Yıl: 2021 Cilt: 54 Sayı: 3 Sayfa Aralığı: 264 - 272 Metin Dili: İngilizce DOI: 10.5505/aot.2021.25348 İndeks Tarihi: 24-05-2022

Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience

Öz:
Objective: In this study, it was aimed to determine the frequency of BRCA1 and BRCA2 variants in patients admitted to our clinic with hereditary breast-ovarian cancer and / or family history and to evaluate them in the light of the literature. Materials and Methods: All patients in our study were selected according to the current NCCN guideline test criteria. The Ion Torrent ™ Oncomine ™ BRCA Research Assay was used to sequence the coding regions of the BRCA1 and BRCA2 genes in our patients. In addition, all patients with copy number changes were confirmed with SALSA® MLPA® Probemix P002 BRCA1 and Probemix P090 BRCA2 (MRC Holland). Results: Variants (pathogenic, likely pathogenic, variants of uncertain clinical significance, and copy number variations) were detected in 39 of the 149 patients included in the study. Novel variants that were not previously described in the literature were detected in two patients, one of the BRCA1 and one of the BRCA2 gene, respectively. Conclusion: In our study, the incidence of BRCA1 and BRCA2 variants was found to be 26.1%. This rate was higher than previous studies conducted in Turkey. Further studies are needed to identify common variants in the Turkish population and to evaluate the patogenity of variants of uncertain clinical significance.
Anahtar Kelime:

Herediter Meme-Over Kanseri ve BRCA1/BRCA2 Varyantları: Tek Merkez Deneyimi

Öz:
Amaç: Bu çalışmada kliniğimize herediter meme-over kanseri ve/veya aile öyküsü nedeniyle başvuran hastalardaki BRCA1 ve BRCA2 varyantlarının sıklığının tespiti ve literatür eşliğinde değerlendirilmesi amaçlanmıştır. Gereç ve Yöntem: Çalışmamızdaki tüm hastalar güncel NCCN rehberi test kriterleri doğrultusunda seçilerek dahil edilmiştir. Hastalarımızda BRCA1 ve BRCA2 genlerinin kodlayıcı bölgelerini dizilemek için Ion Torrent™ Oncomine™ BRCA Research Assay kullanılmıştır. Ayrıca kopya sayısı değişiklikleri tespit edilen tüm hastalar SALSA® MLPA® Probemix P002 BRCA1 ve Probemix P090 BRCA2 (MRC Holland) ile konfirme edildi. Bulgular: Çalışmaya dahil edilen toplam 149 hastanın 39’unda varyantlar (patojenik, muhtemel patojenik, klinik önemi belirsiz varyantlar ve kopya sayısı değişiklikleri) tespit edilmiştir. İki hastamızda (Biri BRCA1 geninde, biri BRCA2 geninde) daha önce literatürde tanımlanmamış yeni varyantlar tespit edilmiştir. Sonuç: Çalışmamızda BRCA1 ve BRCA2 varyantlarının görülme sıklığı %26,1 olarak belirlendi. Bu oran Türkiye'de yapılan önceki çalışmalara göre daha yüksek bulundu. Türk toplumundaki sık varyantların ve özellikle klinik önemi belirsiz varyantların patojenitesinin daha net değerlendirilebilmesi için daha fazla çalışmaya ihtiyaç vardır.
Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
  • 1. Ferlay J LM, Ervik M, Lam F, Colombet M, Mery L, Piñeros M, Znaor A, Soerjomataram I, Bray F (2020). Global Cancer Observatory: Cancer Tomorrow. Lyon, France: International Agency for Research on Cancer. Available from: https://gco.iarc.fr/tomorrow, accessed [updated 10.05.2021].
  • 2. Lynch HT, Lynch J, Conway T, Watson P, Feunteun J, Lenoir G, et al. Hereditary breast cancer and family cancer syndromes. World J Surg. 1994; 18(1): 21-31.
  • 3. Zhang B, Beeghly-Fadiel A, Long J, Zheng W. Genetic variants associated with breast-cancer risk: comprehensive research synopsis, meta-analysis, and epidemiological evidence. Lancet Oncol. 2011; 12(5): 477-88.
