11-108307950-C-A
Variant summary
Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3
The NM_000051.4(ATM):c.5728C>A(p.Leu1910Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000018 in 1,613,684 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L1910P) has been classified as Uncertain significance.
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
Publications
- hereditary breast carcinomaInheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics, ClinGen
- ataxia telangiectasiaInheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, ClinGen, Laboratory for Molecular Medicine, Orphanet
- hereditary nonpolyposis colon cancerInheritance: AD Classification: MODERATE, LIMITED Submitted by: ClinGen, Ambry Genetics
- prostate cancerInheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- sarcomaInheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
- familial ovarian cancerInheritance: AD Classification: LIMITED Submitted by: ClinGen
- gastric carcinomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Uncertain_significance. The variant received 1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | c.5728C>A | p.Leu1910Ile | missense_variant | Exon 38 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152170Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000796 AC: 2AN: 251114 AF XY: 0.00000737 show subpopulations
GnomAD4 exome AF: 0.0000178 AC: 26AN: 1461514Hom.: 0 Cov.: 30 AF XY: 0.0000179 AC XY: 13AN XY: 727058 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152170Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74332 show subpopulations ⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
Age Distribution
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:3
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This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
This sequence change replaces leucine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 1910 of the ATM protein (p.Leu1910Ile). This variant is present in population databases (rs143577586, gnomAD 0.002%). This missense change has been observed in individual(s) with colorectal cancer and/or male breast cancer (PMID: 28135145, 30613976). ClinVar contains an entry for this variant (Variation ID: 185625). 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) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on ATM protein function. 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 leucine with isoleucine at codon 1910 of the ATM protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with breast cancer (PMID: 33471991) and in an individual affected with colorectal cancer (PMID: 28135145). This variant has been identified in 2/251114 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.L1910I variant (also known as c.5728C>A), located in coding exon 37 of the ATM gene, results from a C to A substitution at nucleotide position 5728. The leucine at codon 1910 is replaced by isoleucine, an amino acid with highly similar properties. This variant has been reported in one individual from an Italian cohort of male breast cancer patients enriched for non-BRCA1/2 cases (Rizzolo P et al. Int J Cancer 2019 07;145(2):390-400). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -
not provided Uncertain:1
Observed in individuals with colorectal or male breast cancer and in an individual with an unspecified type of cancer and a family history of multiple types of cancers (PMID: 28135145, 30613976, 34326862); Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis indicates that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 30613976, 28135145, 34326862) -
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