rs1060503232
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2
The NM_001134407.3(GRIN2A):c.2749T>G(p.Ser917Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Consequence
GRIN2A
NM_001134407.3 missense
NM_001134407.3 missense
Scores
4
4
10
Clinical Significance
Conservation
PhyloP100: 8.84
Genes affected
GRIN2A (HGNC:4585): (glutamate ionotropic receptor NMDA type subunit 2A) This gene encodes a member of the glutamate-gated ion channel protein family. The encoded protein is an N-methyl-D-aspartate (NMDA) receptor subunit. NMDA receptors are both ligand-gated and voltage-dependent, and are involved in long-term potentiation, an activity-dependent increase in the efficiency of synaptic transmission thought to underlie certain kinds of memory and learning. These receptors are permeable to calcium ions, and activation results in a calcium influx into post-synaptic cells, which results in the activation of several signaling cascades. Disruption of this gene is associated with focal epilepsy and speech disorder with or without cognitive disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 3 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, GRIN2A
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GRIN2A | NM_001134407.3 | c.2749T>G | p.Ser917Ala | missense_variant | 13/13 | ENST00000330684.4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GRIN2A | ENST00000330684.4 | c.2749T>G | p.Ser917Ala | missense_variant | 13/13 | 1 | NM_001134407.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251396Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135860
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GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461866Hom.: 0 Cov.: 34 AF XY: 0.00000275 AC XY: 2AN XY: 727244
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
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Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Landau-Kleffner syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Mar 12, 2018 | This sequence change replaces serine with alanine at codon 917 of the GRIN2A protein (p.Ser917Ala). The serine residue is highly conserved and there is a moderate physicochemical difference between serine and alanine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with GRIN2A-related disease. ClinVar contains an entry for this variant (Variation ID: 411294). Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Uncertain
Dann
Uncertain
DEOGEN2
Benign
T;.;.;T
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
M_CAP
Pathogenic
D
MetaRNN
Uncertain
T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Uncertain
M;.;M;M
MutationTaster
Benign
D;D;D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;.;N;N
REVEL
Benign
Sift
Benign
T;.;T;T
Sift4G
Benign
T;T;T;T
Polyphen
D;.;.;D
Vest4
MutPred
Loss of phosphorylation at S917 (P = 0.0023);.;Loss of phosphorylation at S917 (P = 0.0023);Loss of phosphorylation at S917 (P = 0.0023);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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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