11-108287697-A-G
Variant summary
Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4
The NM_000051.4(ATM):c.4091A>G(p.Asp1364Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000411 in 1,460,068 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D1364E) 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 -1 ACMG points.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_000051.4. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | MANE Select | c.4091A>G | p.Asp1364Gly | missense | Exon 27 of 63 | NP_000042.3 | ||
| ATM | NM_001351834.2 | c.4091A>G | p.Asp1364Gly | missense | Exon 28 of 64 | NP_001338763.1 |
Ensembl Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| ATM | ENST00000675843.1 | MANE Select | c.4091A>G | p.Asp1364Gly | missense | Exon 27 of 63 | ENSP00000501606.1 | ||
| ATM | ENST00000452508.7 | TSL:1 | c.4091A>G | p.Asp1364Gly | missense | Exon 28 of 64 | ENSP00000388058.2 | ||
| ATM | ENST00000531525.3 | TSL:1 | c.4091A>G | p.Asp1364Gly | missense | Exon 27 of 30 | ENSP00000434327.3 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.00000805 AC: 2AN: 248572 AF XY: 0.00000743 show subpopulations
GnomAD4 exome AF: 0.00000411 AC: 6AN: 1460068Hom.: 0 Cov.: 29 AF XY: 0.00000551 AC XY: 4AN XY: 726470 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:5
The ATM c.4091A>G; p.Asp1364Gly variant (rs751169467), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 236715). This variant is found on two chromosomes in the Genome Aggregation Database, indicating it is not a common polymorphism. The aspartate at codon 1364 is weakly conserved but computational analyses (SIFT: damaging, PolyPhen-2: tolerated) predict conflicting effects of this variant on protein structure/function. Due to limited information, the clinical significance of the p.Asp1364Gly variant is uncertain at this time.
This sequence change replaces aspartic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 1364 of the ATM protein (p.Asp1364Gly). This variant is present in population databases (rs751169467, gnomAD 0.003%). This missense change has been observed in individual(s) with a personal and/or family history suggestive of Lynch syndrome and/or breast cancer (PMID: 25186627, 25980754, 35534704, 35957908). ClinVar contains an entry for this variant (Variation ID: 236715). 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) indicates that this missense variant is not expected to disrupt ATM protein function with a negative predictive value of 95%. 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.
ACMG classification criteria: PM2 moderate, BP4 supporting
Hereditary cancer-predisposing syndrome Uncertain:3
This missense variant replaces aspartic acid with glycine at codon 1364 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 reported for this variant. This variant has been reported in an individual affected with Lynch syndrome-associated cancer and/or colorectal polyps (PMID: 25980754). This variant has been identified in 2/248572 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.D1364G variant (also known as c.4091A>G), located in coding exon 26 of the ATM gene, results from an A to G substitution at nucleotide position 4091. The aspartic acid at codon 1364 is replaced by glycine, an amino acid with similar properties. This alteration was identified in multiple individuals diagnosed with breast cancer (Tung N et al. Cancer, 2015 Jan;121:25-33; Dorling et al. N Engl J Med. 2021 02;384:428-439). This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear.
not provided Uncertain:2
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 cancer or Lynch syndrome-associated cancer and/or polyps (Yurgelun et al., 2015; Tung et al., 2015; Guindalini et al., 2022); This variant is associated with the following publications: (PMID: 25326804, 25980754, 25186627, 35264596)
not specified Uncertain:1
Variant summary: ATM c.4091A>G (p.Asp1364Gly) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 8e-06 in 248572 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.4091A>G has been reported in the literature as a VUS in settings of multigene panel testing of individuals affected with breast cancer and colorectal cancer (example, Tung_2015, Yurgelun_2015). These reports do not provide unequivocal conclusions about association of the variant with Ataxia-Telangiectasia or ATM-related disorders. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Eight clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance.
Malignant tumor of breast Uncertain:1
The ATM p.Asp1364Gly variant was identified in 1 of 2520 proband chromosomes (frequency: 0.0004) from individuals or families with Lynch syndrome (Yurgelun 2015). The variant was also identified in dbSNP (ID: rs751169467) as "With Uncertain significance allele", and in ClinVar (classified as uncertain significance by Invitae, Ambry Genetics and three other submitters). The variant was not identified in LOVD 3.0. The variant was identified in control databases in 2 of 243350 chromosomes at a frequency of 0.000008 (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: Other in 1 of 5450 chromosomes (freq: 0.0002), Latino in 1 of 33548 chromosomes (freq: 0.00003), while the variant was not observed in the African, European, Ashkenazi Jewish, East Asian, Finnish, and South Asian populations. The p.Asp1364 residue is not conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance.
Familial cancer of breast Benign: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].
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at