Retrospective Analysis of Clinical Outcomes With Neoadjuvant Cisplatin-Based Regimens for Muscle-Invasive Bladder Cancer
Pal SK, Ruel NH, Wilson TG, Yuh BE. Clin Genitourin Cancer. 2012 Sep 12. pii: S1558-7673(12)00171-1. doi: 10.1016/j.clgc.2012.08.004. [Epub ahead of print]

Source

Department of Medical Oncology & Experimental Therapeutics, City of Hope Comprehensive Cancer Center, Duarte, CA. Electronic address: spal@coh.org.

Abstract

BACKGROUND:

The benefit of neoadjuvant methotrexate, vinblastine, doxorubicin (Adriamycin), and cisplatin (MVAC) for muscle-invasive bladder cancer (MIBC) has been prospectively demonstrated in a phase III study. Extrapolating from comparative data in the metastatic setting, platinum doublets such as cisplatin-gemcitabine (CG) have been adopted. We sought to compare clinical outcomes in patients treated for MIBC with neoadjuvant CG and MVAC at our institution.

PATIENTS AND METHODS:

Patients with MIBC were identified from a prospectively maintained registry. Clinicopathologic information and clinical outcome data were obtained directly from the registry. When available, pharmacy records were reviewed to ascertain the use of growth factors and chemotherapy dose intensity (DI). Survival was compared in subgroups divided by the regimen of chemotherapy rendered (ie, CG vs. MVAC) using the Kaplan-Meier method.

RESULTS:

Median overall survival (OS) in the overall cohort (N = 61) was 23 months. OS was improved in patients receiving either MVAC or CG chemotherapy compared with patients receiving "other" chemotherapy (35.3 vs. 16.3 months; P = .055). Although the median OS associated with neoadjuvant CG numerically exceeded the survival associated with neoadjuvant MVAC (104.3 and 21.8 months, respectively), this was not statistically significant (P = .73). Pathologic downstaging predicted improved OS with both neoadjuvant CG and MVAC, and the rates of downstaging were similar with both regimens.

CONCLUSIONS:

Although warranting prospective validation, our data suggest that CG is a possible alternative neoadjuvant approach to traditional regimens such as MVAC for patients with MIBC.