rs147472613
Variant summary
Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.
The NM_000051.4(ATM):c.1271C>A(p.Pro424His) variant causes a missense change. The variant allele was found at a frequency of 0.0000106 in 1,608,144 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P424A) has been classified as Uncertain significance.
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
Publications
- hereditary breast carcinomaInheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics, ClinGen
- ataxia telangiectasiaInheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, ClinGen, Laboratory for Molecular Medicine, Orphanet
- hereditary nonpolyposis colon cancerInheritance: AD Classification: MODERATE, LIMITED Submitted by: ClinGen, Ambry Genetics
- prostate cancerInheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- sarcomaInheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
- familial ovarian cancerInheritance: AD Classification: LIMITED Submitted by: ClinGen
- gastric carcinomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Uncertain_significance. The variant received 0 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | c.1271C>A | p.Pro424His | missense_variant | Exon 10 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000201 AC: 3AN: 149418Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000161 AC: 4AN: 248784 AF XY: 0.0000223 show subpopulations
GnomAD4 exome AF: 0.00000960 AC: 14AN: 1458726Hom.: 0 Cov.: 35 AF XY: 0.00000964 AC XY: 7AN XY: 725820 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000201 AC: 3AN: 149418Hom.: 0 Cov.: 32 AF XY: 0.0000275 AC XY: 2AN XY: 72616 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:3
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 individuals with prostate or breast cancer (PMID: 33436325, 30086788); This variant is associated with the following publications: (PMID: 30613976, 29866652, 28652578, 30086788, 33436325, 25186627) -
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ATM: PM2 -
Hereditary cancer-predisposing syndrome Uncertain:2
This missense variant replaces proline with histidine at codon 424 of the ATM protein. Computational prediction suggests that this variant may not impact protein structure and function. To our knowledge, functional studies have not been reported for this variant. This variant has been observed in an individual with female breast cancer (PMID: 30086788), male breast cancer (PMID: 30613976), and prostate cancer (PMID: 33436325). This variant has been identified in 6/279764 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.P424H variant (also known as c.1271C>A), located in coding exon 9 of the ATM gene, results from a C to A substitution at nucleotide position 1271. The proline at codon 424 is replaced by histidine, an amino acid with similar properties. This alteration has been reported in individuals with breast cancer, including male breast cancer (Tung N et al. Cancer, 2015 Jan;121:25-33; Penkert J et al. Breast Cancer Res, 2018 Aug;20:87; Rizzolo P et al. Int J Cancer, 2019 Jul;145:390-400). This alteration was also detected in both the germline and the tumor in a female diagnosed with ovarian cancer (Coombs CC et al. Clin. Cancer Res., 2018 Jun). This variant was reported in 1/5560 prostate cancer cases and in 0/3353 controls of European ancestry (Karlsson Q et al. Eur Urol Oncol, 2021 Aug;4:570-579). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Ataxia-telangiectasia syndrome Uncertain:1Benign:1
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Familial cancer of breast Uncertain:1Benign:1
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]. -
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not specified Uncertain:1
Variant summary: ATM c.1271C>A (p.Pro424His) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 1.6e-05 in 248784 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.1271C>A has been reported in the literature in individuals affected with Breast Cancer (Penkert_2018, Tung_2015), however without strong evidence of causality. These reports therefore, do not provide unequivocal conclusions about association of the variant with Breast Cancer. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four ClinVar submitters (evaluation after 2014) cite the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -
Familial colorectal cancer type X Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at