期刊
EUROPEAN JOURNAL OF CANCER
卷 49, 期 10, 页码 2441-2448出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ejca.2013.02.026
关键词
Biochemical recurrence; Biological marker; Immunohistochemistry; Nuclear factor-kappa B; (NF-kappa B)
类别
资金
- Quebec's Ministere du Developpement economique
- de l'Innovation et de l'Exportation (MDEIE)
- Terry Fox Research Institute
- Sanofi fellowship award
- Fonds de recherche Quebec-Sante (FRQS)
- Universite de Montreal's Chair in Prostate Cancer
- FRSQ
- Canadian Institutes of Health Research (CIHR)
- Institut du cancer de Montreal
- Defi Canderel
Purpose: Over the last decade, we and others have uncovered a robust association between the nuclear localisation of nuclear factor-kappa B (NF-kappa B) p65, prostate cancer (PCa) aggressiveness and biochemical recurrence (BCR). Our goal was to validate these results in a large independent cohort of PCa patients who underwent radical prostatectomy. Experimental design: A set of 1826 fully annotated prostate cancers treated by radical prostatectomy were analysed in a tissue microarray (TMA) format for NF-kappa B p65 immunohistochemistry-based protein expression. We performed standard Cox proportional hazard regression models for follow-up data, bootstrap procedure for model internal validation, Harrell's concordance index for model discrimination and graphical assessment of predicted versus actual outcomes for model calibration. Results: We observed a significant association between an increase in the nuclear frequency of NF-kappa B p65 and Gleason score (P < 0.001), overall BCR (P < 0.001) and development of metastases (P = 0.001). NF-kappa B was found to be an independent predictor of BCR (P < 0.001, Cox regression). However its contribution to the predictive accuracy of a multivariate model, which included preoperative PSA, Gleason score, extraprostatic extension, lymph node invasion, seminal vesicle involvement and surgical margin status, was modest. Conclusions: Our study offers validating results linking NF-kappa B p65 with disease progression using a large cohort of European men. However, the contribution of NF-kappa B to a post-surgical predictive model appears modest. Further validating work should focus on evaluating the contribution of NF-kappa B p65 in pre-treatment models. (c) 2013 Elsevier Ltd. All rights reserved.
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