rs34083085
Variant summary
Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6
The NM_000051.4(ATM):c.1138T>A(p.Tyr380Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000192 in 1,613,388 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. 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. Y380C) has been classified as Likely benign.
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: Likely_benign. The variant received -5 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | c.1138T>A | p.Tyr380Asn | missense_variant | Exon 9 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152214Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000119 AC: 3AN: 251284 AF XY: 0.0000221 show subpopulations
GnomAD4 exome AF: 0.0000192 AC: 28AN: 1461174Hom.: 0 Cov.: 33 AF XY: 0.0000179 AC XY: 13AN XY: 726952 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152214Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74362 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:3
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Observed in individuals with breast cancer or rectal cancer, but also observed in healthy controls (PMID: 16832357, 19781682, 25186627, 28779002, 27978560, 28652578, 33471991); Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis indicates that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 25186627, 22529920, 27978560, 19781682, 28779002, 16832357, 28652578, 33471991) -
Ataxia-telangiectasia syndrome Uncertain:1Benign:1
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Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
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. -
This missense variant replaces tyrosine with asparagine at codon 380 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 identified in individuals affected with breast cancer (PMID: 28779002, 33471991), colorectal cancer (PMID: 27978560), and healthy controls (PMID: 16832357, 28779002, 33471991). This variant has been identified in 4/282678 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. -
Familial cancer of breast Uncertain:1Benign:1
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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]. -
not specified Uncertain:1
Variant summary: ATM c.1138T>A (p.Tyr380Asn) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 1.9e-05 in 257124 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.1138T>A has been reported in the literature in individuals affected with Breast Cancer or Colorectal Cancer, as well as unaffected controls (e.g. Tung_2015, Pearlman_2016, Dorling_2021). To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 19781682, 22529920, 16832357, 27978560, 33471991, 25186627). ClinVar contains an entry for this variant (Variation ID: 127331). Based on the evidence outlined above, the variant was classified as uncertain significance. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at