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Yanus GA, Kuligina ES, Imyanitov EN. Hereditary Renal Cancer Syndromes. Med Sci (Basel) 2024; 12:12. [PMID: 38390862 PMCID: PMC10885096 DOI: 10.3390/medsci12010012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/26/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
Familial kidney tumors represent a rare variety of hereditary cancer syndromes, although systematic gene sequencing studies revealed that as many as 5% of renal cell carcinomas (RCCs) are associated with germline pathogenic variants (PVs). Most instances of RCC predisposition are attributed to the loss-of-function mutations in tumor suppressor genes, which drive the malignant progression via somatic inactivation of the remaining allele. These syndromes almost always have extrarenal manifestations, for example, von Hippel-Lindau (VHL) disease, fumarate hydratase tumor predisposition syndrome (FHTPS), Birt-Hogg-Dubé (BHD) syndrome, tuberous sclerosis (TS), etc. In contrast to the above conditions, hereditary papillary renal cell carcinoma syndrome (HPRCC) is caused by activating mutations in the MET oncogene and affects only the kidneys. Recent years have been characterized by remarkable progress in the development of targeted therapies for hereditary RCCs. The HIF2aplha inhibitor belzutifan demonstrated high clinical efficacy towards VHL-associated RCCs. mTOR downregulation provides significant benefits to patients with tuberous sclerosis. MET inhibitors hold promise for the treatment of HPRCC. Systematic gene sequencing studies have the potential to identify novel RCC-predisposing genes, especially when applied to yet unstudied populations.
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Affiliation(s)
- Grigory A. Yanus
- Department of Medical Genetics, Saint-Petersburg State Pediatric Medical University, 194100 Saint-Petersburg, Russia;
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, 197758 Saint-Petersburg, Russia;
| | - Ekaterina Sh. Kuligina
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, 197758 Saint-Petersburg, Russia;
| | - Evgeny N. Imyanitov
- Department of Medical Genetics, Saint-Petersburg State Pediatric Medical University, 194100 Saint-Petersburg, Russia;
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, 197758 Saint-Petersburg, Russia;
- Laboratory of Molecular Biology, Kurchatov Complex for Medical Primatology, National Research Centre “Kurchatov Institute”, 354376 Sochi, Russia
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Yanus GA, Sokolenko AP, Imyanitov EN. Northern origin of the BRCA2 c.5286 T > G founder allele. Breast Cancer Res Treat 2024; 204:191. [PMID: 38062337 DOI: 10.1007/s10549-023-07202-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 11/26/2023] [Indexed: 01/24/2024]
Affiliation(s)
- Grigory A Yanus
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Leningradskaya, 68, Pesochny-2, St. Petersburg, Russia, 197758
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, St. Petersburg, Litovskaya, 2, Russia, 194100
| | - Anna P Sokolenko
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Leningradskaya, 68, Pesochny-2, St. Petersburg, Russia, 197758.
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, St. Petersburg, Litovskaya, 2, Russia, 194100.
| | - Evgeny N Imyanitov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Leningradskaya, 68, Pesochny-2, St. Petersburg, Russia, 197758
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, St. Petersburg, Litovskaya, 2, Russia, 194100
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Yanus GA, Savonevich EL, Sokolenko AP, Romanko AA, Ni VI, Bakaeva EK, Gorustovich OA, Bizin IV, Imyanitov EN. Founder vs. non-founder BRCA1/2 pathogenic alleles: the analysis of Belarusian breast and ovarian cancer patients and review of other studies on ethnically homogenous populations. Fam Cancer 2023; 22:19-30. [PMID: 35596902 DOI: 10.1007/s10689-022-00296-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/08/2022] [Indexed: 01/13/2023]
Abstract
The spectrum of BRCA1/2 mutations demonstrates significant interethnic variations. We analyzed for the first time the entire BRCA1/2 coding region in 340 Belarusian cancer patients with clinical signs of BRCA1/2-related disease, including 168 women with bilateral and/or early-onset breast cancer (BC), 104 patients with ovarian cancer and 68 subjects with multiple primary malignancies involving BC and/or OC. BRCA1/2 pathogenic alleles were detected in 98 (29%) women, with 67 (68%) of these being represented by founder alleles. Systematic comparison with other relevant studies revealed that the founder effect observed in Belarus is among the highest estimates observed worldwide. These findings are surprising, given that the population of Belarus did not experience geographic or cultural isolation throughout history.
