Patients must have measurable disease based on RECIST 1.1 Have at least one measurable area of disease based on RECIST 1.1 within the previously radiated field Have measurable disease based on RECIST 1.1 Measurable disease based on RECIST 1.1 Has measurable disease based on RECIST 1.1 as assessed by the central imaging vendor. Have measurable disease based on RECIST 1.1 Have at least one measurable disease based on RECIST 1.1 Have measurable disease based on RECIST 1.1 Has measurable disease based on RECIST 1.1 as determined by the local site investigator/radiology assessment. Measurable disease based on RECIST 1.1. Have measurable disease based on RECIST 1.1. (in addition to the lesion/s that will be treated with stereotactic radiation therapy) Have measurable disease based on RECIST 1.1 Have measurable disease based on RECIST 1.1 Have measurable disease based on RECIST 1.1 Measurable disease based on RECIST 1.1. Have measurable disease based on RECIST 1.1 Have measurable disease based on RECIST 1.1 Have measurable disease based on RECIST 1.1 Patient must have measurable disease based on RECIST 1.1 criteria Have measurable disease based on RECIST 1.1 Has measurable disease based on RECIST v1.1 criteria Have measurable disease based on RECIST 1.1 Have measurable disease based on RECIST 1.1 Have measurable disease based on RECIST v.1.1 Have measurable disease based on RECIST 1.1. PHASE II: Patients must have measurable disease based on RECIST 1.1 criteria Patients must have measurable disease based on RECIST 1.1, as determined by the site, to be eligible Patients must have measurable disease based on RECIST 1.1 Measurable disease based on RECIST v1.1. Has measurable disease based on RECIST 1.1 as determined by the local site investigator/radiology assessment. Presence of measurable disease based on RECIST v1.1. Measurable disease based on RECIST 1.1 Has measurable disease based on either modified RECIST [Nowak 2005] for thoracic disease or RECIST 1.1 elsewhere Measurable disease based on RECIST v1.1. Measurable disease based on RECIST v1.1. Measurable disease based on RECIST v1.1. Have measurable disease based on RECIST 1.1 Have measurable disease based on RECIST 1.1 Measurable disease of at least 2 cm and otherwise based on RECIST 1.1, assessed from MRI scans by a central radiologist. Measurable disease based on RECIST 1.1 as determined by central review Have measurable disease based on RECIST 1.1 Have a measurable disease based on RECIST 1.1. Presence of measurable disease based on RECIST v1.1. Have measurable disease based on RECIST 1.1