ClinVar Miner

Submissions for variant NM_000051.4(ATM):c.7364T>A (p.Leu2455Gln)

dbSNP: rs1555123056
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV000562756 SCV000668017 uncertain significance Hereditary cancer-predisposing syndrome 2016-11-16 criteria provided, single submitter clinical testing The p.L2455Q variant (also known as c.7364T>A), located in coding exon 49 of the ATM gene, results from a T to A substitution at nucleotide position 7364. The leucine at codon 2455 is replaced by glutamine, an amino acid with dissimilar properties. This variant was not reported in population based cohorts in the following databases: Database of Single Nucleotide Polymorphisms (dbSNP), NHLBI Exome Sequencing Project (ESP), and 1000 Genomes Project. In the ESP, this variant was not observed in 6499 samples (12998 alleles) with coverage at this position. To date, this alteration has been detected with an allele frequency of approximately 0.001% (greater than 180000 alleles tested) in our clinical cohort. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Labcorp Genetics (formerly Invitae), Labcorp RCV003605647 SCV004463865 uncertain significance Ataxia-telangiectasia syndrome 2023-04-30 criteria provided, single submitter clinical testing 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. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 482658). This variant has not been reported in the literature in individuals affected with ATM-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces leucine, which is neutral and non-polar, with glutamine, which is neutral and polar, at codon 2455 of the ATM protein (p.Leu2455Gln).

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