11-108271273-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_000051.4(ATM):c.2944C>T(p.Arg982Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000164 in 1,461,598 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ATM | NM_000051.4 | c.2944C>T | p.Arg982Cys | missense_variant | Exon 20 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00 AC: 0AN: 149984Hom.: 0 Cov.: 32 FAILED QC
GnomAD3 exomes AF: 0.0000199 AC: 5AN: 251040Hom.: 0 AF XY: 0.0000295 AC XY: 4AN XY: 135652
GnomAD4 exome AF: 0.0000164 AC: 24AN: 1461598Hom.: 0 Cov.: 36 AF XY: 0.0000179 AC XY: 13AN XY: 727080
GnomAD4 genome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0AN: 149984Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 72976
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:4
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The ATM c.2944C>T (p.Arg982Cys) missense change has a maximum subpopulation frequency of 0.007% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). The in silico tool REVEL is inconclusive about a pathogenic or benign effect of this variant on protein function, and functional studies have not been performed. This variant has not been reported in individuals with ataxia telangiectasia. In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. -
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This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 982 of the ATM protein (p.Arg982Cys). This variant is present in population databases (rs587779830, gnomAD 0.007%). This missense change has been observed in individual(s) with prostate cancer or breast cancer (PMID: 33436325, 35264596). ClinVar contains an entry for this variant (Variation ID: 127363). 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. RNA analysis performed to evaluate the impact of this missense change on mRNA splicing indicates it does not significantly alter splicing (internal data). 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. -
Hereditary cancer-predisposing syndrome Uncertain:3
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This missense variant replaces arginine with cysteine at codon 982 of the ATM protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with prostate cancer (PMID: 33436325). This variant has been identified in 5/251040 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.R982C variant (also known as c.2944C>T), located in coding exon 19 of the ATM gene, results from a C to T substitution at nucleotide position 2944. The arginine at codon 982 is replaced by cysteine, an amino acid with highly dissimilar properties. This alteration was detected in 1/1135 Chinese patients with gastric cancer (Zhang C et al. J Med Genet, 2023 Aug;60:760-768), in a cohort of 151 patients diagnosed with epithelial breast cancer in the southernmost region of Thailand (Sukpan P et al. J Pers Med, 2023 Nov;13), and was detected in a cohort of 1663 Brazilian breast cancer patients who underwent hereditary multigene panel testing (Guindalini RSC et al. Sci Rep, 2022 Mar;12:4190). This variant has been reported in 2/5560 prostate cancer cases and in 0/3353 controls of European ancestry (Karlsson Q et al. Eur Urol Oncol, 2021 Aug;4:570-579), and has also been reported in the germline of 1/8920 ethnically matched normal population control subjects but was not seen in 516 samples from a study of chronic lymphocytic leukemia patients of European descent (Tiao G et al. Leukemia, 2017 Oct;31:2244-2247). This alteration has also been reported in at least one subject in a study of 13087 breast cancer cases and 5488 control individuals in the UK (Decker B et al. J Med Genet, 2017 11;54:732-741). This amino acid position is well 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. -
not provided Uncertain:1
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; In silico analysis suggests this variant may impact gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown.; Observed in individuals with prostate cancer (Karlsson et al., 2021); This variant is associated with the following publications: (PMID: 19781682, 26181193, 28779002, 33436325, 31729406) -
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