Prognostic Value of Survivin in Locally Advanced Prostate Cancer: Study Based on RTOG 8610

Min Zhang, Alex Ho, Elizabeth H. Hammond, Yoshiyuki Suzuki, R. Scott Bermudez, R. Jeffrey Lee, Michael Pilepich, William U. Shipley, Howard Sandler, Li Yan Khor, Alan Pollack, Arnab Chakravarti

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Purpose: To examine the prognostic value of nuclear and cytoplasmic survivin expression in men with locally advanced prostate cancer who were enrolled in Radiation Therapy Oncology Group (RTOG) protocol 8610. Methods and Materials: RTOG 8610 was a Phase III randomized study comparing the effect of radiotherapy plus short-term androgen deprivation with radiotherapy alone. Of the 456 eligible patients, 68 patients had suitably stained tumor material for nuclear survivin analysis and 65 patients for cytoplasmic survivin. Results: Compared with patients with nuclear survivin intensity scores of ≤191.2, those with intensity scores >191.2 had significantly improved prostate cancer survival (hazard ratio [HR], 0.45; 95% confidence interval [CI], 0.20-1.00, p = 0.0452). On multivariate analysis, nuclear survivin intensity scores >191.2 were significantly associated with improved overall survival (HR, 0.46; 95% CI, 0.25-0.86; p = 0.0156) and prostate cancer survival (HR, 0.36; 95% CI, 0.16-0.84; p = 0.0173). On univariate analysis, compared with patients with cytoplasmic survivin integrated optical density ≤82.7, those with an integrated optical density >82.7 showed a significantly increased risk of local progression (HR, 2.49; 95% CI, 1.03-6.01; p = 0.0421). Conclusion: Nuclear overexpression of survivin was associated with improved overall and prostate cancer survival on multivariate analysis, and cytoplasmic overexpression of survivin was associated with increased rate of local progression on univariate analysis in patients with locally advanced prostate cancer treated on RTOG 8610. Our results might reflect the different functions of survivin and its splice variants, which are known to exist in distinct subcellular compartments.

Original languageEnglish (US)
Pages (from-to)1033-1042
Number of pages10
JournalInternational Journal of Radiation Oncology Biology Physics
Volume73
Issue number4
DOIs
StatePublished - Mar 15 2009

Keywords

  • Prognostic factor
  • Prostate cancer
  • Radiotherapy
  • Survivin

ASJC Scopus subject areas

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Radiation
  • Cancer Research

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    Zhang, M., Ho, A., Hammond, E. H., Suzuki, Y., Bermudez, R. S., Lee, R. J., Pilepich, M., Shipley, W. U., Sandler, H., Khor, L. Y., Pollack, A., & Chakravarti, A. (2009). Prognostic Value of Survivin in Locally Advanced Prostate Cancer: Study Based on RTOG 8610. International Journal of Radiation Oncology Biology Physics, 73(4), 1033-1042. https://doi.org/10.1016/j.ijrobp.2008.06.1489