Expression of cell cycle-associated proteins in non-muscle-invasive bladder cancer: correlation with intravesical recurrence following transurethral resection

Urologic Oncology
Hosny M BehnsawyMasato Fujisawa

Abstract

The objective of this study was to evaluate the expression patterns of cell cycle-associated proteins in newly diagnosed non-muscle-invasive bladder cancer (NMIBC) to clarify the significance of these proteins as prognostic predictors in 161 consecutive patients undergoing transurethral resection (TUR). Expression levels of 7 cell cycle-associated proteins, including Aurora-A, c-erbB2, cyclin-D1, Ki-67, p21, p27, and p53, in TUR specimens were measured by immunohistochemical staining. Of the 7 proteins, weak expression of p21 was significantly associated with the incidence of intravesical recurrence (P = 0.012). Univariate analysis identified expression level of p21, tumor size, T stage, and concomitant carcinoma in situ (CIS) as significant predictors for intravesical recurrence (P = 0.0053, 0.0014, 0.024, and 0.035, respectively). Of these, p21 expression, tumor size, and concomitant CIS appeared to be independently related to intravesical recurrence (P = 0.029, 0.025, and 0.016, respectively). Furthermore, there were significant differences in intravesical recurrence-free survival according to positive patterns of these 3 independent factors; that is, intravesical recurrence occurred in 17 of 72 patients who were negative fo...Continue Reading

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Citations

Mar 8, 2014·World Journal of Surgical Oncology·Baoming RenSongdi Wu
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