11-94471601-G-C

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_005591.4(MRE11):c.818C>G(p.Ser273Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000115 in 1,612,526 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 (★★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

MRE11
NM_005591.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:12

Conservation

PhyloP100: 9.77

Variant links:

Genes affected

MRE11 (HGNC:7230): (MRE11 homolog, double strand break repair nuclease) This gene encodes a nuclear protein involved in homologous recombination, telomere length maintenance, and DNA double-strand break repair. By itself, the protein has 3' to 5' exonuclease activity and endonuclease activity. The protein forms a complex with the RAD50 homolog; this complex is required for nonhomologous joining of DNA ends and possesses increased single-stranded DNA endonuclease and 3' to 5' exonuclease activities. In conjunction with a DNA ligase, this protein promotes the joining of noncomplementary ends in vitro using short homologies near the ends of the DNA fragments. This gene has a pseudogene on chromosome 3. Alternative splicing of this gene results in two transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

MRE11 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.875

BS2

High AC in GnomAd4 at 12 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MRE11	NM_005591.4 link	c.818C>G	p.Ser273Cys	missense_variant	Exon 8 of 20	ENST00000323929.8	NP_005582.1	P49959-1A0A024R395

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MRE11	ENST00000323929.8 link	c.818C>G	p.Ser273Cys	missense_variant	Exon 8 of 20	1	NM_005591.4	ENSP00000325863.4	P49959-1
MRE11	ENST00000323977.7 link	c.818C>G	p.Ser273Cys	missense_variant	Exon 8 of 19	1		ENSP00000326094.3	P49959-2
MRE11	ENST00000407439.7 link	c.827C>G	p.Ser276Cys	missense_variant	Exon 8 of 20	2		ENSP00000385614.3	P49959-3
MRE11	ENST00000393241.8 link	c.818C>G	p.Ser273Cys	missense_variant	Exon 8 of 20	5		ENSP00000376933.4	F8W7U8

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152022

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000996

AC:

AN:

250904

Hom.:

AF XY:

0.000125

AC XY:

AN XY:

135616

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000174

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000150

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000119

AC:

174

AN:

1460504

Hom.:

Cov.:

AF XY:

0.000128

AC XY:

AN XY:

726560

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000144

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152022

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74262

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000656

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000124

Hom.:

Bravo

AF:

0.0000831

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000582

AC:

ExAC

AF:

0.0000906

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:12

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:5

Feb 21, 2014

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

MRE11A has been only recently described in association with cancer predisposition and the risks are not well understood. This variant is denoted MRE11A c.818C>G at the cDNA level, p.Ser273Cys (S273C) at the protein level, and results in the change of a Serine to a Cysteine (TCT>TGT). This variant has not, to our knowledge, been published in the literature as pathogenic or benign. MRE11A Ser273Cys was not observed at a significant allele frequency in the NHLBI Exome Sequencing Project. This is a non-conservative amino acid substitution which is likely to impact secondary protein structure since Serine and Cysteine differ in size and/or other properties. MRE11A Ser273Cys occurs at a position that is highly conserved across species and is not located in a known functional domain. In silico analyses predict this variant is probably damaging to protein structure and function. On a molecular level, the impact of this missense variant on protein structure and function is not known and thus we consider this to be a variant of uncertain significance. Furthermore, based on the currently available information, cancer risks associated with this variant, and the MRE11A gene, remain unclear. -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Nov 17, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The MRE11 c.818C>G (p.Ser273Cys) variant has been reported in the published literature in breast cancer cases as well as in reportedly healthy individuals (see LOVD (http://databases.lovd.nl/shared/) and PMID: 33471991 (2021)). The frequency of this variant in the general population, 0.00017 (6/35362 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -

Dec 15, 2021

Athena Diagnostics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Ataxia-telangiectasia-like disorder 1

Uncertain:3

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Aug 13, 2023

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

Oct 14, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: MRE11A c.818C>G (p.Ser273Cys) results in a non-conservative amino acid change located in the DNA double-strand break repair protein Mre11, N-terminal metallophosphatase domain (IPR041796) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 282264 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.818C>G has been reported in the literature in individuals affected with breast cancer or colorectal cancer without evidence for causality (e.g. VanMarcke_2020, Erdem_2020). These reports do not provide unequivocal conclusions about association of the variant with Ataxia Telangiectasia-Like Disorder. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 32283892, 32295625).ClinVar contains an entry for this variant (Variation ID: 127987). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Hereditary cancer-predisposing syndrome

Uncertain:1

May 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.S273C variant (also known as c.818C>G), located in coding exon 7 of the MRE11A gene, results from a C to G substitution at nucleotide position 818. The serine at codon 273 is replaced by cysteine, an amino acid with 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. -

Ovarian neoplasm

Uncertain:1

Dec 22, 2014

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Ataxia-telangiectasia-like disorder

Uncertain:1

Dec 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 273 of the MRE11 protein (p.Ser273Cys). This variant is present in population databases (rs143400546, gnomAD 0.01%). 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: 127987). 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.57

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Pathogenic

0.19

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.66

D;.;.;.

Eigen

Pathogenic

0.97

Eigen_PC

Pathogenic

0.91

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;D;D

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.87

D;D;D;D

MetaSVM

Pathogenic

0.81

MutationAssessor

Pathogenic

3.2

M;.;M;.

PrimateAI

Uncertain

0.68

PROVEAN

Pathogenic

-4.5

D;D;D;D

REVEL

Pathogenic

0.83

Sift

Pathogenic

0.0

D;D;D;D

Sift4G

Uncertain

0.0020

D;D;D;D

Polyphen

0.99

D;.;D;.

Vest4

0.80

MVP

0.83

MPC

0.41

ClinPred

0.81

GERP RS

5.5

Varity_R

0.66

gMVP

0.80

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over