- Radiotherapy =< 4 weeks prior to registration, except if to a non-target lesion only; prior radiation to a target lesion is permitted only if there has been clear progression of the lesion since radiation was completed; if patient receives single dose radiation for palliation or radiation to non-target lesion, they may immediately proceed to registration without waiting; acute adverse events from radiation must have resolved to =< Common Terminology Criteria for Adverse Events (CTCAE) version (v) 3.0 grade 1