7-126532764-GATATATATATATATATATATATATATATATATATATATATAT-GATATATATATATATATATATATATATATATATATATATATATATAT

Position:

• chr7-126532764-GATATATATATATATATATATATATATATATATATATATATAT-GATATATATATATATATATATATATATATATATATATATATATATAT

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_000845.3(GRM8):​c.2430+184_2430+187dupATAT variant causes a intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0075 (16 hom., cov: 0)
• Consequence: GRM8 NM_000845.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.339

Genes affected

GRM8 (HGNC:4600): (glutamate metabotropic receptor 8) 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. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

GRM8 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• BS2: High Homozygotes in GnomAd4 at 16 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GRM8	NM_000845.3	c.2430+184_2430+187dupATAT		intron_variant		ENST00000339582.7	NP_000836.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GRM8	ENST00000339582.7	c.2430+184_2430+187dupATAT		intron_variant		5	NM_000845.3	ENSP00000344173.2

Frequencies

GnomAD3 genomes AF: 0.00747 AC: 826 AN: 110510 Hom.: 16 Cov.: 0

Gnomad AFR AF: 0.00465

Gnomad AMI AF: 0.00437

Gnomad AMR AF: 0.00484

Gnomad ASJ AF: 0.00994

Gnomad EAS AF: 0.00502

Gnomad SAS AF: 0.00472

Gnomad FIN AF: 0.000434

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0104

Gnomad OTH AF: 0.00653

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

GnomAD4 genome AF: 0.00747 AC: 826 AN: 110536 Hom.: 16 Cov.: 0 AF XY: 0.00716 AC XY: 373 AN XY: 52084

Gnomad4 AFR AF: 0.00464

Gnomad4 AMR AF: 0.00484

Gnomad4 ASJ AF: 0.00994

Gnomad4 EAS AF: 0.00504

Gnomad4 SAS AF: 0.00474

Gnomad4 FIN AF: 0.000434

Gnomad4 NFE AF: 0.0104

Gnomad4 OTH AF: 0.00649

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs521; hg19: chr7-126172818;