- Measurable or evaluable disease as defined by RECIST Version 1.1 in Part 1 of the study (patients included in Part 2 will be required to have measurable disease). The measurable lesion in HCC patients should not be one that has been previously treated by loco-regional therapies (e.g. TACE, RFA) unless this lesion has progressed and there is evidence of new, measurable, enhancement on dynamic imaging.