Abstract
Purpose
Neoadjuvant chemotherapy (NAC) can downstage invasive bladder cancers prior to radical cystectomy (RC) and improve overall survival. However, the optimal management in patients with persistent non-organ confined disease (pT3–T4 and/or pN+) following RC has not been completely defined. The aim of this study was to describe outcomes associated with the use of adjuvant chemotherapy (AC) in patients with residual non-organ confined cancer at RC following NAC.
Materials and methods
Using data from a high-volume referral institution, pT3–T4 and/or pN+ patients who received NAC and then also RC were identified. Recurrence-free survival (RFS) and cancer-specific survival (CSS) were assessed with Kaplan–Meier analysis.
Results
From 2001 to 2013, 161 patients received NAC and then RC. Eighty-eight pT3–T4 and/or pN+ patients were identified. Twenty-nine (33 %) received AC. Adjuvant chemotherapy in the majority of patients was carboplatin-based (16), followed by cisplatin (8) and other, mainly taxane-containing regimens (5). The median RFS was 17.5 months in the AC and 13.7 months in the non-AC group (p = 0.78). AC remained an insignificant predictor for RFS after adjusting for pT, pN and margin status (HR 0.89, 95 % CI 0.48–1.68]). CSS was 23 and 22 months (p = 0.65) and remained insignificant after adjusting for pathologic confounders.
Conclusions
In our current study population, adjuvant conventional cytotoxic chemotherapy was not associated with significant improvements in RFS or CSS. The choice of AC regimens, and incorporation of newer treatments, may be the key for improving outcomes in this high-risk patient group.
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Authors’ contribution
Kamran Zargar-Shoshtari was involved in protocol/project development, data collection, data analysis and manuscript writing. Michael Kongnyuy took part in data collection. Pranav Sharma and Philippe E Spiess were involved in protocol/project development and manuscript editing. Mayer N Fishman took part in manuscript writing. Scott M. Gilbert, Michael A Poch, Julio M Powsang and Jingsong Zhang were involved in manuscript editing. Wade J Sexton took part in protocol/project development, data analysis and manuscript editing.
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IRB’s approval was obtained for the use of patients’ data for the purpose of this study. All patients are informed at the time of surgical consent that their clinical data may be used for research purposes.
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Zargar-Shoshtari, K., Kongnyuy, M., Sharma, P. et al. Clinical role of additional adjuvant chemotherapy in patients with locally advanced urothelial carcinoma following neoadjuvant chemotherapy and cystectomy. World J Urol 34, 1567–1573 (2016). https://doi.org/10.1007/s00345-016-1825-3
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DOI: https://doi.org/10.1007/s00345-016-1825-3