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Estrogen receptors α and β and aromatase as independent predictors for prostate cancer outcome

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https://hdl.handle.net/10037/10365
DOI
https://doi.org/10.1038/srep33114
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Date
2016-09-09
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Grindstad, Thea; Skjefstad, Kaja; Andersen, Sigve; Ness, Nora; Nordby, Yngve; Al-Saad, Samer; Fismen, Silje; Dønnem, Tom; Rakaee, Mehrdad; Busund, Lill-Tove; Bremnes, Roy M.; Richardsen, Elin
Abstract
Androgens are considered important in normal prostate physiology and prostate cancer (PCa) pathogenesis. However, androgen-targeted treatment preventing PCa recurrence is still lacking. This indicates additional mediators contributing to cancer development. We sought to determine the prognostic significance of estrogen receptors, ERα and -β, and the aromatase enzyme in PCa. Tissue microarrays were created from 535 PCa patients treated with radical prostatectomy. Expression of ERα, ERβ and aromatase were evaluated using immunohistochemistry. Representative tumor epithelial (TE) and tumor stromal (TS) areas were investigated separately. Survival analyses were used to evaluate the markers correlation to PCa outcome. In univariate analyses, ERα in TS was associated with delayed time to clinical failure (CF) (p = 0.042) and PCa death (p = 0.019), while ERβ was associated with reduced time to biochemical failure (BF) (p = 0.002). Aromatase in TS and TE was associated with increased time to BF and CF respectively (p = 0.016, p = 0.046). Multivariate analyses supported these observations, indicating an independent prognostic impact of all markers. When stratifying the analysis according to different surgical centers the results were unchanged. In conclusion, significant prognostic roles of ERα, ERβ and aromatase were discovered in the in PCa specimens of our large multicenter cohort.
Description
Published version. Source at http://dx.doi.org/10.1038/srep33114
Publisher
Nature Publishing Group
Citation
Grindstad, T. et al. Estrogen receptors α and β and aromatase as independent predictors for prostate cancer outcome. Sci. Rep. 6, 33114; doi: 10.1038/srep33114 (2016).
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