Kaplan-Meier estimates of overall survival (OS) in the intent-to-treat population. * Two-sided p value from log-rank test stratified by University of California, Los Angeles integrated staging system high-risk group: T3 or T4, no or undetermined nodal involvement, no metastasis, or any T stage with local nodal involvement, and for all patients, any Fuhrman grade and any Eastern Cooperative Oncology Group performance status. CI = confidence interval; ECOG PS =; HR = hazard ratio; NR = not reached.