NM_000051.4:c.6235G>A
Variant summary
Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2
The NM_000051.4(ATM):c.6235G>A(p.Val2079Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00171 in 1,611,760 control chromosomes in the GnomAD database, including 16 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V2079F) has been classified as Uncertain significance.
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
Publications
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ACMG classification
Our verdict: Benign. The variant received -20 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt | 
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4  | c.6235G>A | p.Val2079Ile | missense_variant | Exon 43 of 63 | ENST00000675843.1 | NP_000042.3 | 
Ensembl
Frequencies
GnomAD3 genomes   AF:  0.00594  AC: 898AN: 151284Hom.:  9  Cov.: 28 show subpopulations 
GnomAD2 exomes  AF:  0.00252  AC: 634AN: 251386 AF XY:  0.00202   show subpopulations 
GnomAD4 exome  AF:  0.00128  AC: 1864AN: 1460360Hom.:  7  Cov.: 30 AF XY:  0.00120  AC XY: 875AN XY: 726554 show subpopulations 
Age Distribution
GnomAD4 genome   AF:  0.00592  AC: 897AN: 151400Hom.:  9  Cov.: 28 AF XY:  0.00560  AC XY: 414AN XY: 73910 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
not specified    Benign:8Other: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:6 
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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). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -
not provided    Benign:3 
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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 
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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. 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]. -
Breast and/or ovarian cancer    Benign:1 
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Malignant tumor of breast    Benign:1 
The ATM p.Val2079Ile variant was identified in 9 of 9208 proband chromosomes (frequency: 0.00119) from individuals or families with breast cancer, Hodgkin’s disease and was present in 6 of 852 control chromosomes (frequency: 0.007) from healthy individuals (Bretsky 2003, Offit 2002, Tavtigian 2009). The variant was also identified in dbSNP (ID: rs1800060) as With Benign allele, ClinVar (classified as benign by GeneDx, Ambry genetics, Invitae, PreventionGenetics), MutDB (classified as polymorphism), databases. The variant was not identified in Cosmic, LOVD 3.0, ATM-LOVD, databases. The variant was identified in control databases in 779(8 homozygous) of 276904 chromosomes at a frequency of 0.0028 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Consortium Feb 27, 2017). The variant was identified in the following populations at a frequency greater than 1%: African in 426 of 23972 chromosomes (freq: 0.018), Ashkenazi Jewish* in 143 of 10150 chromosomes (freq: 0.014). The p.Val2079 residue is not conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) do not suggest a high likelihood of impact to the protein; however, this information is not predictive enough to rule out pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a difference in splicing. The variant is located with the PIK-related kinase Armadillo-type fold functional domain increasing the likelihood that it may have clinical significance. In summary, based on the above information, the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely 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