Regorafenib (Stivarga, BAY73-4506)
DrugPatients will be treated with BAY73-4506 160 mg po qd for 3 weeks of every 4 week cycle (i.e., 3 weeks on, 1 week off). Patients will continue treatment with BAY73-4506 until disease progression, intolerable toxicity, or patient refusal to continue with the study or investigator decision to remove the patient from study.