rs767507047
Variant summary
Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_000051.4(ATM):c.8861A>G(p.Tyr2954Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000031 in 1,613,972 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y2954H) has been classified as Uncertain significance.
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
Publications
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ACMG classification
Our verdict: Uncertain_significance. The variant received 4 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | c.8861A>G | p.Tyr2954Cys | missense_variant | Exon 62 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152162Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000796 AC: 2AN: 251342 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461810Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4AN XY: 727208 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152162Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74336 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2
This missense variant replaces tyrosine with cysteine at codon 2954 of the ATM protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has been identified in 3/282746 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
The p.Y2954C variant (also known as c.8861A>G), located in coding exon 61 of the ATM gene, results from an A to G substitution at nucleotide position 8861. The tyrosine at codon 2954 is replaced by cysteine, an amino acid with highly dissimilar 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. Based on the available evidence, the clinical significance of this variant remains unclear. -
Ataxia-telangiectasia syndrome Uncertain:1
This sequence change replaces tyrosine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 2954 of the ATM protein (p.Tyr2954Cys). This variant is present in population databases (rs767507047, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with ATM-related conditions. ClinVar contains an entry for this variant (Variation ID: 418049). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt ATM protein function with a positive predictive value of 95%. 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. -
not provided Uncertain:1
This variant is denoted ATM c.8861A>G at the cDNA level, p.Tyr2954Cys (Y2954C) at the protein level, and results in the change of a Tyrosine to a Cysteine (TAT>TGT). This variant was observed in the tumors of multiple patients with chronic lymphocytic leukemia (Landau 2013, Skowronska 2012, Austen 2007). ATM Tyr2954Cys 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. Since Tyrosine and Cysteine differ in polarity, charge, size or other properties, this is considered a non-conservative amino acid substitution. ATM Tyr2954Cys occurs at a position that is conserved across species and is located within the PI3-PI4 kinase domain (Tavtigian 2009). In silico analyses predict that this variant is probably damaging to protein structure and function. Based on currently available information, it is unclear whether ATM Tyr2954Cys is pathogenic or benign. We consider it to be a variant of uncertain significance. -
Familial colorectal cancer type X Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at