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Genetic testing results in Slovenian male breast cancer cohort indicate the BRCA2 7806-2A > G founder variant could be associated with higher male breast cancer riskStrojnik, Ksenija ...To analyze the prevalence of pathogenic/likely pathogenic variants (P/LPVs) in BRCA1 and BRCA2 genes in the largest cohort of Slovenian male breast cancer (MBC) patients to date and to explore a ... possible correlation between the Slovenian founder variant BRCA2:c.7806-2A>G and predisposition to MBC. Methods We performed a retrospective analysis of 81 MBC cases who underwent genetic counseling and/or testing between January 1999 and May 2020. To explore a possible genotype%phenotype correlation, we performed additional analyses of 203 unrelated families with P/LPVs in BRCA2 and 177 cases of female breast cancer (FBC) in carriers of P/LPVs in BRCA2. Results Detection rate of P/LPVs in the BRCA1 and BRCA2 genes was 24.7% (20/81) with 95% of them in BRCA2 gene. The only two recurrent P/LPVs were BRCA2:c.7806-2A>G and BRCA2:c.3975_3978dupTGCT (9 and 5 MBC cases, respectively). In families with BRCA2:c.7806-2A>G, the incidence of MBC cases was higher compared to families with other P/ LPVs in BRCA2; however, the diference did not reach statistical signifcance (17.8% vs. 8.9%, p=0.105). BRCA2:c.7806- 2A>G was detected in both families with multiple cases of MBC. This splice-site variant represented a signifcantly higher proportion of all BRCA2 P/LPVs detected in MBC carriers compared to FBC carriers (47.4% vs. 26%, p=0.049). Conclusion We observed a high mutation detection rate and conclude this may be due to the prevalent BRCA2:c.7806-2A>G variant in Slovenia. Our results indicate a possible association between this variant and higher risk of breast cancer in males compared to other identifed P/LPVs in BRCA2.Source: Breast cancer research and treatment. - ISSN 0167-6806 (Vol. 188, 2021, str. 811–820)Type of material - article, component partPublish date - 2021Language - englishCOBISS.SI-ID - 61056771
Author
Strojnik, Ksenija |
Krajc, Mateja |
Šetrajčič Dragoš, Vita |
Stegel, Vida |
Novaković, Srdjan |
Blatnik, Ana, 9.8.1980-
Topics
rak dojke |
moški rak dojke |
družinski rak |
BRCA |
breast cancer |
male breast cancer |
BRCA |
hereditary breast cancer
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Strojnik, Ksenija | 51869 |
Krajc, Mateja | 27594 |
Šetrajčič Dragoš, Vita | 51870 |
Stegel, Vida | 23343 |
Novaković, Srdjan | 08007 |
Blatnik, Ana, 9.8.1980- | 32428 |
Source: Personal bibliographies
and: SICRIS
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