Abstract
To identify characteristic features of breast cancers associated with an NBS1 mutation. To estimate and to compare 10-year survival rates for patients with early-onset breast cancer, with and without an NBS1 mutation. 4,566 women with stage I to stage III breast cancer, diagnosed at or below age 50, were tested for a founder mutation in the NBS1 gene. Information on tumor characteristics and on treatments received was retrieved from medical records. Dates of death were obtained from the Poland vital statistics registry. Survival curves for the mutation-positive and negative sub-cohorts were generated and were compared and the effect of an NBS1 mutation on survival was determined using the Cox proportional hazards model. 4566 patients were enrolled in the study, of whom 53 (1.2 %) carried a NBS1 mutation. Mutation carriers were similar to non-carriers in terms of tumor receptor status, grade, and lymph node status. The 10-year survival for NBS1 mutation carriers was 81.2 % (95 % CI 70.1–94.1 %) and for non-carriers was 79.4 % (95 % CI 78.0–80.9 %). The presence of an NBS1 mutation is not associated with prognosis (HR = 1.21; 95 % 0.67–2.19). The survival of women with breast cancer and a NBS1 mutation is similar to that of patients without a NBS1 mutation.
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Acknowledgments
We thank Ewa Putresza, Beata Miasek, Barbara Pawlowska, and Magda Zdzieblo for help with data collection and entry. We thank the patients who participated in this study.
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The authors declare that they have no conflict of interest.
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The member of The Polish Breast Cancer Consortium are listed in the Appendix.
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Appendix
Other members of the Polish Hereditary Breast Cancer Consortium. Błasińska-Morawiec M, Chosia M, Drosik K, Gozdecka-Grodecka S, Goźdź S, Grzybowska E, Haus O, Jeziorski A, Karczewska A, Kordek R, Kozak A, Kozak- Klonowska B, Lamperska K, Lange D, Mackiewicz A, Mituś J, Niepsuj S, Oszurek O, Gugala K, Morawiec Z, Mierzwa T, Posmyk M, Rozmiarek A, Ryś J, Szczylik C, Uciński M, Urbański K, Waśko B, and Wandzel P.
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Huzarski, T., Cybulski, C., Jakubowska, A. et al. Clinical characteristics of breast cancer in patients with an NBS1 mutation. Breast Cancer Res Treat 141, 471–476 (2013). https://doi.org/10.1007/s10549-013-2692-x
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DOI: https://doi.org/10.1007/s10549-013-2692-x