5-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06857574).

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRM5	NM_001143831.3 link	c.3442C>A	p.Pro1148Thr	missense_variant	Exon 10 of 10	ENST00000305447.5	NP_001137303.1	P41594-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GRM5	ENST00000305447.5 link	c.3442C>A	p.Pro1148Thr	missense_variant	Exon 10 of 10	1	NM_001143831.3	ENSP00000306138.4	P41594-1
GRM5	ENST00000305432.9 link	c.3346C>A	p.Pro1116Thr	missense_variant	Exon 8 of 8	1		ENSP00000305905.5	P41594-2
GRM5	ENST00000455756.6 link	c.3346C>A	p.Pro1116Thr	missense_variant	Exon 9 of 9	2		ENSP00000405690.2	P41594-2
GRM5-AS1	ENST00000526448.1 link	n.4214G>T		non_coding_transcript_exon_variant	Exon 1 of 6	5

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

151894

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000563

AC:

AN:

53260

Hom.:

AF XY:

0.0000672

AC XY:

AN XY:

29778

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000144

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000229

AC:

AN:

1308414

Hom.:

Cov.:

AF XY:

0.0000233

AC XY:

AN XY:

642568

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000219

Gnomad4 NFE exome

AF:

0.0000249

Gnomad4 OTH exome

AF:

0.0000556

GnomAD4 genome

AF:

0.0000329

AC:

AN:

151894

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74198

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000442

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ExAC

AF:

0.0000101

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 22, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3442C>A (p.P1148T) alteration is located in exon 9 (coding exon 9) of the GRM5 gene. This alteration results from a C to A substitution at nucleotide position 3442, causing the proline (P) at amino acid position 1148 to be replaced by a threonine (T). 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

0.081

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Benign

0.86

DEOGEN2

Benign

0.092

.;.;T

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.64

FATHMM_MKL

Benign

0.58

LIST_S2

Benign

0.76

T;.;T

M_CAP

Uncertain

0.27

MetaRNN

Benign

0.069

T;T;T

MetaSVM

Benign

-0.79

MutationAssessor

Benign

0.0

.;.;N

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-0.31

N;N;N

REVEL

Benign

0.17

Sift

Benign

0.62

T;T;T

Sift4G

Benign

0.59

T;T;T

Polyphen

0.011

B;B;B

Vest4

0.080

MutPred

0.16

.;.;Gain of phosphorylation at P1148 (P = 0.0147);

MVP

0.32

ClinPred

0.042

GERP RS

3.5

Varity_R

0.063

gMVP

0.47

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