rs186333183

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_005591.4(MRE11):​c.1504C>T​(p.Arg502Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000184 in 1,611,336 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00019 ( 0 hom. )

Consequence

MRE11
NM_005591.4 missense

Scores

10
9

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:11B:1

Conservation

PhyloP100: 2.55
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2
High AC in GnomAd4 at 23 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MRE11NM_005591.4 linkc.1504C>T p.Arg502Cys missense_variant Exon 14 of 20 ENST00000323929.8 NP_005582.1 P49959-1A0A024R395

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MRE11ENST00000323929.8 linkc.1504C>T p.Arg502Cys missense_variant Exon 14 of 20 1 NM_005591.4 ENSP00000325863.4 P49959-1
MRE11ENST00000323977.7 linkc.1504C>T p.Arg502Cys missense_variant Exon 14 of 19 1 ENSP00000326094.3 P49959-2
MRE11ENST00000407439.7 linkc.1513C>T p.Arg505Cys missense_variant Exon 14 of 20 2 ENSP00000385614.3 P49959-3
MRE11ENST00000393241.8 linkc.1504C>T p.Arg502Cys missense_variant Exon 14 of 20 5 ENSP00000376933.4 F8W7U8

Frequencies

GnomAD3 genomes
AF:
0.000151
AC:
23
AN:
151988
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000169
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.000235
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000116
AC:
29
AN:
250326
Hom.:
0
AF XY:
0.0000739
AC XY:
10
AN XY:
135338
show subpopulations
Gnomad AFR exome
AF:
0.000185
Gnomad AMR exome
AF:
0.0000290
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:
0.000221
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000188
AC:
274
AN:
1459230
Hom.:
0
Cov.:
29
AF XY:
0.000167
AC XY:
121
AN XY:
726148
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000505
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000236
Gnomad4 OTH exome
AF:
0.0000995
GnomAD4 genome
AF:
0.000151
AC:
23
AN:
152106
Hom.:
0
Cov.:
32
AF XY:
0.000175
AC XY:
13
AN XY:
74338
show subpopulations
Gnomad4 AFR
AF:
0.000169
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000235
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000260
Hom.:
0
Bravo
AF:
0.000121
TwinsUK
AF:
0.000539
AC:
2
ALSPAC
AF:
0.000259
AC:
1
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.000157
AC:
19
EpiCase
AF:
0.000327
EpiControl
AF:
0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:11Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:4
Nov 03, 2021
Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
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

- -

-
Genome Diagnostics Laboratory, Amsterdam University Medical Center
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

-
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Ataxia-telangiectasia-like disorder 1 Uncertain:3
May 23, 2017
Fulgent Genetics, Fulgent Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Jan 13, 2018
Illumina Laboratory Services, Illumina
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. -

Mar 13, 2024
Baylor Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome Uncertain:2
Sep 27, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.R502C variant (also known as c.1504C>T), located in coding exon 13 of the MRE11A gene, results from a C to T substitution at nucleotide position 1504. The arginine at codon 502 is replaced by cysteine, an amino acid with highly dissimilar properties. In one study, this variant was reported in 0/1313 early-onset breast cancer cases and 1/1123 population controls (Damiola F et al. Breast Cancer Res. 2014 Jun;16:R58). This alteration was also reported in a study of 1297 cases of early-onset breast cancer and 1121 controls; although it was not specified if this variant was observed in a case or control (Young EL et al. J. Med. Genet. 2016 Jun;53:366-76). This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

May 03, 2021
Sema4, Sema4
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: curation

- -

Hereditary breast ovarian cancer syndrome Uncertain:1
Apr 19, 2022
National Health Laboratory Service, Universitas Academic Hospital and University of the Free State
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 arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 502 of the MRE11 protein (p.Arg502Cys). This variant is present in population databases (rs186333183, gnomAD 0.02%). This missense change has been observed in individual(s) with acute lymphocytic leukemia (PMID: 26580448). ClinVar contains an entry for this variant (Variation ID: 142153). 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 tolerated. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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. -

not specified Benign:1
Sep 04, 2021
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Variant summary: MRE11 c.1504C>T (p.Arg502Cys) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00012 in 250326 control chromosomes. The observed variant frequency is approximately 2 fold of the estimated maximal expected allele frequency for a pathogenic variant in MRE11 causing Hereditary Breast And Ovarian Cancer Syndrome phenotype (6.3e-05), strongly suggesting that the variant is benign. c.1504C>T has been reported in the literature as a germline variant in one case of hyperdiploid ALL in a cohort of pediatric cancer patients younger than age 20 undergoing multigene sequence analysis (example, Zhang_2015). These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.12
BayesDel_addAF
Benign
-0.056
T
BayesDel_noAF
Uncertain
-0.030
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Benign
0.33
T;.;.;.
Eigen
Benign
0.083
Eigen_PC
Uncertain
0.24
FATHMM_MKL
Uncertain
0.88
D
LIST_S2
Uncertain
0.92
D;D;D;D
M_CAP
Benign
0.043
D
MetaRNN
Uncertain
0.50
D;D;D;D
MetaSVM
Benign
-0.50
T
MutationAssessor
Uncertain
2.6
M;.;M;.
PrimateAI
Uncertain
0.59
T
PROVEAN
Uncertain
-3.3
D;D;D;D
REVEL
Uncertain
0.35
Sift
Benign
0.073
T;T;T;T
Sift4G
Benign
0.065
T;T;T;T
Polyphen
0.028
B;.;B;.
Vest4
0.70
MVP
0.73
MPC
0.12
ClinPred
0.19
T
GERP RS
5.8
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.17
gMVP
0.19

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.33
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.33
Position offset: -11

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.

Other links and lift over

dbSNP: rs186333183; hg19: chr11-94189501; COSMIC: COSV60580501; API