- Unresectable, relapsed and/or metastatic cancer with minimal or low disease burden. Disease may or may not be measurable and should not be rapidly progressive. Inadequate response, relapse and/or unacceptable toxicity with one or more prior systemic, surgical, or radiation cancer therapies, except patients with NSCLC and breast cancer who must have experienced an inadequate response and/or unacceptable toxicity with two or more prior systemic, surgical, or radiation cancer therapies.