rs3218695
Variant summary
Our verdict is Benign. The variant received -18 ACMG points: 2P and 20B. PM1BP4_StrongBP6_Very_StrongBS1BS2
The NM_000051.4(ATM):c.2442C>A(p.Asp814Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00137 in 1,613,514 control chromosomes in the GnomAD database, including 28 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D814G) 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: Benign. The variant received -18 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt | 
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4  | c.2442C>A | p.Asp814Glu | missense_variant | Exon 16 of 63 | ENST00000675843.1 | NP_000042.3 | 
Ensembl
Frequencies
GnomAD3 genomes   AF:  0.00690  AC: 1051AN: 152210Hom.:  16  Cov.: 32 show subpopulations 
GnomAD2 exomes  AF:  0.00191  AC: 480AN: 251096 AF XY:  0.00155   show subpopulations 
GnomAD4 exome  AF:  0.000791  AC: 1156AN: 1461186Hom.:  12  Cov.: 31 AF XY:  0.000713  AC XY: 518AN XY: 726908 show subpopulations 
Age Distribution
GnomAD4 genome   AF:  0.00691  AC: 1053AN: 152328Hom.:  16  Cov.: 32 AF XY:  0.00660  AC XY: 492AN XY: 74492 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
not specified    Benign:7Other:1 
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This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
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Ataxia-telangiectasia syndrome    Benign:5 
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This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -
not provided    Benign:4 
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ATM: BS1, BS2 -
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Hereditary cancer-predisposing syndrome    Benign:3 
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This alteration is classified as 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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Familial cancer of breast    Benign:2 
This variant is considered benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance. -
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Breast and/or ovarian cancer    Benign:1 
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Ataxia-telangiectasia syndrome;C0346153:Familial cancer of breast    Benign:1 
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Malignant tumor of breast    Benign:1 
The ATM p.Asp814Glu variant was identified in 1 of 9370 proband chromosomes (frequency: 0.0001) from individuals or families with breast cancer and was present in 6 of 11286 control chromosomes (frequency: 0.0005) from healthy individuals (Johnson 2007, Mangone 2015, Tavtigian 2009). The variant was also identified in the following databases: dbSNP (ID: rs3218695) as "With Benign, Likely benign allele", ClinVar (4x, benign), and Clinvitae (3x, benign). The variant was not identified in Cosmic, MutDB, LOVD 3.0, or the ATM-LOVD databases. The variant was identified in control databases in 646 of 276916 chromosomes (8 homozygous) at a frequency of 0.002 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). Observations by population include African in 567 of 24008 chromosomes (freq: 0.02), Other in 9 of 6464 chromosomes (freq: 0.001), Latino in 51 of 34412 chromosomes (freq: 0.001), European in 18 of 126598 chromosomes (freq: 0.0001), and South Asian in 1 of 30764 chromosomes (freq: 0.00003). The variant was not observed in the Ashkenazi Jewish, East Asian, or Finnish populations. The p.Asp814 residue is conserved in mammals but not in more distantly related organisms. However computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and 1 of 5 in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) predict a greater than 10% difference in splicing; this is also not very predictive of pathogenicity. In summary, based on the above information this variant meets our laboratory's criteria to be classified as benign. -
Hereditary breast ovarian cancer syndrome    Benign:1 
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Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at