- For stage 1 (all patients) and dose expansion (stage 2) endometrial and ovarian cancer cohorts, participants are allowed following unlimited prior therapy; for stage 2 GBM participants, no more than 2 prior relapses are allowed; for these patients, relapse is defined as progression following initial therapy (i.e. radiation +/- chemo if that was used as initial therapy) or a subsequent therapy; the intent therefore is that GBM patients enrolling onto stage 2 had no more than 3 prior therapies (initial and treatment for 2 relapses); if the patient had a surgical resection for relapsed disease and no anti-cancer therapy was instituted for up to 12 weeks, and the patient undergoes another surgical resection, this is considered to constitute 1 relapse