3-7464418-A-G

Position:

• chr3-7464418-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000844.4(GRM7):​c.1515+2696A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.175 in 152,164 control chromosomes in the GnomAD database, including 2,436 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.18 (2436 hom., cov: 31)
• Consequence: GRM7 NM_000844.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.192

Genes affected

GRM7 (HGNC:4599): (glutamate metabotropic receptor 7) L-glutamate is the major excitatory neurotransmitter in the central nervous system, and it 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 three 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. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2009]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.356 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GRM7	NM_000844.4	c.1515+2696A>G		intron_variant		ENST00000357716.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GRM7	ENST00000357716.9	c.1515+2696A>G		intron_variant		1	NM_000844.4	P1

Frequencies

GnomAD3 genomes AF: 0.175 AC: 26630 AN: 152046 Hom.: 2431 Cov.: 31

Gnomad AFR AF: 0.147

Gnomad AMI AF: 0.201

Gnomad AMR AF: 0.172

Gnomad ASJ AF: 0.226

Gnomad EAS AF: 0.117

Gnomad SAS AF: 0.370

Gnomad FIN AF: 0.189

Gnomad MID AF: 0.212

Gnomad NFE AF: 0.179

Gnomad OTH AF: 0.167

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.175 AC: 26673 AN: 152164 Hom.: 2436 Cov.: 31 AF XY: 0.177 AC XY: 13203 AN XY: 74410

Gnomad4 AFR AF: 0.147

Gnomad4 AMR AF: 0.172

Gnomad4 ASJ AF: 0.226

Gnomad4 EAS AF: 0.118

Gnomad4 SAS AF: 0.371

Gnomad4 FIN AF: 0.189

Gnomad4 NFE AF: 0.179

Gnomad4 OTH AF: 0.174

Alfa AF: 0.175 Hom.: 775

Bravo AF: 0.164

Asia WGS AF: 0.292 AC: 1016 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	6.3
DANN	Benign	0.84

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: rs1450092; hg19: chr3-7506105;