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Affiliation(s)
- G A Yanus
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint-Petersburg, Russia
| | - E L Savonevich
- Department of Obstetrics and Gynecology, Grodno State Medical University, Grodno, Belarus
| | - A P Sokolenko
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint-Petersburg, Russia. .,Department of Medical Genetics, St.-Petersburg Pediatric Medical University, Saint-Petersburg, Russia.
| | - A A Romanko
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint-Petersburg, Russia.,Department of Medical Genetics, St.-Petersburg Pediatric Medical University, Saint-Petersburg, Russia
| | - V I Ni
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint-Petersburg, Russia
| | - E Kh Bakaeva
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint-Petersburg, Russia
| | - O A Gorustovich
- Department of Obstetrics and Gynecology, Grodno State Medical University, Grodno, Belarus
| | - I V Bizin
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint-Petersburg, Russia
| | - E N Imyanitov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, Saint-Petersburg, Russia.,Department of Medical Genetics, St.-Petersburg Pediatric Medical University, Saint-Petersburg, Russia.,Department of Oncology, I.I. Mechnikov North-Western Medical University, St.-Petersburg, Russia
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Mitiushkina NV, Yanus GA, Kuligina ES, Laidus TA, Romanko AA, Kholmatov MM, Ivantsov AO, Aleksakhina SN, Imyanitov EN. Preparation of Duplex Sequencing Libraries for Archival Paraffin-Embedded Tissue Samples Using Single-Strand-Specific Nuclease P1. Int J Mol Sci 2022; 23:4586. [PMID: 35562977 PMCID: PMC9105346 DOI: 10.3390/ijms23094586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 12/04/2022] Open
Abstract
DNA from formalin-fixed paraffin-embedded (FFPE) tissues, which are frequently utilized in cancer research, is significantly affected by chemical degradation. It was suggested that approaches that are based on duplex sequencing can significantly improve the accuracy of mutation detection in FFPE-derived DNA. However, the original duplex sequencing method cannot be utilized for the analysis of formalin-fixed paraffin-embedded (FFPE) tissues, as FFPE DNA contains an excessive number of damaged bases, and these lesions are converted to false double-strand nucleotide substitutions during polymerase-driven DNA end repair process. To resolve this drawback, we replaced DNA polymerase by a single strand-specific nuclease P1. Nuclease P1 was shown to efficiently remove RNA from DNA preparations, to fragment the FFPE-derived DNA and to remove 5'/3'-overhangs. To assess the performance of duplex sequencing-based methods in FFPE-derived DNA, we constructed the Bottleneck Sequencing System (BotSeqS) libraries from five colorectal carcinomas (CRCs) using either DNA polymerase or nuclease P1. As expected, the number of identified mutations was approximately an order of magnitude higher in libraries prepared with DNA polymerase vs. nuclease P1 (626 ± 167/Mb vs. 75 ± 37/Mb, paired t-test p-value 0.003). Furthermore, the use of nuclease P1 but not polymerase-driven DNA end repair allowed a reliable discrimination between CRC tumors with and without hypermutator phenotypes. The utility of newly developed modification was validated in the collection of 17 CRCs and 5 adjacent normal tissues. Nuclease P1 can be recommended for the use in duplex sequencing library preparation from FFPE-derived DNA.
