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High expression of interleukin-11 is an independent indicator of poor prognosis in clear-cell renal cell carcinoma.

Abstract
Interleukin-11 (IL-11), a member of the IL-6 family of cytokines, exerts pleiotropic oncogenic activities by stimulating angiogenesis and metastasis in many cancer types. The present study aims to evaluate the impact of IL-11 expression on recurrence and mortality of patients with clear-cell renal cell carcinoma (ccRCC). We retrospectively enrolled 193 ccRCC patients undergoing nephrectomy at a single center. Clinicopathologic features, recurrence-free survival (RFS) and overall survival (OS) were recorded. IL-11 intensity was assessed by immunohistochemistry in tumor specimens. The Kaplan-Meier method was applied to compare survival curves. Cox regression models were used to analyze the impact of prognostic factors on RFS and OS. The concordance index (C-index) was calculated to assess predictive accuracy. High IL-11 expression is associated with increased risk of recurrence and poor survival for ccRCC patients (P < 0.001 and P < 0.001, respectively), especially those with early-stage disease (TNM stage I + II). Multivariate analyses confirmed that IL-11 expression was an independent prognostic factor for RFS and OS (P = 0.006 and P = 0.008, respectively). The predictive accuracy of well-established prognostic models was improved when IL-11 expression was integrated. In conclusion, high IL-11 expression is an independent predictor of poor prognosis in ccRCC patients. It may help identify patients who could benefit from additional treatments and closer follow up.
AuthorsDeng Pan, Le Xu, Haiou Liu, Weijuan Zhang, Weisi Liu, Yidong Liu, Qiang Fu, Jiejie Xu
JournalCancer science (Cancer Sci) Vol. 106 Issue 5 Pg. 592-7 (May 2015) ISSN: 1349-7006 [Electronic] England
PMID25702890 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Copyright© 2015 The Authors. Cancer Science published by Wiley Publishing Asia Pty Ltd on behalf of Japanese Cancer Association.
Chemical References
  • Biomarkers, Tumor
  • IL11 protein, human
  • Interleukin-11
Topics
  • Biomarkers, Tumor (analysis)
  • Carcinoma, Renal Cell (metabolism, mortality, pathology, surgery)
  • Cohort Studies
  • Female
  • Humans
  • Interleukin-11 (analysis)
  • Kaplan-Meier Estimate
  • Kidney Neoplasms (metabolism, mortality, pathology, surgery)
  • Male
  • Middle Aged
  • Neoplasm Recurrence, Local
  • Nephrectomy
  • Prognosis
  • Proportional Hazards Models
  • Retrospective Studies

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