Prognostic Significance of Cytoreductive Nephrectomy in Patients With Synchronous Metastases From Renal Cell Carcinoma Treated With First-Line Sunitinib: A European Multiinstitutional Study

Introduction/BackgroundThe aim of this study was to evaluate the prognostic role of CN in patients with mRCC and synchronous metastases treated with the VEGF receptor TKI, sunitinib.Patients and MethodsPatients with a diagnosis of metastases before, at the time of, or within 3 months from the diagnosis of renal cell carcinoma (RCC) and first-line treatment with sunitinib were included. Baseline characteristics were correlated with overall survival (OS) according to hazard ratios estimated from univariate Cox proportional hazards models. Significant factors were then included in a multivariate Cox proportional hazards model.ResultsOne hundred eighty-six patients treated between January 2006 and March 2012 were selected. Thirty-six (19%) had not undergone CN. CN was offered to younger patients with better prognoses. Patients who underwent CN lived significantly longer than patients without CN (median OS, 23.9 [95% confidence interval (CI), 20.8-28.8] vs. 9 [95% CI, 4-16.4] months; P < .001). Multivariate analysis showed that CN had an independent prognostic significance. No specific subgroup benefiting from CN was identified.ConclusionCN was an independent favorable prognostic factor in patients with synchronous metastases from RCC, treated with sunitinib. Information regarding the selection of mRCC patients likely to benefit from CN might be derived by ongoing phase III trials.