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Affiliation(s)
- Natalia V. Mitiushkina
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
| | - Grigory A. Yanus
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, 194100 St.-Petersburg, Russia
| | - Ekatherina Sh. Kuligina
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
| | - Tatiana A. Laidus
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
| | - Alexandr A. Romanko
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
| | - Maksim M. Kholmatov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
| | - Alexandr O. Ivantsov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, 194100 St.-Petersburg, Russia
| | - Svetlana N. Aleksakhina
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
| | - Evgeny N. Imyanitov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, 197758 St.-Petersburg, Russia; (N.V.M.); (G.A.Y.); (E.S.K.); (T.A.L.); (A.A.R.); (M.M.K.); (A.O.I.); (S.N.A.)
- Department of Medical Genetics, St.-Petersburg Pediatric Medical University, 194100 St.-Petersburg, Russia
- Department of Oncology, I.I. Mechnikov North-Western Medical University, 191015 St.-Petersburg, Russia
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Orlova KV, Yanus GA, Aleksakhina SN, Venina AR, Iyevleva AG, Demidov LV, Imyanitov EN. Lack of Response to Imatinib in Melanoma Carrying Rare KIT Mutation p.T632I. Case Rep Oncol 2019; 12:109-112. [PMID: 31043947 PMCID: PMC6477486 DOI: 10.1159/000495782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 11/22/2018] [Indexed: 11/19/2022] Open
Abstract
Approximately 15% of acral and mucous melanomas carry activating mutations in KIT oncogene. There is a diversity of spectrum of KIT mutations, with some of them rendering tumors responsive to imatinib, while others being imatinib-resistant or not studied yet. Here we present an acral melanoma patient with KIT р.T632I mutation, who failed to respond to imatinib.
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Affiliation(s)
- Kristina V Orlova
- Department of Biotherapy, N.N. Blokhin Russian Cancer Research Center, Moscow, Russian Federation
| | - Grigory A Yanus
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, Saint Petersburg, Russian Federation.,Department of Clinical Genetics, St.-Petersburg Pediatric Medical University, Saint Petersburg, Russian Federation
| | - Svetlana N Aleksakhina
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, Saint Petersburg, Russian Federation
| | - Aigul R Venina
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, Saint Petersburg, Russian Federation
| | - Aglaya G Iyevleva
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, Saint Petersburg, Russian Federation.,Department of Clinical Genetics, St.-Petersburg Pediatric Medical University, Saint Petersburg, Russian Federation
| | - Lev V Demidov
- Department of Biotherapy, N.N. Blokhin Russian Cancer Research Center, Moscow, Russian Federation
| | - Evgeny N Imyanitov
- Department of Tumor Growth Biology, N.N. Petrov National Medical Research Center of Oncology, Saint Petersburg, Russian Federation.,Department of Clinical Genetics, St.-Petersburg Pediatric Medical University, Saint Petersburg, Russian Federation.,Department of Oncology, I.I. Mechnikov North-Western Medical University, Saint Petersburg, Russian Federation.,Department of Oncology, St.-Petersburg State University, Saint Petersburg, Russian Federation
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Mitiushkina NV, Kholmatov MM, Venina AR, Tiurin VI, Yanus GA, Sokolova TN, Yatsuk OS, Zaitseva OA, Ivantsov AO, Kuligina ES, Togo AV, Imyanitov EN. PCR-based detection of EGFR, ALK, KRAS and BRAF mutations in Russian patients with lung adenocarcinoma: a single-center experience. Neoplasma 2018; 65:972-979. [PMID: 30334450 DOI: 10.4149/neo_2018_171225n843] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 04/11/2018] [Indexed: 11/08/2022]
Abstract
In contrast to other countries with predominantly white populations, Russian smoking-related lung cancers (LC) are mainly squamous cell carcinomas and approximately half lung adenocarcinomas (AdCa) are not related to tobacco consumption. Given that smoking significantly influences the probability of presence of actionable mutations in LC, one would expect that Russian lung AdCa patients would differ from other white populations in distribution of EGFR, ALK, KRAS and BRAF mutations. Herein, 2,336 consecutive lung AdCa cases, including 1,203 patients with known smoking status, were subjected to sequential testing for the above mutations. One quarter of lung AdCa patients carried either EGFR or ALK mutation with combined prevalence of 42% in those who had never smoked but only 8% in smokers. There was only a moderate difference in KRAS mutation frequency between ever- and never-smokers in EGFR/ALK-negative cases (31% vs. 23%), and this was mainly attributed to increased prevalence of G12C substitution in the former group. The occurrence of BRAF V600E mutation was 1.7% and 4% in EGFR/ALK/KRAS mutation-negative ever- and never-smokers, respectively. ALK testing of 470 EGFR-mutated tumors revealed only 1 (0.2%) instance of translocation. Similarly, KRAS testing identified 1 (1.25%) mutation in 80 EGFR-mutated AdCa and none in 48 ALK-rearranged AdCa. Therefore, concurrent actionable mutations in lung adenocarcinoma are exceptionally rare and sequential gene testing can be regarded as a reliable option.
