JOURNAL ARTICLE

Prognostic factors for survival in 1059 patients treated with sunitinib for metastatic renal cell carcinoma

R J Motzer, B Escudier, R Bukowski, B I Rini, T E Hutson, C H Barrios, X Lin, K Fly, E Matczak, M E Gore
British Journal of Cancer 2013 June 25, 108 (12): 2470-7
23695024

BACKGROUND: Prognostic factors for progression-free survival (PFS), overall survival (OS), and long-term OS (≥30 months) were investigated in sunitinib-treated patients with metastatic renal cell carcinoma (RCC).

METHODS: Data were pooled from 1059 patients in six trials. Baseline variables, including ethnicity, were analysed for prognostic significance by Cox proportional-hazards model.

RESULTS: Median PFS and OS were 9.7 and 23.4 months, respectively. Multivariate analysis of PFS and OS identified independent predictors, including ethnic origin, Eastern Cooperative Oncology Group performance status, time from diagnosis to treatment, prior cytokine use, haemoglobin, lactate dehydrogenase, corrected calcium, neutrophils, platelets, and bone metastases (OS only). Characteristics of long-term survivors (n=215, 20%) differed from those of non-long-term survivors; independent predictors of long-term OS included ethnic origin, bone metastases, and corrected calcium. There were no differences in PFS (10.5 vs 7.2 months; P=0.1006) or OS (23.8 vs 21.4 months; P=0.2135) in white vs Asian patients; however, there were significant differences in PFS (10.5 vs 5.7 months; P<0.001) and OS (23.8 vs 17.4 months; P=0.0319) in white vs non-white, non-Asian patients.

CONCLUSION: These analyses identified risk factors to survival with sunitinib, including potential ethnic-based differences, and validated risk factors previously reported in advanced RCC.

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