- Ovarian cancer, primary peritoneal, and fallopian tube participants in the Phase 1 and Phase 1-T portions of this trial must have either measurable cancer by RECIST 1.1 criteria or an elevated cancer antigen (CA)125 level at least twice the upper limit of normal on two separate occasions at least 1 day but not more than 3 months apart; at least one of the samples should be within 1 week of starting treatment; patients with both an elevated CA125 and measurable cancer will be followed by RECIST 1.1 criteria; patients with only an elevated CA125 level will be followed by modified Gynecologic Cancer Intergroup (GCIG) criteria