A Phase II Trila of Sunitinib Schedule 4/2 vs. Shedule 2/1 as First Line Therapy in Metastatic Renal Cell Carcinoma.

Sunitinib given at 50 mg/day on schedule 4/2 (4 weeks on treatment, 2 weeks off) is the standard care for first-line treatment of metastatic renal cell carcinoma, but the schedule was reported with a high rate of dose reduction and dose discontinuation because of the safety profile. So investigators conducte this randomized, multi-center phase II study to determine whether a sunitinib regimen of 50 mg/day 2-weeks on/1-week off could provide the same efficacy in terms of progression-free survival, objective response, and overall survival, while reducing drug-related toxicity.