NM_000051.4:c.6108T>C
Variant summary
Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1
The NM_000051.4(ATM):c.6108T>C(p.Tyr2036Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000131 in 1,614,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000051.4 synonymous
Scores
Clinical Significance
Conservation
Publications
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ACMG classification
Our verdict: Benign. The variant received -9 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt | 
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | c.6108T>C | p.Tyr2036Tyr | synonymous_variant | Exon 42 of 63 | ENST00000675843.1 | NP_000042.3 | 
Ensembl
Frequencies
GnomAD3 genomes  0.000237  AC: 36AN: 152210Hom.:  0  Cov.: 31 show subpopulations 
GnomAD2 exomes  AF:  0.000267  AC: 67AN: 251388 AF XY:  0.000250   show subpopulations 
GnomAD4 exome  AF:  0.000120  AC: 176AN: 1461832Hom.:  0  Cov.: 32 AF XY:  0.000122  AC XY: 89AN XY: 727220 show subpopulations 
Age Distribution
GnomAD4 genome  0.000236  AC: 36AN: 152328Hom.:  0  Cov.: 31 AF XY:  0.000255  AC XY: 19AN XY: 74494 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
not provided    Benign:4 
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ATM: BP4, BP7 -
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Hereditary cancer-predisposing syndrome    Benign:3 
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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. -
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Ataxia-telangiectasia syndrome    Uncertain:1Benign:1 
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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. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -
not specified    Benign:2 
Classification criteria: BS1+BP4+BP7 -
Variant summary: ATM c.6108T>C alters a non-conserved nucleotide resulting in a synonymous change. The variant allele was found at a frequency of 0.00027 in 251388 control chromosomes, predominantly within the East Asian subpopulation at a frequency of 0.0034 in the gnomAD database. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 3-fold of the estimated maximal expected allele frequency for a pathogenic variant in ATM causing Breast Cancer phenotype (0.001), strongly suggesting that the variant is a benign polymorphism found primarily in populations of East Asian origin. Moreover, the variant was also reported in Japanese healthy controls with an even higher frequency (i.e. 0.005), further supporting that the variant is a benign polymorphism found primarily in populations of East Asian origin (HGVD). In a recent case-control association study the variant was found at a similar frequency in female breast cancer patients (44/7051) and controls (67/11241) of Japanese ancestry, and the variant was indicated to be not associated with an increased cancer risk (OR: 1.0) (Momozawa 2018). To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation, and classified the variant as benign (1x) / likely benign (1x). Based on the evidence outlined above, the variant was classified as benign. -
Malignant tumor of breast    Benign:1 
The ATM p.Tyr2036= variant was not identified in the literature nor was it identified in the GeneInsight-COGR, MutDB, LOVD 3.0, databases. The variant was identified in dbSNP (ID: rs3092826) as “With Likely benign allele ", ClinVar (classified as benign by Invitae; as likely benign by Ambry Genetics, Color Genomics, Integrated Genetics/Laboratory Corporation of America), and in Cosmic (1x in Large intestine) databases. The variant was identified in control databases in 73 of 277148 chromosomes at a frequency of 0.00026 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: African in 1 of 24032 chromosomes (freq: 0.00004), Other in 1 of 6464 chromosomes (freq: 0.0002), Latino in 1 of 34416 chromosomes (freq: 0.00003), East Asian in 69 of 18844 chromosomes (freq: 0.004), and South Asian in 1 of 30780 chromosomes (freq: 0.00003), while the variant was not observed in the European, Ashkenazi Jewish, and Finnish populations. The p.Tyr2036= variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site. In addition, in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) 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 although we would lean towards a more benign role for this variant. This variant is classified as likely benign. -
Familial cancer of breast    Benign:1 
This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -
Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at