1. The prostate cancer gene 3 (PCA3) urine test in men with previous negative biopsies: does free-to-total prostate-specific antigen ratio influence the performance of the PCA3 score in predicting positive biopsies?
- Author
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Hartwig Huland, Martijn P.M.Q. van Gils, Clément-Claude Abbou, Laurence Bastien, Arnulf Stenzl, Mesut Remzi, Susan Feyerabend, Alexandre de la Taille, Alexander B. Stillebroer, Martina Tinzl, Alexander Haese, Jack A. Schalken, Hendrik Van Poppel, Peter F.A. Mulders, Michael Marberger, and Guillaume Ploussard
- Subjects
Gynecology ,PCA3 ,medicine.medical_specialty ,medicine.diagnostic_test ,Receiver operating characteristic ,business.industry ,Urology ,Cancer ,Odds ratio ,medicine.disease ,Prostate-specific antigen ,Prostate cancer ,medicine.anatomical_structure ,Prostate ,Biopsy ,medicine ,business - Abstract
Study Type – Diagnosis (exploratory cohort) Level of Evidence 2b OBJECTIVE To determine the performance characteristics of the prostate cancer gene 3 (PCA3) score on the outcome of biopsy relative to different ranges of free-to-total prostate-specific antigen (PSA) ratio (f/tPSA) in men with a previous negative biopsy and a PSA level of 2.5–10 ng/mL, as urine tests like PCA3 are currently under investigation in order to improve prostate cancer diagnosis and to decrease the rate of unnecessary rebiopsies. PATIENTS AND METHODS Data from the previous prospective European multicentre study were reviewed. Only patients with a PSA level of 2.5–10 ng/mL were included in the present study. In all, 301 patients had complete data. The diagnostic accuracy of the PCA3 score for predicting a positive biopsy outcome was studied using sensitivity, specificity, negative and positive predictive values. The PCA3 performance was evaluated relative to three different subgroups of f/tPSA, as follows: >20% (group 1), 10–20% (group 2) and 30, vs 10.3%, 15.5% and 28.6% when the PCA3 score was 30 was a significant independent predictor of positive biopsies (odds ratio 3.01; 95% confidence interval 1.74–5.23; P < 0.001). CONCLUSIONS PCA3 remained a better predictor of prostate cancer than f/tPSA. In men with a f/tPSA of >10%, the use of the PCA3 score was highly correlated with the risk of having cancer on re-biopsy, and could prevent unnecessary prostate biopsies if the value is low.
- Published
- 2010
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