Study to Compare Tivozanib in Combination With Nivolumab to Tivozanib Monotherapy in Subjects With Renal Cell Carcinoma

This will be an open-label, randomized, controlled, multicenter, multi-national, parallel-arm study. The study is designed to compare the progression free survival (PFS), overall survival (OS), Objective response rate (ORR), duration of response (DoR), and safety of tivozanib and the combination of tivozanib with nivolumab. Approximately 326 subjects with refractory advanced RCC at approximately 190 sites will be randomized in a 1:1 ratio to treatment with tivozanib plus nivolumab (163 subjects) or tivozanib (163 subjects). Subjects will be randomly assigned to a treatment. Subjects will receive 1.34 mg/day (monotherapy arm) or 0.89mg/day (combination arm) of tivozanib once daily (QD) for 3 weeks followed by 1 week off study drug. One cycle will be defined as 4 weeks: 3 weeks on treatment and 1 week off treatment. Subjects who receive nivolumab will be infused with 1 treatment of nivolumab at specified dose on specified days of each Cycle. Subjects with documented stable disease or an objective response may continue to receive both tivozanib and nivolumab therapy at the same dose and schedule until progression as long as the tolerability is acceptable. Nivolumab will be discontinued in all subjects after 2 years; Tivozanib may be continued after discontinuation of nivolumab until other withdrawal criteria are met. A Safety Follow-up Visit will be performed 30 days (± 7 days) after the last dose of study drug.