4-157303674-A-G
Variant names:
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate
The NM_001083619.3(GRIA2):c.352A>G(p.Thr118Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
Frequency
Genomes: not found (cov: 32)
Consequence
GRIA2
NM_001083619.3 missense
NM_001083619.3 missense
Scores
4
15
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: 4.58
Genes affected
GRIA2 (HGNC:4572): (glutamate ionotropic receptor AMPA type subunit 2) Glutamate receptors are the predominant excitatory neurotransmitter receptors in the mammalian brain and are activated in a variety of normal neurophysiologic processes. This gene product belongs to a family of glutamate receptors that are sensitive to alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA), and function as ligand-activated cation channels. These channels are assembled from 4 related subunits, GRIA1-4. The subunit encoded by this gene (GRIA2) is subject to RNA editing (CAG->CGG; Q->R) within the second transmembrane domain, which is thought to render the channel impermeable to Ca(2+). Human and animal studies suggest that pre-mRNA editing is essential for brain function, and defective GRIA2 RNA editing at the Q/R site may be relevant to amyotrophic lateral sclerosis (ALS) etiology. Alternative splicing, resulting in transcript variants encoding different isoforms, (including the flip and flop isoforms that vary in their signal transduction properties), has been noted for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the GRIA2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 23 curated pathogenic missense variants (we use a threshold of 10). The gene has 7 curated benign missense variants. Gene score misZ: 4.5573 (above the threshold of 3.09). Trascript score misZ: 5.479 (above the threshold of 3.09). GenCC associations: The gene is linked to neurodevelopmental disorder with language impairment and behavioral abnormalities.
BP4
Computational evidence support a benign effect (MetaRNN=0.21902475).
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome
GnomAD4 genome
Cov.:
32
ClinVar
Not reported inComputational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
.;.;.;.;.;T;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
.;D;D;D;D;D;D
M_CAP
Benign
D
MetaRNN
Benign
T;T;T;T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
.;.;.;N;N;N;.
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N;.;N;N;N
REVEL
Benign
Sift
Benign
T;T;T;.;T;T;T
Sift4G
Benign
T;T;T;.;T;T;T
Polyphen
0.0
.;.;.;.;B;B;.
Vest4
MutPred
0.37
.;.;Loss of glycosylation at T118 (P = 0.068);Loss of glycosylation at T118 (P = 0.068);Loss of glycosylation at T118 (P = 0.068);Loss of glycosylation at T118 (P = 0.068);.;
MVP
MPC
0.60
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.