chr13-32338466-C-T
Position:
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000059.4(BRCA2):c.4111C>T(p.Gln1371Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★★). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 33)
Consequence
BRCA2
NM_000059.4 stop_gained
NM_000059.4 stop_gained
Scores
2
3
2
Clinical Significance
Conservation
PhyloP100: 1.96
Genes affected
BRCA2 (HGNC:1101): (BRCA2 DNA repair associated) Inherited mutations in BRCA1 and this gene, BRCA2, confer increased lifetime risk of developing breast or ovarian cancer. Both BRCA1 and BRCA2 are involved in maintenance of genome stability, specifically the homologous recombination pathway for double-strand DNA repair. The largest exon in both genes is exon 11, which harbors the most important and frequent mutations in breast cancer patients. The BRCA2 gene was found on chromosome 13q12.3 in human. The BRCA2 protein contains several copies of a 70 aa motif called the BRC motif, and these motifs mediate binding to the RAD51 recombinase which functions in DNA repair. BRCA2 is considered a tumor suppressor gene, as tumors with BRCA2 mutations generally exhibit loss of heterozygosity (LOH) of the wild-type allele. [provided by RefSeq, May 2020]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 13-32338466-C-T is Pathogenic according to our data. Variant chr13-32338466-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 51599.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr13-32338466-C-T is described in Lovd as [Pathogenic]. Variant chr13-32338466-C-T is described in Lovd as [Pathogenic].
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| BRCA2 | NM_000059.4 | c.4111C>T | p.Gln1371Ter | stop_gained | 11/27 | ENST00000380152.8 | NP_000050.3 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| BRCA2 | ENST00000380152.8 | c.4111C>T | p.Gln1371Ter | stop_gained | 11/27 | 5 | NM_000059.4 | ENSP00000369497 | A2 |
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
33
GnomAD4 exome Cov.: 35
GnomAD4 exome
Cov.:
35
GnomAD4 genome
GnomAD4 genome
Cov.:
33
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:16
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 2 Pathogenic:5
| Pathogenic, no assertion criteria provided | clinical testing | Breast Cancer Information Core (BIC) (BRCA2) | Feb 06, 1998 | - - |
| Pathogenic, no assertion criteria provided | clinical testing | Sharing Clinical Reports Project (SCRP) | Jan 24, 2012 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA), c/o University of Cambridge | Oct 02, 2015 | - - |
| Pathogenic, reviewed by expert panel | curation | Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) | Sep 08, 2016 | Variant allele predicted to encode a truncated non-functional protein. - |
| Pathogenic, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Jan 04, 2024 | This variant changes 1 nucleotide in exon 11 of the BRCA2 gene, creating a premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with breast cancer (PMID: 25371446) and ovarian cancer (PMID: 22711857). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Loss of BRCA2 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. - |
Hereditary breast ovarian cancer syndrome Pathogenic:3
| Pathogenic, no assertion criteria provided | research | Research Molecular Genetics Laboratory, Women's College Hospital, University of Toronto | Jan 31, 2014 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 18, 2024 | This sequence change creates a premature translational stop signal (p.Gln1371*) in the BRCA2 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in BRCA2 are known to be pathogenic (PMID: 20104584). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with breast cancer (PMID: 25371446). ClinVar contains an entry for this variant (Variation ID: 51599). For these reasons, this variant has been classified as Pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Sep 20, 2021 | Variant summary: BRCA2 c.4111C>T (p.Gln1371X) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant was absent in 248174 control chromosomes. c.4111C>T has been widely reported in the literature in individuals affected with Hereditary Breast And Ovarian Cancer Syndrome (example, Rebbeck_2018). These data indicate that the variant is likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Multiple clinical diagnostic laboratories, an expert panel (ENIGMA) and a consortium (CIMBA) have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All submitters classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. - |
not provided Pathogenic:2
| Pathogenic, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Mar 12, 2021 | This nonsense variant causes the premature termination of BRCA2 protein synthesis. In addition, it has been identified in individuals affected with breast cancer in the published literature (PMID: 29446198 (2018), 26564481 (2015), 25371446 (2014), 17319787 (2007)). Based on the available information, this variant is classified as pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Jan 26, 2024 | Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Observed in individuals with BRCA2-related cancers (PMID: 11056688, 22711857, 26564481, 25371446); Not observed at significant frequency in large population cohorts (gnomAD); Truncating variants in this gene are considered pathogenic by a well-established clinical consortium and/or database; Also known as 4339C>T; This variant is associated with the following publications: (PMID: 26564481, 28127413, 22711857, 10923033, 25371446, 11056688, 26295337, 17319787, 29446198, 30787465, 36367610, 35438911) - |
Hereditary cancer-predisposing syndrome Pathogenic:2
| Pathogenic, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Dec 14, 2021 | This variant changes 1 nucleotide in exon 11 of the BRCA2 gene, creating a premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with breast cancer (PMID: 25371446) and ovarian cancer (PMID: 22711857). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Loss of BRCA2 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Apr 14, 2022 | The p.Q1371* pathogenic mutation (also known as c.4111C>T), located in coding exon 10 of the BRCA2 gene, results from a C to T substitution at nucleotide position 4111. This changes the amino acid from a glutamine to a stop codon within coding exon 10. This alteration was detected in three individuals from a cohort of 810 unselected, Hispanic women with a personal history of breast cancer (Torres-Mejía G et al. Cancer Epidemiol. Biomarkers Prev. 2015 Mar;24:498-505). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. - |
not specified Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | May 02, 2019 | The BRCA2 c.4111C>T; p.Gln1371Ter variant (rs80358659) has been described in multiple individuals and families affected with hereditary breast and ovarian cancer (HBOC; Rebbeck 2018, Torres-Mejia 2015). It is reported as pathogenic by multiple sources in ClinVar (Variation ID: 51599) and is absent from general population databases (Exome Variant Server and Genome Aggregation Database), indicating it is not a common polymorphism. This variant induces an early termination codon and is predicted to result in a truncated protein or mRNA subject to nonsense-mediated decay. Additionally, several downstream truncating variants have been described in association with HBOC (Rebbeck 2018). Based on available information, the p.Gln1371Ter variant is considered pathogenic. REFERENCES Rebbeck T et al. Mutational spectrum in a worldwide study of 29,700 families with BRCA1 or BRCA2 mutations. Hum Mutat. 2018 May;39(5):593-620. Torres-Mejia G et al. Recurrent BRCA1 and BRCA2 mutations in Mexican women with breast cancer. Cancer Epidemiol Biomarkers Prev. 2015 Mar;24(3):498-505. - |
Breast-ovarian cancer, familial, susceptibility to, 1 Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | Department of Molecular Diagnostics, Institute of Oncology Ljubljana | Apr 02, 2020 | - - |
Malignant tumor of urinary bladder Pathogenic:1
| Pathogenic, no assertion criteria provided | research | Laboratory of Urology, Hospital Clinic de Barcelona | - | - - |
Familial cancer of breast Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Nov 28, 2023 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Benign
D
MutationTaster
Benign
A;A
Vest4
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at