13-32346841-C-T
Position:
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong
The NM_000059.4(BRCA2):c.6952C>T(p.Arg2318Ter) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000103 in 1,455,550 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 Pathogenic (★★★). Synonymous variant affecting the same amino acid position (i.e. R2318R) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.000010 ( 0 hom. )
Consequence
BRCA2
NM_000059.4 stop_gained
NM_000059.4 stop_gained
Scores
2
3
2
Clinical Significance
Conservation
PhyloP100: 4.40
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 16 ACMG points.
PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PP5
Variant 13-32346841-C-T is Pathogenic according to our data. Variant chr13-32346841-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 38076.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr13-32346841-C-T is described in Lovd as [Pathogenic]. Variant chr13-32346841-C-T is described in Lovd as [Pathogenic].
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
|---|---|---|---|---|---|---|---|
| BRCA2 | NM_000059.4 | c.6952C>T | p.Arg2318Ter | stop_gained | 13/27 | ENST00000380152.8 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| BRCA2 | ENST00000380152.8 | c.6952C>T | p.Arg2318Ter | stop_gained | 13/27 | 5 | NM_000059.4 | A2 |
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
32
GnomAD4 exome AF: 0.0000103 AC: 15AN: 1455550Hom.: 0 Cov.: 29 AF XY: 0.00000690 AC XY: 5AN XY: 724168
GnomAD4 exome
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29
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5
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724168
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GnomAD4 genome
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:35Other:1
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
not provided Pathogenic:11
| Pathogenic, criteria provided, single submitter | clinical testing | Clinical Genetics Laboratory, Skane University Hospital Lund | May 27, 2022 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | May 28, 2017 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden | Nov 03, 2021 | - - |
| Pathogenic, no assertion criteria provided | clinical testing | Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute | - | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Clinical Genetics and Genomics, Karolinska University Hospital | Jul 30, 2019 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Jul 14, 2017 | This pathogenic variant is denoted BRCA2 c.6952C>T at the cDNA level and p.Arg2318Ter (R2318X) at the protein level. The substitution creates a nonsense variant, changing an Arginine to a premature stop codon (CGA>TGA). This variant is predicted to cause loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay. This variant, also known as BRCA2 7180C>T using alternate nomenclature, has been observed in individuals with breast, ovarian, pancreatic, and/or prostate cancer (Sugano 2008, Kim 2012, Hasmad 2015, Hirotsu 2015, Takai 2016, Annala 2017). We consider this variant to be pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | GeneKor MSA | Jan 01, 2020 | This sequence change creates a premature translational stop signal at codon 2318 (p.Arg2318*). It is expected to result in an absent or disrupted protein product. Truncating variants in BRCA2 are known to be pathogenic. This particular truncation has been reported in the literature in individuals affected by breast and/or ovarian cancer (PMID: 19016756, 25802882, 22217648, 25863477, 26187060). The mutation database ClinVar contains an entry for this variant (Variation ID: 38076). - |
| Pathogenic, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Feb 01, 2022 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital | Feb 06, 2024 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Feb 24, 2023 | - - |
Breast-ovarian cancer, familial, susceptibility to, 2 Pathogenic:9
| 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, no assertion criteria provided | clinical testing | Sharing Clinical Reports Project (SCRP) | Oct 09, 2012 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Aug 14, 2023 | This variant changes 1 nucleotide in exon 13 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/ovarian cancer (PMID: 11149425, 11802209, 19016756, 22217648, 25802882, 25863477, 26541979, 27732944, 28541631). 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, reviewed by expert panel | curation | Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) | Apr 22, 2016 | Variant allele predicted to encode a truncated non-functional protein. - |
| Pathogenic, no assertion criteria provided | clinical testing | Breast Cancer Information Core (BIC) (BRCA2) | May 29, 2002 | - - |
| Pathogenic, no assertion criteria provided | clinical testing | Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen | - | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | Sep 21, 2015 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Department of Human Genetics, Hannover Medical School | Jul 15, 2024 | - - |
| Pathogenic, no assertion criteria provided | clinical testing | BRCAlab, Lund University | Mar 02, 2020 | - - |
Hereditary breast ovarian cancer syndrome Pathogenic:6