  • 4. Miki Y, Swensen J, Shattuck-Eidens D, Futreal PA, Harshman K, Tavtigian S, et al. A strong candidate for the breast and ovarian cancer susceptibility gene BRCA1. Science. 1994; 266(5182): 66-71.
  • 5. Wooster R, Bignell G, Lancaster J, Swift S, Seal S, Mangion J, et al. Identification of the breast cancer susceptibility gene BRCA2. Nature. 1995; 378(6559): 789-92.
  • 6. Prevalence and penetrance of BRCA1 and BRCA2 mutations in a population-based series of breast cancer cases. Anglian Breast Cancer Study Group. Br J Cancer. 2000; 83(10): 1301-8.
  • 7. Kobayashi H, Ohno S, Sasaki Y, Matsuura M. Hereditary breast and ovarian cancer susceptibility genes (review). Oncol Rep. 2013; 30(3): 1019-29.
  • 8. Daly MB, Pilarski R, Yurgelun MB, Berry MP, Buys SS, Dickson P, et al. NCCN Guidelines Insights: Genetic/Familial High-Risk Assessment: Breast, Ovarian, and Pancreatic, Version 1.2020. J Natl Compr Canc Netw. 2020; 18(4): 380-391.
  • 9. Chen S, Parmigiani G. Meta-analysis of BRCA1 and BRCA2 penetrance. J Clin Oncol. 2007; 25(11): 1329-33.
  • 10. Pop L, Suciu I, Ionescu O, Bacalbasa N, Ionescu P. The role of novel poly (ADP-ribose) inhibitors in the treatment of locally advanced and metastatic Her- 2/neu negative breast cancer with inherited germline BRCA1/2 mutations. A review of the literature. J Med Life. 2021; 14(1): 17-20.
  • 11. [National Comprehensive Cancer Network. Genetic/Familial High-Risk Assessment: Breast, Ovarian, and Pancreatic (Version 2.2021). https:// www.nccn.org/professionals/physician_gls/pdf/genet ics_bop.pdf. Accessed: 10.05.2021].
  • 12. McAlarnen L, Stearns K, Uyar D. Challenges of Genomic Testing for Hereditary Breast and Ovarian Cancers. Appl Clin Genet. 2021; 14: 1-9.
  • 13. Abdel-Razeq H, Abujamous L, Jadaan D. Patterns and Prevalence of Germline BRCA1 and BRCA2 Mutations among High-Risk Breast Cancer Patients in Jordan: A Study of 500 Patients. J Oncol. 2020; 2020: 8362179.
  • 14. Fujisawa F, Tamaki Y, Inoue T, Nakayama T, Yagi T, Kittaka N, et al. Prevalence of BRCA1 and BRCA2 mutations in Japanese patients with triple-negative breast cancer: A single institute retrospective study. Mol Clin Oncol. 2021; 14(5): 96.
  • 15. Solmaz AE, Onay H, Yeniay L, Gokmen E, Ozdemir N, Alanyali S, et al. BRCA1-BRCA2 mutation analysis results in 910 individuals: Mutation distribution and 8 novel mutations. Cancer Genet. 2020; 241: 20-24.
  • 16. Demir S, Tozkir H, Gurkan H, Atli EI, Yalcintepe S, Atli E, et al. Genetic screening results of individuals with high risk BRCA-related breast/ovarian cancer in Trakya region of Turkey. J BUON. 2020; 25(3): 1337- 1347.
  • 17. Bahsi T, Erdem HB. Spectrum of BRCA1/ BRCA2 variants in 1419 Turkish breast and ovarian cancer patients: a single center study. Turkish Journal of Biochemistry. 2020; 45(1) :83-90.
  • 18. Rosen MN, Goodwin RA, Vickers MM. BRCA mutated pancreatic cancer: A change is coming. World Journal of Gastroenterology. 2021; 27(17): 1943-1958.
  • 19. Bahsi T, Saat H. Spectrum of variants detected in cancer susceptibility genes analyzed in turkish pancreatic cancer patients. Acta Oncologica Turcica. 2020; 53(1): 140-144.
  • 20. Germani A, Libi F, Maggi S, Stanzani G, Lombardi A, Pellegrini P, et al. Rapid detection of copy number variations and point mutations in BRCA1/2 genes using a single workflow by ion semiconductor sequencing pipeline. Oncotarget. 2018; 9(72): 33648- 33655.
