rs587779867
Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBP6
The NM_000051.4(ATM):āc.7778A>Gā(p.Gln2593Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000044 in 1,613,732 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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 -5 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ATM | NM_000051.4 | c.7778A>G | p.Gln2593Arg | missense_variant | Exon 52 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000723 AC: 11AN: 152198Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000837 AC: 21AN: 250896Hom.: 0 AF XY: 0.0000737 AC XY: 10AN XY: 135608
GnomAD4 exome AF: 0.0000411 AC: 60AN: 1461534Hom.: 0 Cov.: 31 AF XY: 0.0000440 AC XY: 32AN XY: 727058
GnomAD4 genome AF: 0.0000723 AC: 11AN: 152198Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74370
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:3Benign:1
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This missense variant replaces glutamine with arginine at codon 2593 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: 25503501, 28503720, 28779002, 30883245, 33471991, 34299313). This variant has also been identified in 21/250896 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. -
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. -
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Ataxia-telangiectasia syndrome Uncertain:2Benign:1
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Familial cancer of breast Uncertain:2
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This variant has been reported in the literature in several individuals with breast cancer (Maxwell 2015, Rummel 2017, Decker 2017). This variant has an overall allele frequency of 0.00008 in the Broad Institute gnomAD Browser (https://gnomad.broadinstitute.org/). In silico analyses indicate this is an evolutionarily conserved residue. PP3 -
not provided Uncertain:1Benign:1
In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 25503501, 28503720, 28779002, 30883245, 36845387) -
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not specified Uncertain:1
Variant summary: ATM c.7778A>G (p.Gln2593Arg) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 8.4e-05 in 250896 control chromosomes. This frequency is not significantly higher than expected for a pathogenic variant in ATM causing Breast Cancer (8.4e-05 vs 0.001), allowing no conclusion about variant significance. c.7778A>G has been reported in the literature with classifications ranging from likely benign (example, Maxwell_2014) to VUS (example, Guglielmi_2021) in settings of multigene panel testing of individuals affected with BRCA1/2 negative breast and/or ovarian cancer. It has also been reported in the FLOSSIES database among cancer free women who are older than age 70. These report(s) do not provide unequivocal conclusions about association of the variant with Ataxia Telangiectasia/Breast Cancer/ATM-related disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (likely benign, n=2; VUS, n=5). Based on the evidence outlined above, the variant was classified as VUS-possibly benign. -
Hereditary cancer Benign:1
This variant is considered likely benign or benign based on one or more of the following: it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease, and/or has normal protein function, and/or has lack of segregation with disease, and/or has been detected in co-occurrence with known pathogenic variant, and/or has lack of disease association in case-control studies, and/or is located in a region inconsistent with a known cause of pathogenicity. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at