rs80359636
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Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong
The NM_000059.4(BRCA2):c.7069_7070del(p.Leu2357ValfsTer2) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000285 in 1,613,738 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★★). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000029 ( 0 hom. )
Consequence
BRCA2
NM_000059.4 frameshift
NM_000059.4 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 1.91
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 13-32354920-TTC-T is Pathogenic according to our data. Variant chr13-32354920-TTC-T is described in ClinVar as [Pathogenic]. Clinvar id is 38082.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr13-32354920-TTC-T is described in Lovd as [Pathogenic]. Variant chr13-32354920-TTC-T is described in Lovd as [Pathogenic].
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| BRCA2 | NM_000059.4 | c.7069_7070del | p.Leu2357ValfsTer2 | frameshift_variant | 14/27 | ENST00000380152.8 | NP_000050.3 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| BRCA2 | ENST00000380152.8 | c.7069_7070del | p.Leu2357ValfsTer2 | frameshift_variant | 14/27 | 5 | NM_000059.4 | ENSP00000369497 | A2 |
Frequencies
GnomAD3 genomes 0.0000197 AC: 3AN: 152164Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000239 AC: 6AN: 250930Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135648
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GnomAD4 exome AF: 0.0000294 AC: 43AN: 1461574Hom.: 0 AF XY: 0.0000289 AC XY: 21AN XY: 727076
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GnomAD4 genome 0.0000197 AC: 3AN: 152164Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74328
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ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:41
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 2 Pathogenic:18
| Pathogenic, no assertion criteria provided | clinical testing | Breast Cancer Information Core (BIC) (BRCA2) | May 29, 2002 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet | May 27, 2024 | PVS1; PM5_PTC_Strong - |
| 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, criteria provided, single submitter | clinical testing | Genetics and Molecular Pathology, SA Pathology | Aug 10, 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 | Michigan Medical Genetics Laboratories, University of Michigan | Nov 03, 2014 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Institute of Human Genetics, University of Leipzig Medical Center | Oct 05, 2023 | Criteria applied: PVS1,PS4,PM5_STR - |
| Pathogenic, no assertion criteria provided | clinical testing | BRCAlab, Lund University | Mar 02, 2020 | - - |
| 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;provider interpretation | Geisinger Autism and Developmental Medicine Institute, Geisinger Health System | Jun 11, 2017 | This 6 year old male with global developmental delays (at-risk for mild intellectual disability), ADHD, disruptive behavior, and mild overgrowth was found to carry a maternally inherited 2 bp deletion in the BRCA2 gene. The c.7069_7070delCT pathogenic variant in the BRCA2 gene, previously reported as 7297delCT using alternate nomenclature, has been published in association with early-onset breast cancer, ovarian cancer, and prostate cancer (Garvin et al., 1997; Zhang et al., 2011; Cunningham et al., 2014; Song et al., 2014; Ellingson et al., 2015; Decker et al., 2016). The deletion causes a frameshift and is predicted to cause loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay. Given that this is an adult-onset condition, the patient is not expected to be affected at this time. The patient's mother has not been formally evaluated in the oncology setting, so her current status is unknown. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Human Genome Sequencing Center Clinical Lab, Baylor College of Medicine | Aug 06, 2018 | This c.7069_7070delCT (p.Leu2357Valfs*2) frameshift variant in the BRCA2 gene is predicted to introduce a premature translation termination codon. It has been reported in multiple unrelated patients and families affected with breast cancer [PMID 9429140, 18465347, 21120943, 21324516, 24504028] and is extremely rare in general population. Therefore, this variant in the BRCA2 gene is classified as pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Genologica Medica | Jan 01, 2017 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Counsyl | Feb 04, 2016 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Department of Medical Genetics, Oslo University Hospital | Jul 01, 2015 | - - |
