11-108247111-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_000051.4(ATM):c.1049C>T(p.Ala350Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,613,444 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.1049C>T | p.Ala350Val | missense_variant | Exon 8 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000132 AC: 2AN: 151980Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251126Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135730
GnomAD4 exome AF: 0.00000684 AC: 10AN: 1461464Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5AN XY: 727020
GnomAD4 genome AF: 0.0000132 AC: 2AN: 151980Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74216
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:3
This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 350 of the ATM protein (p.Ala350Val). This variant is present in population databases (rs375049090, gnomAD 0.006%). This missense change has been observed in individual(s) with breast cancer (PMID: 27553368, 35264596, 35534704). ClinVar contains an entry for this variant (Variation ID: 236665). 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. 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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Hereditary cancer-predisposing syndrome Uncertain:2
This missense variant replaces alanine with valine at codon 350 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). To our knowledge, functional studies have not been reported for this variant. This variant has been reported with a PALB2 truncation (c.1633G>T, p.Glu545*) in an individual affected with breast cancer (PMID: 27553368). This variant has been identified in 2/251126 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.A350V variant (also known as c.1049C>T), located in coding exon 7 of the ATM gene, results from a C to T substitution at nucleotide position 1049. The alanine at codon 350 is replaced by valine, an amino acid with similar properties. This alteration has been identified in individuals diagnosed with breast cancer (Pinto P et al. Breast Cancer Res Treat, 2016 Sep;159:245-56; Weitzel JN et al. Cancer, 2019 Aug;125:2829-2836; Guindalini RSC et al. Sci Rep, 2022 Mar;12:4190). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the available evidence, the clinical significance of this alteration remains unclear. -
Ataxia-telangiectasia syndrome;C0346153:Familial cancer of breast Uncertain:1
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not provided Uncertain:1
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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