rs796052553
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP6BS2
The NM_001134407.3(GRIN2A):c.2695C>T(p.Arg899Trp) variant causes a missense change. The variant allele was found at a frequency of 0.00000496 in 1,614,046 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R899Q) has been classified as Uncertain significance.
Frequency
Consequence
NM_001134407.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GRIN2A | NM_001134407.3 | c.2695C>T | p.Arg899Trp | missense_variant | 13/13 | ENST00000330684.4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GRIN2A | ENST00000330684.4 | c.2695C>T | p.Arg899Trp | missense_variant | 13/13 | 1 | NM_001134407.3 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000197 AC: 3AN: 152180Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251390Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135860
GnomAD4 exome AF: 0.00000342 AC: 5AN: 1461866Hom.: 0 Cov.: 34 AF XY: 0.00000688 AC XY: 5AN XY: 727232
GnomAD4 genome ? AF: 0.0000197 AC: 3AN: 152180Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74336
ClinVar
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Jun 25, 2014 | p.Arg899Trp (CGG>TGG): c.2695 C>T in exon 14 of the GRIN2A gene (NM_000833.3). The R899W variant has not been published as a mutation, nor has it been reported as a benign polymorphism to our knowledge. It was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The R899W variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved across mammals, and a missense mutation in a nearby residue (I904F) has been reported in association with a GRIN2A-related disorder. Additionally, in silico analysis predicts this variant is probably damaging to the protein structure/function. Based on the currently available information, it is unclear whether this variant is a pathogenic mutation or a rare benign variant.The variant is found in EPILEPSY panel(s). - |
Landau-Kleffner syndrome Benign:1
Benign, criteria provided, single submitter | clinical testing | Invitae | Dec 13, 2023 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at