chr11-94478810-T-C
Variant summary
Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6
The NM_005591.4(MRE11):c.469A>G(p.Met157Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000152 in 1,613,860 control chromosomes in the GnomAD database, including 1 homozygotes. 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M157T) has been classified as Uncertain significance.
Frequency
Consequence
NM_005591.4 missense
Scores
Clinical Significance
Conservation
Publications
- ataxia-telangiectasia-like disorder 1Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet, Ambry Genetics
- breast cancerInheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics
- familial ovarian cancerInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
- hereditary breast carcinomaInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
- prostate cancerInheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Likely_benign. The variant received -5 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| MRE11 | NM_005591.4 | c.469A>G | p.Met157Val | missense_variant | Exon 6 of 20 | ENST00000323929.8 | NP_005582.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| MRE11 | ENST00000323929.8 | c.469A>G | p.Met157Val | missense_variant | Exon 6 of 20 | 1 | NM_005591.4 | ENSP00000325863.4 |
Frequencies
GnomAD3 genomes AF: 0.000105 AC: 16AN: 152218Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.000183 AC: 46AN: 251018 AF XY: 0.000118 show subpopulations
GnomAD4 exome AF: 0.000157 AC: 229AN: 1461524Hom.: 1 Cov.: 30 AF XY: 0.000158 AC XY: 115AN XY: 727080 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000105 AC: 16AN: 152336Hom.: 0 Cov.: 32 AF XY: 0.0000671 AC XY: 5AN XY: 74488 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Ataxia-telangiectasia-like disorder 1 Uncertain:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Ataxia-telangiectasia-like disorder Uncertain:1
This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 157 of the MRE11 protein (p.Met157Val). This variant is present in population databases (rs147771140, gnomAD 0.2%). This variant has not been reported in the literature in individuals affected with MRE11-related conditions. ClinVar contains an entry for this variant (Variation ID: 142476). An algorithm developed to predict the effect of missense changes on protein structure and function outputs the following: PolyPhen-2: "Benign". The valine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect 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 breast ovarian cancer syndrome Uncertain:1
not specified Benign:1
not provided Benign:1
Hereditary cancer-predisposing syndrome Benign:1
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at