Overview Nexavar® Versus Placebo in Locally Advanced/Metastatic RAI-Refractory Differentiated Thyroid Cancer Status: Completed Trial end date: 2017-08-30 Target enrollment: Participant gender: Summary Trial of sorafenib versus placebo in the treatment of locally advanced or metastatic differentiated thyroid cancer refractory to radioiodine Phase: Phase 3 Details Lead Sponsor: BayerCollaborators: AmgenOnyx PharmaceuticalsTreatments: NiacinamideSorafenib