Genetic testing in Poland and Ukraine: should comprehensive germline testing of BRCA1 and BRCA2 be recommended for women with breast and ovarian cancer?
- PMID: 32772980
- PMCID: PMC7443769
- DOI: 10.1017/S0016672320000075
Genetic testing in Poland and Ukraine: should comprehensive germline testing of BRCA1 and BRCA2 be recommended for women with breast and ovarian cancer?
Abstract
Purpose: To characterize the spectrum of BRCA1 and BRCA2 pathogenic germline variants in women from south-west Poland and west Ukraine affected with breast or ovarian cancer. Testing in women at high risk of breast and ovarian cancer in these regions is currently mainly limited to founder mutations.
Methods: Unrelated women affected with breast and/or ovarian cancer from Poland (n = 337) and Ukraine (n = 123) were screened by targeted sequencing. Excluded from targeted sequencing were 34 Polish women who had previously been identified as carrying a founder mutation in BRCA1. No prior testing had been conducted among the Ukrainian women. Thus, this study screened BRCA1 and BRCA2 in the germline DNA of 426 women in total.
Results: We identified 31 and 18 women as carriers of pathogenic/likely pathogenic (P/LP) genetic variants in BRCA1 and BRCA2, respectively. We observed five BRCA1 and eight BRCA2 P/LP variants (13/337, 3.9%) in the Polish women. Combined with the 34/337 (10.1%) founder variants identified prior to this study, the overall P/LP variant frequency in the Polish women was thus 14% (47/337). Among the Ukrainian women, 16/123 (13%) women were identified as carrying a founder mutation and 20/123 (16.3%) were found to carry non-founder P/LP variants (10 in BRCA1 and 10 in BRCA2).
Conclusions: These results indicate that genetic testing in women at high risk of breast and ovarian cancer in Poland and Ukraine should not be limited to founder mutations. Extended testing will enhance risk stratification and management for these women and their families.
Keywords: BRCA1; BRCA2; breast cancer; founder mutations; genetic susceptibility; genetic testing; ovarian cancer.
Conflict of interest statement
The authors declare that they have no conflicts of interest.
Similar articles
-
Prevalence of BRCA1 and BRCA2 pathogenic and likely pathogenic variants in non-selected ovarian carcinoma patients in Brazil.BMC Cancer. 2019 Jan 3;19(1):4. doi: 10.1186/s12885-018-5235-3. BMC Cancer. 2019. PMID: 30606148 Free PMC article.
-
Novel germline mutations and unclassified variants of BRCA1 and BRCA2 genes in Chinese women with familial breast/ovarian cancer.BMC Cancer. 2016 Feb 6;16:64. doi: 10.1186/s12885-016-2107-6. BMC Cancer. 2016. PMID: 26852015 Free PMC article.
-
BRCA1 and BRCA2 unclassified variants and missense polymorphisms in Algerian breast/ovarian cancer families.Dis Markers. 2012;32(6):343-53. doi: 10.3233/DMA-2012-0893. Dis Markers. 2012. PMID: 22684231 Free PMC article.
-
Twenty Years of BRCA1 and BRCA2 Molecular Analysis at MMCI - Current Developments for the Classification of Variants.Klin Onkol. 2019 Summer;32(Supplementum2):51-71. doi: 10.14735/amko2019S51. Klin Onkol. 2019. PMID: 31409081 Review. English.
-
Prevalence of specific and recurrent/founder pathogenic variants in BRCA genes in breast and ovarian cancer in North Africa.BMC Cancer. 2022 Feb 25;22(1):208. doi: 10.1186/s12885-022-09181-4. BMC Cancer. 2022. PMID: 35216584 Free PMC article.
Cited by
-
Untapped Potential of Poly(ADP-Ribose) Polymerase Inhibitors: Lessons Learned From the Real-World Clinical Homologous Recombination Repair Mutation Testing.World J Oncol. 2024 Aug;15(4):562-578. doi: 10.14740/wjon1820. Epub 2024 Jun 11. World J Oncol. 2024. PMID: 38993246 Free PMC article.
-
Landscape of germline BRCA1/BRCA2 variants in breast and ovarian cancer in Peru.Front Oncol. 2023 Aug 17;13:1227864. doi: 10.3389/fonc.2023.1227864. eCollection 2023. Front Oncol. 2023. PMID: 37664050 Free PMC article.
-
BRCA1/2 potential founder variants in the Jordanian population: an opportunity for a customized screening panel.Hered Cancer Clin Pract. 2023 Jul 3;21(1):11. doi: 10.1186/s13053-023-00256-2. Hered Cancer Clin Pract. 2023. PMID: 37400873 Free PMC article. Review.
-
Somatic DNA Damage Response and Homologous Repair Gene Alterations and Its Association With Tumor Variant Burden in Breast Cancer Patients With Occupational Exposure to Pesticides.Front Oncol. 2022 Jul 8;12:904813. doi: 10.3389/fonc.2022.904813. eCollection 2022. Front Oncol. 2022. PMID: 35875117 Free PMC article.
-
Ethnicity-specific BRCA1, BRCA2, PALB2, and ATM pathogenic alleles in breast and ovarian cancer patients from the North Caucasus.Breast Cancer Res Treat. 2024 Jan;203(2):307-315. doi: 10.1007/s10549-023-07135-3. Epub 2023 Oct 18. Breast Cancer Res Treat. 2024. PMID: 37851290
References
-
- Berliner, J.L., Fay, A.M. & Practice Issues Subcommittee of the National Society of Genetic Counselors' Familial Cancer Risk Counseling Special Interest Group (2007). Risk assessment and genetic counseling for hereditary breast and ovarian cancer: recommendations of the National Society of Genetic Counselors. Journal of Genetic Counseling 16, 241–260. - PubMed
-
- Cybulski, C., Kluzniak, W., Huzarski, T. et al. (2019). The spectrum of mutations predisposing to familial breast cancer in Poland. International Journal of Cancer 145, 3311–3320. - PubMed
-
- Gorski, B., Cybulski, C., Huzarski, T. et al. (2005). Breast cancer predisposing alleles in Poland. Breast Cancer Research and Treatment 92, 19–24. - PubMed
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Medical
Research Materials
Miscellaneous