11-108289785-C-G
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP3
The NM_000051.4(ATM):c.4420C>G(p.His1474Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000174 in 1,612,696 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 1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ATM | NM_000051.4 | c.4420C>G | p.His1474Asp | missense_variant | Exon 29 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152174Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000799 AC: 2AN: 250390Hom.: 0 AF XY: 0.0000148 AC XY: 2AN XY: 135370
GnomAD4 exome AF: 0.0000178 AC: 26AN: 1460522Hom.: 0 Cov.: 31 AF XY: 0.0000151 AC XY: 11AN XY: 726572
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152174Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74338
ClinVar
Submissions by phenotype
not provided Uncertain:6
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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 individuals with breast, pancreatic, or prostate cancer (PMID: 33436325, 26976419, 28726808); This variant is associated with the following publications: (PMID: 25480502, 33436325, 26976419, 28726808, 33471991, 27479817, 33875564) -
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ATM: PM2 -
Hereditary cancer-predisposing syndrome Uncertain:3
The p.H1474D variant (also known as c.4420C>G), located in coding exon 28 of the ATM gene, results from a C to G substitution at nucleotide position 4420. The histidine at codon 1474 is replaced by aspartic acid, an amino acid with similar properties. This alteration has been reported as a variant of unknown significance in a cohort of 488 patients with stages I to III breast cancer who were tested with a 25-gene panel test as well as 1/302 individuals with pancreatic cancer (Tung N et al. J Clin Oncol, 2016 May;34:1460-8; Chaffee KG et al. Genet Med, 2018 01;20:119-127). In another study, this alteration was reported in 3/60,466 breast cancer cases and in 2/53,461 controls (Dorling et al. N Engl J Med, 2021 02;384:428-439). This variant was also 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 deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
This missense variant replaces histidine with aspartic acid at codon 1474 of the ATM protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with breast cancer (PMID: 26976419) and in an individual affected with chronic lymphocytic leukemia (PMID: 27479817). In an international breast cancer case-control meta-analysis, this variant was detected in 3/60466 cases and 2/53461 unaffected controls (PMID: 33471991). This variant has been identified in 2/250390 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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Ataxia-telangiectasia syndrome Uncertain:2
This sequence change replaces histidine, which is basic and polar, with aspartic acid, which is acidic and polar, at codon 1474 of the ATM protein (p.His1474Asp). This variant is present in population databases (rs587779840, gnomAD 0.002%). This missense change has been observed in individual(s) with breast and prostate cancer (PMID: 26976419, 33436325). ClinVar contains an entry for this variant (Variation ID: 127391). 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. -
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Breast and/or ovarian cancer 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