chr11-108289779-T-G
Variant summary
Our verdict is Likely benign. Variant got -3 ACMG points: 0P and 3B. BP4_ModerateBP6
The NM_000051.4(ATM):āc.4414T>Gā(p.Leu1472Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000831 in 1,613,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -3 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
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ATM | NM_000051.4 | c.4414T>G | p.Leu1472Val | missense_variant | Exon 29 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000854 AC: 13AN: 152230Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000758 AC: 19AN: 250738Hom.: 0 AF XY: 0.0000885 AC XY: 12AN XY: 135528
GnomAD4 exome AF: 0.0000828 AC: 121AN: 1460852Hom.: 0 Cov.: 31 AF XY: 0.0000936 AC XY: 68AN XY: 726726
GnomAD4 genome AF: 0.0000854 AC: 13AN: 152230Hom.: 0 Cov.: 32 AF XY: 0.0000941 AC XY: 7AN XY: 74372
ClinVar
Submissions by phenotype
not provided Uncertain:3Benign:1Other:1
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Variant interpreted as Likely benign and reported on 05-27-2020 by Invitae. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. -
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In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Observed in individuals with ATM-related and other cancers; however, in one patient a BRCA2 frameshift variant was also identified (Bernstein 2010, Yurgelun 2015, Decker 2017, Paulo 2018, Yehia 2018, Snow 2019); This variant is associated with the following publications: (PMID: 25980754, 28779002, 29659569, 27588518, 30309722, 30303537, 21787400, 20305132, 29684080, 31227566) -
Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
This missense variant replaces leucine with valine at codon 1472 of the ATM protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been performed for this variant. This variant has been reported in individuals affected with breast cancer (PMID: 20305132, 33606809) and Lynch syndrome-associated cancer and/or polyps (PMID: 25980754). In a large international case-control study, this variant was reported in 9/60457 breast cancer cases and 5/53456 controls (PMID: 33471991). This variant has also been identified in 24/282146 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. -
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This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
not specified Uncertain:2
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Variant summary: ATM c.4414T>G (p.Leu1472Val) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 7.6e-05 in 250738 control chromosomes. This frequency is not significantly higher than expected for a pathogenic variant in ATM causing Breast Cancer (7.6e-05 vs 0.001), allowing no conclusion about variant significance. c.4414T>G has been reported in the literature in individuals affected with breast cancer, prostate cancer, and other forms of cancer, as well as those being tested for Lynch syndrome (example, Bernstein_2010, Yurgelun_2015, Goldgar_2011, Girad_2019, Paulo_2018, Snow_2019). These reports do not provide unequivocal conclusions about association of the variant with Breast Cancer/ATM-related cancers/Ataxia Telangiectasia. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Ten clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation (likely benign, n=3, VUS, n=7). Based on the evidence outlined above, the variant was classified as uncertain significance. -
Familial cancer of breast Uncertain:1Benign:1
This variant has been reported in the literature in individuals with different types of cancer, including breast cancer (Bernstein 2010, Yurgelun 2015, Decker 2017, Yehia 2018). This variant has an overall allele frequency of 0.00008 in the Broad Institute gnomAD Browser (https://gnomad.broadinstitute.org/). In silico analyses indicate that this variant may not alter protein structure/function. Thus, it is unknown at this time whether this variant increases cancer risk. BP4 -
This variant is considered likely benign. This variant is strongly associated with less severe personal and family histories of cancer, typical for individuals without pathogenic variants in this gene [PMID: 25085752]. -
Ataxia-telangiectasia syndrome;C0346153:Familial cancer of breast Uncertain:1
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ATM-related disorder Uncertain:1
The ATM c.4414T>G variant is predicted to result in the amino acid substitution p.Leu1472Val. This particular variant has also been reported in individuals with suspected Lynch syndrome (Yurgelun et al. 2015. Table S2, PubMed ID: 25980754) and breast cancer (Girard. 2019. PubMed ID: 30303537, Supplementary Table S3; Goldgar et al. 2011. Table S1, PubMed ID: 21787400), although the latter study did not find significant association with increased breast cancer risk. This variant is reported in 0.037% of alleles in individuals of Latino descent in gnomAD. It has conflicting interpretations of likely benign and uncertain in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/127390/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -
Ataxia-telangiectasia syndrome Benign:1
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Hereditary cancer Benign:1
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Hereditary breast ovarian cancer syndrome Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at