- Subjects must have progressed based on Response Evaluation Criteria in Solid Tumors (RECIST) criteria after at least one prior systemic therapy (chemotherapy, biologic/immunotherapy, or a combination regimen) for metastatic disease. This includes development of any new lesion or a 20% increase in the sum of the subject's measurable disease compared to their previous nadir. New CNS metastasis could be the reason for disease progression, but they must be stable clinically and satisfy criteria delineated in section 5.4. Prior systemic therapy must have been completed at least 28 days before registration.