11-108251917-T-G
Variant summary
Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong
The NM_000051.4(ATM):c.1688T>G(p.Met563Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000868 in 1,613,826 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign 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. M563I) has been classified as Likely benign.
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: Likely_benign. The variant received -4 ACMG points.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_000051.4. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | MANE Select | c.1688T>G | p.Met563Arg | missense | Exon 11 of 63 | NP_000042.3 | ||
| ATM | NM_001351834.2 | c.1688T>G | p.Met563Arg | missense | Exon 12 of 64 | NP_001338763.1 |
Ensembl Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| ATM | ENST00000675843.1 | MANE Select | c.1688T>G | p.Met563Arg | missense | Exon 11 of 63 | ENSP00000501606.1 | ||
| ATM | ENST00000452508.7 | TSL:1 | c.1688T>G | p.Met563Arg | missense | Exon 12 of 64 | ENSP00000388058.2 | ||
| ATM | ENST00000531525.3 | TSL:1 | c.1688T>G | p.Met563Arg | missense | Exon 11 of 30 | ENSP00000434327.3 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152212Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000398 AC: 1AN: 251298 AF XY: 0.00000736 show subpopulations
GnomAD4 exome AF: 0.00000821 AC: 12AN: 1461614Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7AN XY: 727114 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152212Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74360 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:3
This sequence change replaces methionine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 563 of the ATM protein (p.Met563Arg). This variant is present in population databases (rs750815208, gnomAD 0.004%). 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: 219767). 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%. RNA analysis performed to evaluate the impact of this missense change on mRNA splicing indicates it does not significantly alter splicing (internal data). 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 methionine with arginine at codon 563 of the ATM protein. Computational prediction suggests that this variant may not impact 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: 28779002). This variant has been identified in 2/282688 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.M563R variant (also known as c.1688T>G), located in coding exon 10 of the ATM gene, results from a T to G substitution at nucleotide position 1688. The methionine at codon 563 is replaced by arginine, an amino acid with similar properties. This alteration has been reported in at least one subject in a study of 13087 breast cancer cases and 5488 control individuals in the UK (Decker B et al. J Med Genet, 2017 11;54:732-741). This amino acid position is poorly 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.
not specified Uncertain:1
Ataxia-telangiectasia syndrome;C0346153:Familial cancer of breast Uncertain:1
not provided Uncertain:1
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at