| 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 | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Apr 21, 2020 | Variant summary: BRCA2 c.6952C>T (p.Arg2318X) 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 249792 control chromosomes (gnomAD). c.6952C>T has been reported in the literature in multiple individuals affected with Hereditary Breast And Ovarian Cancer Syndrome (Wagner_1999, Ikeda_2001, Meindl_2002, Kwong_2015). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. 13 ClinVar submitters (evaluation after 2014), including one expert panel (ENIGMA), cite the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Jun 19, 2020 | The p.Arg2318X variant in BRCA2 has been previously reported in >4 heterozygous individuals with breast and/or ovarian cancer and one individual with Fanconi anemia who was compound heterozygous for a second loss of function BRCA2 variant (Hasmad 2016 PMID 26541979, Hirotsu 2015 PMID 25802882, Mori 2019 PMID 30792206, Sugano 2008 PMID 19016756, Takai 2016 PMID 27732944). It is absent from large population studies. This variant was classified as pathogenic on 4/22/2016 by the ClinGen-approved ENIGMA expert panel (Variation ID 38076). This nonsense variant leads to a premature termination codon at position 2318, which is predicted to lead to a truncated or absent protein. Loss of function of the BRCA2 gene is an established disease mechanism in autosomal dominant hereditary breast and ovarian cancer (HBOC). In summary, this variant meets criteria to be classified as pathogenic for autosomal dominant HBOC. ACMG/AMP Criteria applied: PVS1, PM2, PM3, PS4_Supporting. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Nov 10, 2023 | This sequence change creates a premature translational stop signal (p.Arg2318*) 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 and/or ovarian cancer (PMID: 19016756, 22217648, 25802882, 25863477, 26187060). This variant is also known as 7180C>T. ClinVar contains an entry for this variant (Variation ID: 38076). For these reasons, this variant has been classified as Pathogenic. - |
| Pathogenic, criteria provided, single submitter | research | Research Institute, Aichi Cancer Center | Feb 01, 2022 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Mendelics | Jul 02, 2018 | - - |
Hereditary cancer-predisposing syndrome Pathogenic:3
| Pathogenic, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Sep 25, 2023 | This variant changes 1 nucleotide in exon 13 of the BRCA2 gene, creating a premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. This variant has been reported in individuals affected with breast/ovarian cancer (PMID: 11149425, 11802209, 19016756, 22217648, 25802882, 25863477, 26541979, 27732944, 28541631). 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 | May 13, 2022 | The p.R2318* pathogenic mutation (also known as c.6952C>T), located in coding exon 12 of the BRCA2 gene, results from a C to T substitution at nucleotide position 6952. This changes the amino acid from an arginine to a stop codon within coding exon 12. This mutation was identified as disease causing in a cohort of Korean breast cancer patients and Japanese breast and/or ovarian cancer patients (Jang JH et al. J et al. Hum. Genet. 2012 Mar; 57(3):212-5; Hirotsu Y et al. Mol Genet Genomic Med. 2015 Mar; 3(2):121-9). This mutation was also identified in two cohorts of ovarian cancer patients, one from Malaysia (Hasmad HN et al. Gynecol. Oncol. 2016 May;141:318-22) and the other from China (Zhao Q et al. J Gynecol Oncol. 2017 Jul;28:e39), as well as in a Japanese cohort of pancreatic cancer patients (Takai E et al. Oncotarget. 2016 Nov;7:74227-74235). Of note, this alteration is also designated as 7180C>T in published literature. 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. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Institute for Biomarker Research, Medical Diagnostic Laboratories, L.L.C. | Jan 16, 2018 | - - |
Familial cancer of breast Pathogenic:2
| Pathogenic, criteria provided, single submitter | clinical testing | Institute of Human Genetics, University of Leipzig Medical Center | Jan 01, 2019 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | May 24, 2023 | - - |
Medulloblastoma;C0346153:Familial cancer of breast;C0376358:Malignant tumor of prostate;C1838457:Fanconi anemia complementation group D1;C2675520:Breast-ovarian cancer, familial, susceptibility to, 2;C2751641:Glioma susceptibility 3;C3150546:Pancreatic cancer, susceptibility to, 2;CN033288:Wilms tumor 1 Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Oct 31, 2018 | - - |
Breast neoplasm Pathogenic:1
| Pathogenic, criteria provided, single submitter | research | Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University | Nov 01, 2015 | - - |
Gastric cancer Pathogenic:1
| Pathogenic, no assertion criteria provided | research | Laboratory for Genotyping Development, RIKEN | Jul 01, 2021 | - - |
Ovarian neoplasm Pathogenic:1
| Pathogenic, no assertion criteria provided | research | German Consortium for Hereditary Breast and Ovarian Cancer, University Hospital Cologne | Dec 01, 2018 | - - |
BRCA2-related disorder Other:1
| not provided, no classification provided | phenotyping only | GenomeConnect - Invitae Patient Insights Network | - | Variant interpreted as Pathogenic and reported on 09-10-2018 by Lab Invitae. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. - |
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