| Pathogenic, no assertion criteria provided | clinical testing | Sharing Clinical Reports Project (SCRP) | Apr 23, 2013 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Mar 01, 2024 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Feb 05, 2024 | This variant deletes 2 nucleotides in exon 14 of the BRCA2 gene, creating a frameshift and premature translation stop signal. This variant is also known as 7297delCT in the literature according to the BIC nomenclature. This variant is expected to result in an absent or non-functional protein product. This variant has been reported in over ten individuals affected with breast and/or ovarian cancer (PMID: 9667259, 16234499, 18824701, 20104584, 21324516, 21913181, 24504028, 24549055, 24728189), as well as colorectal cancer (PMID: 27978560) and high grade prostate cancer (PMID: 34700141). This variant has been identified in 7/282332 chromosomes 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, no assertion criteria provided | clinical testing | Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen | - | - - |
not provided Pathogenic:9
| Pathogenic, criteria provided, single submitter | clinical testing | Mayo Clinic Laboratories, Mayo Clinic | Apr 01, 2022 | PP5, PM2, PVS1 - |
| Pathogenic, no assertion criteria provided | clinical testing | Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute | - | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Jun 19, 2023 | The BRCA2 c.7069_7070del; p.Leu2357ValfsTer2 variant (rs80359636), also known as 7297delCT, has been reported in multiple individuals with early onset breast or ovarian cancer (Caux-Moncoutier 2011, Cunningham 2014, Garvin 1997, Zhang 2011). It is listed as pathogenic in ClinVar (Variation ID: 38082) and is observed 7 times in the Genome Aggregation Database (7/276,822 alleles). This variant causes a frameshift by deleting two nucleotides, so it is predicted to result in a truncated protein or mRNA subject to nonsense-mediated decay. Based on available information, the variant is considered to be pathogenic. References: Caux-Moncoutier V et al. EMMA, a cost- and time-effective diagnostic method for simultaneous detection of point mutations and large-scale genomic rearrangements: application to BRCA1 and BRCA2 in 1,525 patients. Hum Mutat. 2011; 32(3):325-34. PMID: 21120943. Cunningham J et al. Clinical characteristics of ovarian cancer classified by BRCA1, BRCA2, and RAD51C status. Sci Rep. 2014; 4:4026. PMID: 24504028. Garvin A et al. BRCA1 and BRCA2 mutation analysis in 86 early onset breast/ovarian cancer patients. J Med Genet. 1997; 34(12):990-5. PMID: 9429140. Zhang S et al. Frequencies of BRCA1 and BRCA2 mutations among 1,342 unselected patients with invasive ovarian cancer. Gynecol Oncol. 2011; 121(2):353-7. PMID: 21324516. - |
| Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Mar 04, 2020 | Observed in multiple individuals with BRCA2-related cancers (Garvin 1997, Zhang 2011, Cunningham 2014, Song 2014, Ellingson 2015, Decker 2016, Afghahi 2017); Frameshift 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; Truncating variants in this gene are considered pathogenic by a well-established clinical consortium and/or database; Not observed at a significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 26745875, 24728189, 26681312, 26296701, 29084914, 9429140, 21324516, 24830819, 20104584, 21120943, 27087322, 24504028, 28166811, 28087643, 27978560, 29339979, 30720243, 30322717, 31432501, 31447099, 31263571, 31948886, 32853339, 30787465, 33087929) - |
| Pathogenic, criteria provided, single submitter | clinical testing | Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen | Oct 23, 2020 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Jun 01, 2021 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | May 08, 2023 | This frameshift variant alters the translational reading frame of the BRCA2 mRNA and causes the premature termination of BRCA2 protein synthesis. The frequency of this variant in the general population, 0.000054 (7/128928 chromosomes, http://gnomad.broadinstitute.org), is consistent with pathogenicity. In the published literature, the variant has been reported in individuals with breast cancer (PMID: 9429140 (1997)), ovarian cancer (PMID: 29084914 (2018), 30322717 (2018), 31263571 (2019)), colorectal cancer (PMID: 27978560 (2016)), and pancreatic cancer (PMID: 31948886 (2020), 32853339 (2021)). Based on the available information, this variant is classified as pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital | Jul 31, 2024 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Nov 29, 2023 | - - |
Hereditary breast ovarian cancer syndrome Pathogenic:5
