rs80359046
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000059.4(BRCA2):c.8067T>A(p.Cys2689*) 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: 32)
Consequence
BRCA2
NM_000059.4 stop_gained
NM_000059.4 stop_gained
Scores
2
4
1
Clinical Significance
Conservation
PhyloP100: 0.327
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 13-32363269-T-A is Pathogenic according to our data. Variant chr13-32363269-T-A is described in ClinVar as [Pathogenic]. Clinvar id is 52493.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr13-32363269-T-A is described in Lovd as [Pathogenic]. Variant chr13-32363269-T-A is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| BRCA2 | ENST00000380152.8 | c.8067T>A | p.Cys2689* | stop_gained | 18/27 | 5 | NM_000059.4 | ENSP00000369497.3 | ||
| BRCA2 | ENST00000530893.7 | c.7698T>A | p.Cys2566* | stop_gained | 18/27 | 1 | ENSP00000499438.2 | |||
| BRCA2 | ENST00000614259.2 | n.*125T>A | non_coding_transcript_exon_variant | 17/26 | 2 | ENSP00000506251.1 | ||||
| BRCA2 | ENST00000614259 | n.*125T>A | 3_prime_UTR_variant | 17/25 | 2 | ENSP00000506251.1 |
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome
GnomAD4 genome
Cov.:
32
EpiCase
AF:
EpiControl
AF:
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:17
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 2 Pathogenic:8
| Pathogenic, no assertion criteria provided | clinical testing | Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen | - | - - |
| Pathogenic, no assertion criteria provided | clinical testing | BRCAlab, Lund University | Mar 02, 2020 | - - |
| 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, criteria provided, single submitter | clinical testing | Genome Diagnostics Laboratory, University Medical Center Utrecht | Oct 08, 2014 | - - |
| Pathogenic, no assertion criteria provided | clinical testing | Breast Cancer Information Core (BIC) (BRCA2) | Feb 20, 2004 | - - |
| 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. - |
| Likely pathogenic, criteria provided, single submitter | literature only | Counsyl | Sep 09, 2014 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | Sep 21, 2015 | - - |
Hereditary breast ovarian cancer syndrome Pathogenic:4
| Pathogenic, criteria provided, single submitter | clinical testing | Mendelics | Jul 02, 2018 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Jul 15, 2022 | Variant summary: BRCA2 c.8067T>A (p.Cys2689X) 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 251244 control chromosomes. c.8067T>A has been reported in the literature in multiple individuals affected with Hereditary Breast And Ovarian Cancer Syndrome (example, Rebbeck_2018). These data indicate that the variant is very likely to be associated with disease. Multiple clinical diagnostic laboratories and an expert panel (ENIGMA) have submitted clinical-significance assessments for this variant to ClinVar after 2014. All submitters classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Apr 24, 2022 | For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 52493). This premature translational stop signal has been observed in individual(s) with a personal and/or family history of breast or ovarian cancer (PMID: 9167459, 10638982, 22009639, 29446198). This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Cys2689*) 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). - |
| Pathogenic, criteria provided, single submitter | clinical testing | National Health Laboratory Service, Universitas Academic Hospital and University of the Free State | Nov 16, 2021 | - - |
not provided Pathogenic:3
| Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Jul 19, 2016 | This variant is denoted BRCA2 c.8067T>A at the cDNA level and p.Cys2689Ter (C2689X) at the protein level. The substitution creates a nonsense variant, which changes a Cysteine to a premature stop codon (TGT>TGA), and is predicted to cause loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay. Using alternate nomenclature, this variant would be defined as BRCA2 8295T>A and has been reported in multiple individuals with personal and family histories consistent with hereditary breast cancer (Breast Cancer Linkage Consortium 1997, Litton 2000, Peelen 2000, van der Hout 2006, Bayraktar 2012). We consider this variant to be pathogenic. - |
| Pathogenic, no assertion criteria provided | clinical testing | Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute | - | - - |
| Pathogenic, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
Hereditary cancer-predisposing syndrome Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Jul 31, 2023 | The p.C2689* pathogenic mutation (also known as c.8067T>A), located in coding exon 17 of the BRCA2 gene, results from a T to A substitution at nucleotide position 8067. This changes the amino acid from a cysteine to a stop codon within coding exon 17. This variant has been reported in studies of patients with suspected hereditary breast and/or ovarian cancer and in a patient with Fanconi anemia (Stratton M et al. Lancet 1997 May; 349(9064):1505-10; Peelen T et al. Br. J. Cancer 2000 Jan; 82(1):151-6.;Litton JK et al. Cancer 2012 Jan; 118(2):321-5; Bayraktar S et al. Cancer 2012 Mar; 118(6):1515-22; Ameziane N et al. Anemia 2012; 2012:132856; Vos JR et al. Cancer Epidemiol. Biomarkers Prev. 2014 Nov; 23(11):2482-91). 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. - |
Familial cancer of breast Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Dec 07, 2021 | - - |
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
Uncertain
D
Vest4
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
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