11-108332838-C-G
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM1BP4_Moderate
The NM_000051.4(ATM):c.7865C>G(p.Ala2622Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,866 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Uncertain significance (★★).
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ATM | NM_000051.4 | c.7865C>G | p.Ala2622Gly | missense_variant | Exon 53 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.00000797 AC: 2AN: 250856Hom.: 0 AF XY: 0.00000738 AC XY: 1AN XY: 135584
GnomAD4 exome AF: 0.00000411 AC: 6AN: 1460866Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4AN XY: 726792
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not provided Uncertain:3
The ATM c.7865C>G (p.Ala2622Gly) variant in the ATM gene. In the published literature, this variant has been reported in individuals with breast cancer (PMIDs: 29522266 (2018), 33471991 (2021), see also LOVD (http://databases.lovd.nl/shared)). This variant has also been observed in reportedly healthy individuals (PMID: 33471991 (2021), see also LOVD (http://databases.lovd.nl/shared)). The frequency of this variant in the general population, 0.000008 (2/250856 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. ClinVar contains an entry for this variant (URL: www.ncbi.nlm.nih.gov/clinvar, Variation ID: 187688). Analysis of this variant using bioinformatics tools (i.e., MutationTaster and PolyPhen-2) for the prediction of the effect of amino acid changes on protein structure and function yielded conflicting predictions that this variant is deleterious or benign. Please note that these prediction tools are not fully validated, and therefore, should be viewed with caution. Based on the available information, we are unable to determine the clinical significance of this variant. -
ATM: PM5, BP4 -
This variant is denoted ATM c.7865C>G at the cDNA level, p.Ala2622Gly (A2622G) at the protein level, and results in the change of an Alanine to a Glycine (GCA>GGA). This variant has not, to our knowledge, been published in the literature as pathogenic or benign. ATM Ala2622Gly was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. Since Alanine and Glycine share similar properties, this is considered a conservative amino acid substitution. ATM Ala2622Gly occurs at a position that is conserved among mammals and is not located in a known functional domain. In silico analyses are inconsistent regarding the effect this variant may have on protein structure and function. Based on currently available information, it is unclear whether ATM Ala2622Gly is pathogenic or benign. We consider it to be a variant of uncertain significance. -
Ataxia-telangiectasia syndrome Uncertain:2
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This sequence change replaces alanine, which is neutral and non-polar, with glycine, which is neutral and non-polar, at codon 2622 of the ATM protein (p.Ala2622Gly). This variant is present in population databases (rs766351395, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with ATM-related conditions. ClinVar contains an entry for this variant (Variation ID: 187688). 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. -
Hereditary cancer-predisposing syndrome Uncertain:2
This missense variant replaces alanine with glycine at codon 2622 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). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has been identified in 2/250856 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.A2622G variant (also known as c.7865C>G), located in coding exon 52 of the ATM gene, results from a C to G substitution at nucleotide position 7865. The alanine at codon 2622 is replaced by glycine, an amino acid with similar properties. This alteration was detected in 1/5589 German BRCA1/2-negative probands with breast cancer (Hauke J et al. Cancer Med, 2018 04;7:1349-1358). 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. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Familial cancer of breast Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at