| Pathogenic, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Aug 07, 2017 | Variant summary: The BRCA2 c.7069_7070delCT (p.Leu2357Valfs) variant results in a premature termination codon, predicted to cause a truncated or absent BRCA2 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 (e.g., c.7133C>G [p.Ser2378X], c.7180A>T [p.Arg2394X], and c.7360delA [p.Ile2454fs). One in silico tool predicts a damaging outcome for this variant. This variant was found in the large control database ExAC at a frequency of 0.000033 (4/121100 control chromosomes), which does not exceed the estimated maximal expected allele frequency of a pathogenic BRCA2 variant (0.0007503). The variant has been identified in numerous patients in published reports (e.g., Thomassen_Acta Oncol_2008). In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as pathogenic. Taken together, this variant is classified as pathogenic. - |
| Pathogenic, criteria provided, single submitter | clinical testing | Mendelics | Jul 02, 2018 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Apr 24, 2019 | The p.Leu2357ValfsX2 variant in BRCA2 has been identified in >30 individuals with BRCA2-associated cancers (Garvin 1997, Spearman 2008, Borg 2010, Caux-Moncoutier 2011, Zhang 2011, Breast Cancer Information Core (BIC) database). This variant has also been identified in 7/12892 European chromosomes by the Genome Aggregation Database (GnomAD, http://gnomad.broadinstitute.org); however, this frequency is low enough to be consistent with the frequency of hereditary breast and ovarian cancer (HBOC) in the general population. This variant is predicted to cause a frameshift, which alters the protein’s amino acid sequence beginning at position 2357 and leads to a premature termination codon 2 amino acids downstream. This alteration is then predicted to lead to a truncated or absent protein. Heterozygous loss of function of the BRCA2 gene is an established disease mechanism in individuals with HBOC. In addition, this variant was classified as Pathogenic on April 22, 2016 by the ClinGen-approved ENIGMA expert panel (ClinVar SCV000282439.1). In summary, this variant meets criteria to be classified as pathogenic for HBOC in an autosomal dominant manner based upon the predicted impact to the protein. ACMG/AMP Criteria applied: PVS1, PS4, PM2. - |
| 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 11, 2024 | This sequence change creates a premature translational stop signal (p.Leu2357Valfs*2) 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 present in population databases (rs756538291, gnomAD 0.006%). This premature translational stop signal has been observed in individual(s) with breast and ovarian cancer (PMID: 9429140, 21324516, 24504028, 24728189). This variant is also known as 7297delCT. ClinVar contains an entry for this variant (Variation ID: 38082). For these reasons, this variant has been classified as Pathogenic. - |
Familial cancer of breast Pathogenic:2
| Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Feb 09, 2024 | - - |
| Pathogenic, criteria provided, single submitter | clinical testing | Institute of Human Genetics, University of Leipzig Medical Center | Mar 27, 2024 | Criteria applied: PVS1,PM5_STR - |
Hereditary cancer-predisposing syndrome Pathogenic:2
| Pathogenic, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Jan 03, 2024 | This variant deletes 2 nucleotides in exon 14 of the BRCA2 gene, creating a frameshift and premature translation stop signal. This variant is also known as 7297delCT in the literature. This variant is expected to result in an absent or non-functional protein product. This variant has been reported in over ten individuals affected with breast and/or ovarian cancer (PMID: 9667259, 16234499, 18824701, 20104584, 21324516, 21913181, 24504028, 24549055, 24728189), as well as colorectal cancer (PMID: 27978560) and high grade prostate cancer (PMID: 34700141). This variant has been identified in 7/282332 chromosomes 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 | Jan 18, 2022 | The c.7069_7070delCT pathogenic mutation, located in coding exon 13 of the BRCA2 gene, results from a deletion of two nucleotides at nucleotide positions 7069 to 7070, causing a translational frameshift with a predicted alternate stop codon (p.L2357Vfs*2). This mutation has been reported in multiple hereditary breast and ovarian cancer (HBOC) cohorts (Garvin AM et al. J. Med. Genet. 1997 Dec;34:990-5; Thomassen M et al. Acta Oncol. 2008;47:772-7; Borg A et al. Hum. Mutat. 2010 Mar;31:E1200-40; Zhang S et al. Gynecol. Oncol. 2011 May;121:353-7; Litton JK et al. Cancer. 2012 Jan;118:321-5; Chong HK et al. PLoS ONE, 2014 May;9:e97408; Song H et al. Hum Mol Genet, 2014 Sep;23:4703-9; Labidi-Galy SI et al. Clin. Cancer Res. 2018 Jan;24:326-333; Heramb C et al. Hered Cancer Clin Pract, 2018 Jan;16:3; Bertelsen B et al. NPJ Genom Med, 2019 Jun;4:13). This mutation has also been reported in prostate and pancreatic cancer cohorts (Schwartz M et al. Clin Genet, 2019 12;96:579-584; Boyle JL et al. JCO Precis Oncol, 2020 Mar;4; Moses M et al. Oncotarget, 2020 Jan;11:15-21). Of note, this alteration is also designated as 7297delCT 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. - |