  • 21. Vendrell JA, Vilquin P, Larrieux M, Van Goethem C, Solassol J. Benchmarking of Amplicon- Based Next-Generation Sequencing Panels Combined with Bioinformatics Solutions for Germline BRCA1 and BRCA2 Alteration Detection. J Mol Diagn. 2018; 20(6): 754-764.
APA Gezdirici A, İLİ E, DEĞİRMENCİ B, GÜMÜŞ A, Özdemir G, ERMAN N, YAVAŞ C (2021). Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. , 264 - 272. 10.5505/aot.2021.25348
Chicago Gezdirici Alper,İLİ Ezgi Gökpınar,DEĞİRMENCİ Banu,GÜMÜŞ Aydeniz Aydın,Özdemir Gizem,ERMAN Nihan Alişya,YAVAŞ Cüneyd Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. (2021): 264 - 272. 10.5505/aot.2021.25348
MLA Gezdirici Alper,İLİ Ezgi Gökpınar,DEĞİRMENCİ Banu,GÜMÜŞ Aydeniz Aydın,Özdemir Gizem,ERMAN Nihan Alişya,YAVAŞ Cüneyd Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. , 2021, ss.264 - 272. 10.5505/aot.2021.25348
AMA Gezdirici A,İLİ E,DEĞİRMENCİ B,GÜMÜŞ A,Özdemir G,ERMAN N,YAVAŞ C Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. . 2021; 264 - 272. 10.5505/aot.2021.25348
Vancouver Gezdirici A,İLİ E,DEĞİRMENCİ B,GÜMÜŞ A,Özdemir G,ERMAN N,YAVAŞ C Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. . 2021; 264 - 272. 10.5505/aot.2021.25348
IEEE Gezdirici A,İLİ E,DEĞİRMENCİ B,GÜMÜŞ A,Özdemir G,ERMAN N,YAVAŞ C "Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience." , ss.264 - 272, 2021. 10.5505/aot.2021.25348
ISNAD Gezdirici, Alper vd. "Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience". (2021), 264-272. https://doi.org/10.5505/aot.2021.25348
APA Gezdirici A, İLİ E, DEĞİRMENCİ B, GÜMÜŞ A, Özdemir G, ERMAN N, YAVAŞ C (2021). Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. ACTA ONCOLOGICA TURCICA, 54(3), 264 - 272. 10.5505/aot.2021.25348
Chicago Gezdirici Alper,İLİ Ezgi Gökpınar,DEĞİRMENCİ Banu,GÜMÜŞ Aydeniz Aydın,Özdemir Gizem,ERMAN Nihan Alişya,YAVAŞ Cüneyd Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. ACTA ONCOLOGICA TURCICA 54, no.3 (2021): 264 - 272. 10.5505/aot.2021.25348
MLA Gezdirici Alper,İLİ Ezgi Gökpınar,DEĞİRMENCİ Banu,GÜMÜŞ Aydeniz Aydın,Özdemir Gizem,ERMAN Nihan Alişya,YAVAŞ Cüneyd Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. ACTA ONCOLOGICA TURCICA, vol.54, no.3, 2021, ss.264 - 272. 10.5505/aot.2021.25348
AMA Gezdirici A,İLİ E,DEĞİRMENCİ B,GÜMÜŞ A,Özdemir G,ERMAN N,YAVAŞ C Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. ACTA ONCOLOGICA TURCICA. 2021; 54(3): 264 - 272. 10.5505/aot.2021.25348
Vancouver Gezdirici A,İLİ E,DEĞİRMENCİ B,GÜMÜŞ A,Özdemir G,ERMAN N,YAVAŞ C Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience. ACTA ONCOLOGICA TURCICA. 2021; 54(3): 264 - 272. 10.5505/aot.2021.25348
IEEE Gezdirici A,İLİ E,DEĞİRMENCİ B,GÜMÜŞ A,Özdemir G,ERMAN N,YAVAŞ C "Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience." ACTA ONCOLOGICA TURCICA, 54, ss.264 - 272, 2021. 10.5505/aot.2021.25348
ISNAD Gezdirici, Alper vd. "Hereditary Breast-Ovarian Cancer and BRCA1/BRCA2 Variants: A Single Center Experience". ACTA ONCOLOGICA TURCICA 54/3 (2021), 264-272. https://doi.org/10.5505/aot.2021.25348