11-108317467-T-C
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PP3_Strong
The NM_000051.4(ATM):c.6293T>C(p.Leu2098Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000753 in 1,461,370 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 (★★).
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ATM | NM_000051.4 | c.6293T>C | p.Leu2098Pro | missense_variant | Exon 43 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 28
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251414Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135876
GnomAD4 exome AF: 0.00000753 AC: 11AN: 1461370Hom.: 0 Cov.: 30 AF XY: 0.00000688 AC XY: 5AN XY: 727014
GnomAD4 genome Cov.: 28
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:3
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This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 2098 of the ATM protein (p.Leu2098Pro). This variant is present in population databases (rs587780631, gnomAD 0.0009%). This missense change has been observed in individual(s) with breast cancer (PMID: 28779002, 32854451). ClinVar contains an entry for this variant (Variation ID: 135766). 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. -
not provided Uncertain:3
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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; Observed in an individual with bilateral breast cancer, as well as unaffected controls (Decker et al., 2017; Tiao et al., 2017; Fanale et al., 2020); This variant is associated with the following publications: (PMID: 28779002, 28652578, 32854451, 23532176) -
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Hereditary cancer-predisposing syndrome Uncertain:2
This missense variant replaces leucine with proline at codon 2098 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). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with bilateral breast cancer (PMID: 32854451), an individual affected with breast cancer and/or ovarian cancer (PMID: 34299313), and individuals unaffected with breast cancer in two case-control studies (PMID: 28779002, 33471991). This variant has been identified in 1/251414 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.L2098P variant (also known as c.6293T>C), located in coding exon 42 of the ATM gene, results from a T to C substitution at nucleotide position 6293. The leucine at codon 2098 is replaced by proline, an amino acid with similar properties. In a multi-gene panel study of patients with bilateral breast cancer, this variant was observed in 1/139 cases (Fanale D et al. Cancers (Basel), 2020 Aug;12:). In another study, this alteration was 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 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