rs769959260
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_000051.4(ATM):c.8774G>A(p.Gly2925Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,592 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ATM | NM_000051.4 | c.8774G>A | p.Gly2925Asp | missense_variant | Exon 60 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome AF: 6.85e-7 AC: 1AN: 1460592Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0AN XY: 726714
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:3
The observed missense c.8774G>Ap.Gly2925Asp variant in ATM gene has not been reported previously as a pathogenic variant nor a benign variant, to our knowledge. The p.Gly2925Asp variant is absent in gnomAD Exomes. This variant has been submitted to the ClinVar database as Uncertain Significance. Multiple lines of computational evidences Polyphen - Probably damaging, SIFT - Damaging and MutationTaster - Disease causing predict a damaging effect on protein structure and function for this variant. The reference amino acid change at this position on ATM gene is predicted as conserved by GERP++ and PhyloP across 100 vertebrates. The amino acid Gly at position 2925 is changed to a Asp changing protein sequence and it might alter its composition and physico-chemical properties. For these reasons, this variant has been classified as a Variant of Uncertain Significance VUS. -
This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 2925 of the ATM protein (p.Gly2925Asp). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with ATM-related conditions. This missense change has been observed to co-occur in individuals with a different variant in ATM that has been determined to be pathogenic (Invitae), but the significance of this finding is unclear. ClinVar contains an entry for this variant (Variation ID: 577975). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -
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Hereditary cancer-predisposing syndrome Uncertain:1
The p.G2925D variant (also known as c.8774G>A), located in coding exon 59 of the ATM gene, results from a G to A substitution at nucleotide position 8774. The glycine at codon 2925 is replaced by aspartic acid, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at