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Affiliation(s)
- N V Mitiushkina
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia
| | - M M Kholmatov
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia.,St Petersburg Pediatric Medical University, Saint Petersburg, Russia
| | - A R Venina
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia
| | - V I Tiurin
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia
| | - G A Yanus
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia.,St Petersburg Pediatric Medical University, Saint Petersburg, Russia
| | - T N Sokolova
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia
| | - O S Yatsuk
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia
| | - O A Zaitseva
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia
| | - A O Ivantsov
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia.,St Petersburg Pediatric Medical University, Saint Petersburg, Russia
| | - E Sh Kuligina
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia
| | - A V Togo
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia.,St Petersburg Pediatric Medical University, Saint Petersburg, Russia
| | - E N Imyanitov
- N. N. Petrov Institute of Oncology, Saint Petersburg, Russia.,St Petersburg Pediatric Medical University, Saint Petersburg, Russia.,I. I. Mechnikov North-Western Medical University, Saint Petersburg, Russia.,St Petersburg State University, Saint Petersburg, Russia
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Gorodnova TV, Sokolenko AP, Ivantsov AO, Iyevleva AG, Suspitsin EN, Aleksakhina SN, Yanus GA, Togo AV, Maximov SY, Imyanitov EN. High response rates to neoadjuvant platinum-based therapy in ovarian cancer patients carrying germ-line BRCA mutation. Cancer Lett 2015; 369:363-7. [PMID: 26342406 DOI: 10.1016/j.canlet.2015.08.028] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/27/2015] [Accepted: 08/27/2015] [Indexed: 02/07/2023]
Abstract
Preoperative therapy provides an advantage for clinical drug assessment, as it involves yet untreated patients and facilitates access to the post-treatment biological material. Testing for Slavic founder BRCA mutations was performed for 225 ovarian cancer (OC) patients, who were treated by platinum-based neoadjuvant therapy. 34 BRCA1 and 1 BRCA2 mutation carriers were identified. Complete clinical response was documented in 12/35 (34%) mutation carriers and 8/190 (4%) non-carriers (P = 0.000002). Histopathologic response was observed in 16/35 (46%) women with the germ-line mutation versus 42/169 (25%) patients with the wild-type genotype (P = 0.02). Somatic loss of heterozygosity (LOH) for the remaining wild-type BRCA1 allele was detected only in 7/24 (29%) post-neoadjuvant therapy residual tumor tissues as compared to 9/11 (82%) BRCA1-associated OC, which were not exposed to systemic treatment before the surgery (P = 0.009). Furthermore, comparison of pre- and post-treatment tumor material obtained from the same patients revealed restoration of BRCA1 heterozygosity in 2 out of 3 sample pairs presenting with LOH at diagnosis. The obtained data confirm high sensitivity of BRCA-driven OC to platinating agents and provide evidence for a rapid selection of tumor cell clones without LOH during the course of therapy.
