Cabozantinib is approved for the treatment of renal cell carcinoma (RCC). However, prognostic factors are still lacking in this context. The aim of this study was to evaluate prognostic factors in RCC patients treated with second- or third-line cabozantinib. A multicenter retrospective real-world study was conducted, involving 32 worldwide centers. A total of 237 patients with histologically confirmed clear-cell and non-clear-cell RCC who received cabozantinib as second- or third-line therapy for metastatic disease were included. We analyzed overall survival (OS), progression-free survival (PFS) and time-to-strategy failure (TTSF) using Kaplan-Meier curves. Cox proportional models were used at univariate and multivariate analyses.The median PFS and OS of cabozantinib were 7.76 months (95% CI 6.51-10.88) and 11.57 months (95% CI 10.90-not reached (NR)) as second-line and 11.38 months (95% CI 5.79-NR) and NR (95% CI 11.51-NR) as third-line therapy. The median TTSF and OS were 11.57 and 15.52 months with the sequence of cabozantinib-nivolumab and 25.64 months and NR with nivolumab-cabozantinib, respectively. The difference between these two sequences was statistically significant only in good-risk patients. In the second-line setting, hemoglobin (Hb) levels (HR= 2.39; 95% CI 1.24-4.60, p = 0.009) and IMDC (International Metastatic Renal Cell Carcinoma Database Consortium) group (HR = 1.72, 95% CI 1.04-2.87, p = 0.037) were associated with PFS while ECOG-PS (HR = 2.33; 95%CI, 1.16-4.69, p = 0.018) and Hb levels (HR = 3.12; 95%CI 1.18-8.26, p = 0.023) correlated with OS at multivariate analysis, while in the third-line setting, only Hb levels (HR = 2.72; 95%CI 1.04-7.09, p = 0.042) were associated with OS. Results are limited by the retrospective nature of the study.This real-world study provides evidence on the presence of prognostic factors in RCC patients receiving cabozantinib.
Cancers. 2019 Dec 30*** epublish ***
Matteo Santoni, Daniel Y Heng, Sergio Bracarda, Giuseppe Procopio, Michele Milella, Camillo Porta, Marc R Matrana, Giacomo Cartenì, Simon J Crabb, Ugo De Giorgi, Umberto Basso, Cristina Masini, Fabio Calabrò, Maria Giuseppa Vitale, Daniele Santini, Francesco Massari, Luca Galli, Giuseppe Fornarini, Riccardo Ricotta, Sebastiano Buti, Paolo Zucali, Orazio Caffo, Franco Morelli, Francesco Carrozza, Angelo Martignetti, Alain Gelibter, Roberto Iacovelli, Alessandra Mosca, Francesco Atzori, Nuno Vau, Lorena Incorvaia, Cinzia Ortega, Marina Scarpelli, Antonio Lopez-Beltran, Liang Cheng, Vittorio Paolucci, Jeffrey Graham, Erin Pierce, Sarah Scagliarini, Pierangela Sepe, Elena Verzoni, Sara Merler, Mimma Rizzo, Giulia Sorgentoni, Alessandro Conti, Francesco Piva, Alessia Cimadamore, Rodolfo Montironi, Nicola Battelli
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