7-126532764-GATATATATATATATATATATATATATATATATATATATATAT-GATATATATATATATATATATATATATATATAT

Variant names:

• chr7-126532764-GATATATATAT-G
• rs521
• NM_000845.3:c.2430+178_2430+187delATATATATAT

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_000845.3(GRM8):​c.2430+178_2430+187delATATATATAT 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 0.0019 (0 hom., cov: 0)
• Consequence: GRM8 NM_000845.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.98
• Publications: 3 publications found

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]

ENSG00000287568 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000845.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRM8	NM_000845.3	MANE Select	c.2430+178_2430+187delATATATATAT		intron	N/A	NP_000836.2
	GRM8	NM_001371086.1		c.2430+178_2430+187delATATATATAT		intron	N/A	NP_001358015.1
	GRM8	NM_001127323.1		c.2430+178_2430+187delATATATATAT		intron	N/A	NP_001120795.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRM8	ENST00000339582.7	TSL:5 MANE Select	c.2430+178_2430+187delATATATATAT		intron	N/A	ENSP00000344173.2
	GRM8	ENST00000358373.8	TSL:1	c.2430+178_2430+187delATATATATAT		intron	N/A	ENSP00000351142.3
	GRM8	ENST00000341617.7	TSL:1	n.*995+178_*995+187delATATATATAT		intron	N/A	ENSP00000345747.3

Frequencies

GnomAD3 genomes AF: 0.00189 AC: 210 AN: 110896 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00325

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00271

Gnomad ASJ AF: 0.000354

Gnomad EAS AF: 0.00105

Gnomad SAS AF: 0.00125

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00140

Gnomad OTH AF: 0.000651

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

GnomAD4 genome AF: 0.00189 AC: 210 AN: 110922 Hom.: 0 Cov.: 0 AF XY: 0.00178 AC XY: 93 AN XY: 52282

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00324 AC: 98 AN: 30220

American (AMR) AF: 0.00271 AC: 26 AN: 9594

Ashkenazi Jewish (ASJ) AF: 0.000354 AC: 1 AN: 2822

East Asian (EAS) AF: 0.00106 AC: 4 AN: 3784

South Asian (SAS) AF: 0.00126 AC: 4 AN: 3176

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 4616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 226

European-Non Finnish (NFE) AF: 0.00140 AC: 76 AN: 54248

Other (OTH) AF: 0.000647 AC: 1 AN: 1546

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 267

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.0

Splicing

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

Other links and lift over

dbSNP: rs521; hg19: chr7-126172818;