rs142675468

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001278064.2(GRM1):ā€‹c.2496T>Cā€‹(p.Thr832=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000509 in 1,614,076 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (ā˜…ā˜…).

Frequency

Genomes: š‘“ 0.0027 ( 3 hom., cov: 32)
Exomes š‘“: 0.00028 ( 2 hom. )

Consequence

GRM1
NM_001278064.2 synonymous

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -0.825
Variant links:
Genes affected
GRM1 (HGNC:4593): (glutamate metabotropic receptor 1) This gene encodes a metabotropic glutamate receptor that functions by activating phospholipase C. 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 canonical alpha isoform of the encoded protein is a disulfide-linked homodimer whose activity is mediated by a G-protein-coupled phosphatidylinositol-calcium second messenger system. This gene may be associated with many disease states, including schizophrenia, bipolar disorder, depression, and breast cancer. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, May 2013]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.83).
BP6
Variant 6-146399535-T-C is Benign according to our data. Variant chr6-146399535-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 585958.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-0.825 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00272 (414/152242) while in subpopulation AFR AF= 0.00973 (404/41542). AF 95% confidence interval is 0.00894. There are 3 homozygotes in gnomad4. There are 188 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 3 AD,AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
GRM1NM_001278064.2 linkuse as main transcriptc.2496T>C p.Thr832= synonymous_variant 7/8 ENST00000282753.6 NP_001264993.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
GRM1ENST00000282753.6 linkuse as main transcriptc.2496T>C p.Thr832= synonymous_variant 7/81 NM_001278064.2 ENSP00000282753 P1Q13255-1

Frequencies

GnomAD3 genomes
AF:
0.00271
AC:
413
AN:
152124
Hom.:
3
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00973
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000393
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00144
GnomAD3 exomes
AF:
0.000684
AC:
172
AN:
251390
Hom.:
0
AF XY:
0.000523
AC XY:
71
AN XY:
135870
show subpopulations
Gnomad AFR exome
AF:
0.00972
Gnomad AMR exome
AF:
0.000347
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:
0.00000880
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000278
AC:
407
AN:
1461834
Hom.:
2
Cov.:
34
AF XY:
0.000252
AC XY:
183
AN XY:
727224
show subpopulations
Gnomad4 AFR exome
AF:
0.00971
Gnomad4 AMR exome
AF:
0.000402
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000719
Gnomad4 OTH exome
AF:
0.000795
GnomAD4 genome
AF:
0.00272
AC:
414
AN:
152242
Hom.:
3
Cov.:
32
AF XY:
0.00253
AC XY:
188
AN XY:
74426
show subpopulations
Gnomad4 AFR
AF:
0.00973
Gnomad4 AMR
AF:
0.000392
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00142
Alfa
AF:
0.00146
Hom.:
0
Bravo
AF:
0.00306
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 23, 2024- -
Benign, criteria provided, single submitterclinical testingAthena DiagnosticsJan 02, 2018- -
Autosomal recessive spinocerebellar ataxia 13;C4521563:Spinocerebellar ataxia 44 Benign:1
Likely benign, criteria provided, single submitterclinical testingFulgent Genetics, Fulgent GeneticsJan 06, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.83
CADD
Benign
1.8
DANN
Benign
0.59

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.

Other links and lift over

dbSNP: rs142675468; hg19: chr6-146720671; API