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Affiliation(s)
- Tatiana V Gorodnova
- Department of Gynecology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia
| | - Anna P Sokolenko
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia; Department of Medical Genetics, St. Petersburg Pediatric Medical University, St. Petersburg 194100, Russia
| | - Alexandr O Ivantsov
- Department of Medical Genetics, St. Petersburg Pediatric Medical University, St. Petersburg 194100, Russia; Department of Pathology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia
| | - Aglaya G Iyevleva
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia; Department of Medical Genetics, St. Petersburg Pediatric Medical University, St. Petersburg 194100, Russia
| | - Evgeny N Suspitsin
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia; Department of Medical Genetics, St. Petersburg Pediatric Medical University, St. Petersburg 194100, Russia
| | - Svetlana N Aleksakhina
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia
| | - Grigory A Yanus
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia; Department of Medical Genetics, St. Petersburg Pediatric Medical University, St. Petersburg 194100, Russia
| | - Alexandr V Togo
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia; Department of Medical Genetics, St. Petersburg Pediatric Medical University, St. Petersburg 194100, Russia
| | - Sergey Ya Maximov
- Department of Gynecology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia
| | - Evgeny N Imyanitov
- Department of Tumor Growth Biology, N.N. Petrov Institute of Oncology, St. Petersburg 197758, Russia; Department of Medical Genetics, St. Petersburg Pediatric Medical University, St. Petersburg 194100, Russia; Department of Oncology, I.I. Mechnikov North-Western Medical University, St. Petersburg 191015, Russia; Department of Oncology, St. Petersburg State University, St. Petersburg 199034, Russia.
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Suspitsin EN, Yanus GA, Sokolenko AP, Yatsuk OS, Zaitseva OA, Bessonov AA, Ivantsov AO, Heinstein VA, Klimashevskiy VF, Togo AV, Imyanitov EN. Development of breast tumors in CHEK2, NBN/NBS1 and BLM mutation carriers does not commonly involve somatic inactivation of the wild-type allele. Med Oncol 2014; 31:828. [PMID: 24415413 DOI: 10.1007/s12032-013-0828-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 12/20/2013] [Indexed: 12/23/2022]
Abstract
Somatic inactivation of the remaining allele is a characteristic feature of cancers arising in BRCA1 and BRCA2 mutation carriers, which determines their unprecedented sensitivity to some DNA-damaging agents. Data on tumor-specific status of the involved gene in novel varieties of hereditary breast cancer (BC) remain incomplete. We analyzed 32 tumors obtained from 30 patients with non-BRCA1/2 BC-associated germ-line mutations: 25 women were single mutation carriers (7 BLM, 15 CHEK2 and 3 NBN/NBS1) and 5 were double mutation carriers (2 BLM/BRCA1, 1 CHEK2/BLM, 1 CHEK2/BRCA1 and 1 NBN/BLM). Losses of heterozygosity affecting the wild-type allele were detected in none of the tumors from BLM mutation carriers, 3/18 (17 %) CHEK2-associated BC and 1/4 (25 %) NBN/NBS1-driven tumors. The remaining 28 BC were subjected to the sequence analysis of entire coding region of the involved gene; no somatic mutations were identified. We conclude that the tumor-specific loss of the wild-type allele is not characteristic for BC arising in CHEK2, NBN/NBS1 and BLM mutation carriers. Rarity of "second-hit" inactivation of the involved gene in CHEK2-, NBN/NBS1- and BLM-associated BC demonstrates their substantial biological difference from BRCA1/2-driven cancers and makes them poorly suitable for the clinical trials with cisplatin and PARP inhibitors.
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Sokolenko AP, Iyevleva AG, Mitiushkina NV, Suspitsin EN, Preobrazhenskaya E'V, Kuligina ES, Voskresenskiy DA, Lobeiko OS, Krylova NY, Gorodnova TV, Buslov KG, Bit-Sava EM, Dolmatov GD, Porhanova NV, Polyakov IS, Abysheva SN, Katanugina AS, Baholdin DV, Yanus GA, Togo AV, Moiseyenko VM, Maximov SY, Semiglazov VF, Imyanitov EN. Hereditary Breast-Ovarian Cancer Syndrome in Russia. Acta Naturae 2010. [DOI: 10.32607/20758251-2010-2-4-31-35] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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