Preoperative insulin-like growth factor-binding protein-3 (IGFBP-3) blood level predicts Gleason sum upgrading - Abstract

Department of Cellular and Molecular Biology and Pathology "L. Califano", University of Naples "Federico II", Naples, Italy.

 

About 43% of men with low Gleason grade prostate cancer (PCa) at biopsy will be finally diagnosed with high-grade PCa at radical prostatectomy (RP). Gleason sum at RP is a good indicator of biochemical recurrence and poor clinical outcome. Therefore, there is a need to improve clinical evaluation of PCa aggressiveness in order to choice appropriate treatment. To this aim an easy-available tool is represented by circulating biomarkers. Among these, the best candidates are some molecules involved in PCa pathogenesis such as IGFBP-2 and IGFBP-3, IL-6, and its soluble receptor (SIL-6R).

In this study, we evaluated the ability of preoperative IGFBP-2, IGFBP-3, IL-6, and SIL-6R serum levels to predict Gleason score upgrade in 52 PCa patients.

We found that IGFBP-3 median levels were significantly lower in patients who showed Gleason upgrading from biopsy to RP (P = 0.024). We also found an association between biopsy T-stage and Gleason Upgrade (P = 0.011). Using multivariate logistic regression model, we demonstrated that the association of IGFBP-3 serum levels together with biopsy T-stage and biopsy Gleason score was useful to calculate a prognostic risk score. ROC curve analysis of risk score showed a good ability to predict GSU (AUC = 0.81; 95% CI 0.69-0.93).

Our results suggest that preoperative IGFBP-3 circulating levels determination may be useful to predict Gleason score upgrading alone and/or in combination with biopsy T-stage and biopsy Gleason score.

Written by:
Terracciano D, Bruzzese D, Ferro M, Mazzarella C, Di Lorenzo G, Altieri V, Mariano A, Macchia V, Di Carlo A.   Are you the author?

Reference: Prostate. 2011 Apr 25. Epub ahead of print.
doi: 10.1002/pros.21411

PubMed Abstract
PMID: 21520165

UroToday.com Prostate Cancer Section

 

 

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