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  • Title: Contribution of the prostate limits the usefulness of survivin for the detection of bladder cancer.
    Author: Davies B, Chen J, Modugno F, Weissfeld J, Landsittel D, Dhir R, Nelson J, Getzenberg RH.
    Journal: J Urol; 2005 Nov; 174(5):1767-70. PubMed ID: 16217280.
    Abstract:
    PURPOSE: We determined if urinary survivin is influenced by the prostate and analyzed survivin levels in a healthy control population. MATERIALS AND METHODS: This was a blinded, retrospective analysis of frozen urine samples. Three groups were designated. Group 1 patients were diagnosed with prostate cancer and samples were collected immediately prior to radical retropubic prostatectomy. Group 2 patients had already undergone radical retropubic prostatectomy at least 3 months prior to providing a urine sample. Group 3 comprised healthy controls. Groups 1 and 2 patients were recruited at an institutional practice. Group 3 patients were recruited from the local community. RESULTS: The frequency of high survivin scores was much lower in patients who did not have a prostate (p < 0.0002). The survivin score was 2 in 35% and 44% of the patients in groups 1 and 3, respectively, while only 9% of those in group 2 had a survivin score of 2 (p < 0.0002). Of healthy controls 50% had a false-positive survivin score. Urinary survivin predicted prostate cancer poorly with 52% sensitivity and 50% specificity, and it did not predict any biological features of prostate cancer. CONCLUSIONS: Urinary survivin markedly decreases after prostatectomy. There is a 50% false-positive rate when using urinary survivin in controls. These 2 features make urinary survivin a poor bladder cancer biomarker.
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