NM_000051.4:c.8860T>C
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate
The NM_000051.4(ATM):c.8860T>C(p.Tyr2954His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,792 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. Y2954C) 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 2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | c.8860T>C | p.Tyr2954His | missense_variant | Exon 62 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.00000398 AC: 1AN: 251346 AF XY: 0.00000736 show subpopulations
GnomAD4 exome AF: 0.00000410 AC: 6AN: 1461792Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 727202 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:2
This sequence change replaces tyrosine, which is neutral and polar, with histidine, which is basic and polar, at codon 2954 of the ATM protein (p.Tyr2954His). This variant is present in population databases (rs371619067, gnomAD 0.002%). 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: 232777). 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) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on ATM protein function. 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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not provided Uncertain:2
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 28779002, 23532176, 29684080, 26689913, 28569218, 34359559) -
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Hereditary cancer-predisposing syndrome Uncertain:2
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The p.Y2954H variant (also known as c.8860T>C), located in coding exon 61 of the ATM gene, results from a T to C substitution at nucleotide position 8860. The tyrosine at codon 2954 is replaced by histidine, an amino acid with similar properties. This variant was identified in 2 of 13087 breast cancer cases and 1 of 5488 control individuals in the UK (Decker B et al. J Med Genet, 2017 Nov;54:732-741). 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. -
not specified Uncertain:1
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Familial cancer of breast Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at