This randomized, controlled, open-label, multicenter Phase 3 trial compared axitinib with sorafenib as second-line therapy for metastatic renal clear-cell cancer. The results showed that axitinib extended progression-free survival by 2 months more than sorafenib (6.7 months vs 4.7 months), and had a superior objective response rate (19.4% vs 9.4%).