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 | - - |
Breast and/or ovarian cancer Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario | Oct 20, 2021 | - - |
Fanconi anemia complementation group D1 Pathogenic:1
| Pathogenic, criteria provided, single submitter | clinical testing | Victorian Clinical Genetics Services, Murdoch Childrens Research Institute | Jun 24, 2022 | Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with autosomal dominant BRCA2-related cancer and recessive fanconi anemia, complementation group D1 (MIM#605724). (I) 0108 - This gene is associated with both recessive and dominant disease (OMIM). (I) 0112 - The condition associated with this gene has incomplete penetrance. BRCA2-related cancers are known to have incomplete penetrance (GeneReviews). (I) 0201 - Variant is predicted to cause nonsense-mediated decay (NMD) and loss of protein (premature termination codon is located at least 54 nucleotides upstream of the final exon-exon junction). (SP) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD (v2) <0.01 for a condition (7 heterozygotes, 0 homozygotes). (SP) 0701 - Other NMD-predicted variants comparable to the one identified in this case have very strong previous evidence for pathogenicity. These variants have been reported many times as pathogenic (DECIPHER). (SP) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. This variant has been reported many times as pathogenic, and has been observed in individuals with breast, ovarian and colorectal cancers (ClinVar). (SP) 1205 - This variant has been shown to be maternally inherited (by trio analysis). (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign - |
BRCA2-related disorder Pathogenic:1
| Pathogenic, no assertion criteria provided | clinical testing | PreventionGenetics, part of Exact Sciences | Dec 12, 2023 | The BRCA2 c.7069_7070delCT variant is predicted to result in a frameshift and premature protein termination (p.Leu2357Valfs*2). This variant has been reported to be causative for hereditary cancer such as breast, ovarian, or colorectal cancers (reported as 7297delCT in Garvin et al. 1997. PubMed ID: 9429140; eTable 3, Pearlman et al. 2017. PubMed ID: 27978560; Table S3, Labidi-Galy et al. 2018. PubMed ID: 29084914; Heramb et al. 2018. PubMed ID: 29339979). This variant is reported in 0.0054% of alleles in individuals of European (Non-Finnish) descent in gnomAD and is interpreted as pathogenic in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/38082/). Frameshift variants in BRCA2 are expected to be pathogenic. This variant is interpreted as pathogenic. - |
Malignant tumor of breast Pathogenic:1
| Pathogenic, no assertion criteria provided | clinical testing | Department of Pathology and Laboratory Medicine, Sinai Health System | - | The BRCA2 p.Leu2357ValfsX2 variant was identified in 2 of 2856 proband chromosomes (frequency: 0.001) from individuals or families with Breast and/or Ovarian cancer (Garvin, 1997; Zhang, 2011). The variant was also identified in dbSNP (ID: rs80359636) “With pathogenic allele”, HGMD, LOVD, ClinVar database, the BIC database (31X with Important clinical importance), and UMD (34X as a class 5-causal variant). The variant was classified as a pathogenic variant by the Sharing Clinical Reports Project (SCRP) (submitted within the ClinVar database and derived from Myriad reports). The p.Leu2357ValfsX2 deletion variant is predicted to cause a frameshift, which alters the protein's amino acid sequence beginning at codon 2357 and leads to a premature stop codon 2 codons downstream. This alteration is then predicted to result in a truncated or absent protein and loss of function. Loss of function variants of the BRCA2 gene are an established mechanism of disease in hereditary breast and ovarian cancer and is the type of variant expected to cause the disorder. In summary, based on the above information, this variant meets our laboratory’s criteria to be classified as pathogenic. - |
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