11-108332885-T-G
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_000051.4(ATM):c.7912T>G(p.Trp2638Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000248 in 1,612,928 control chromosomes in the GnomAD database, with no homozygous occurrence. 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.7912T>G | p.Trp2638Gly | missense_variant | Exon 53 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152220Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000200 AC: 5AN: 250502Hom.: 0 AF XY: 0.00000738 AC XY: 1AN XY: 135480
GnomAD4 exome AF: 6.85e-7 AC: 1AN: 1460592Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 726684
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152336Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74502
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:3
This missense variant replaces tryptophan with glycine at codon 2638 of the ATM protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with Lynch syndrome-associated cancer and/or polyps (PMID: 25980754). This variant has been identified in 5/250502 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. -
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The p.W2638G variant (also known as c.7912T>G), located in coding exon 52 of the ATM gene, results from a T to G substitution at nucleotide position 7912. The tryptophan at codon 2638 is replaced by glycine, an amino acid with highly dissimilar properties. This amino acid position is well 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. -
Ataxia-telangiectasia syndrome Uncertain:2
This sequence change replaces tryptophan, which is neutral and slightly polar, with glycine, which is neutral and non-polar, at codon 2638 of the ATM protein (p.Trp2638Gly). This variant is present in population databases (rs563137460, gnomAD 0.02%). This missense change has been observed in individual(s) with Lynch syndrome (PMID: 25980754). ClinVar contains an entry for this variant (Variation ID: 231709). 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 tolerated. 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. -
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Ataxia-telangiectasia syndrome;C0346153:Familial cancer of breast Uncertain:1
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not provided Uncertain:1
This variant is denoted ATM c.7912T>G at the cDNA level, p.Trp2638Gly (W2638G) at the protein level, and results in the change of a Tryptophan to a Glycine (TGG>GGG). This variant has been identified in at least one individual undergoing genetic testing for Lynch syndrome using a multi-gene panel (Yurgelun 2015). ATM Trp2638Gly 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 Tryptophan and Glycine differ in some properties, this is considered a semi-conservative amino acid substitution. ATM Trp2638Gly occurs at a position that is conserved across species 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 Trp2638Gly is pathogenic or benign. We consider it to be a variant of uncertain significance. -
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