Rayan Kabirian

TEDOVA: vaccine OSE2101 +/- pembrolizumab as maintenance in platinum-sensitive recurrent ovarian cancer

Ovarian cancer is a leading cause of death from gynecological cancers worldwide. Platinum-based chemotherapy provides the cornerstone of the medical management. In first line and subsequent relapses, maintenance strategies are offered to prolong intervals between lines of chemotherapy. Current maintenance options involve bevacizumab and poly ADP-ribose polymerase inhibitors, but these lines of therapy can only be used once in the disease course. Patients in first or second platinum sensitive relapse after poly ADP-ribose polymerase inhibitors and bevacizumab represent an area of unmet medical need. This academic sponsored, international Phase II randomized trial is evaluating the combination of a therapeutic cancer vaccine (OSE2101) with anti-PD1 (pembrolizumab) as maintenance therapy, in patients with platinum-sensitive recurrence regardless of number of prior lines and no progression after platinum-based chemotherapy.

OSE2101 Alone or in Combination With Pembrolizumab vs BSC in Patient With Platinum-sensitive Recurrent OC

The proposed study is an international randomized phase II, multicenter, open-label, three arms trial to assess best supportive care (BSC) vs OSE2101 and vs OSE2101 + pembrolizumab as maintenance treatment for patients with platinum sensitive relapsed ovarian cancers, previously treated with chemotherapy (regardless of the number of prior lines of platinum-based chemotherapy), bevacizumab (if eligible) and a PARP inhibitor (if eligible). Patients in Complete Response, Partial Response, or Stable Disease at the end of chemotherapy with at least 4 cycles of platinum based chemotherapy will be randomized in one of the three arms (randomization 1:1:2). They will receive one or the two study treatments or BSC until progression, or intolerance, or up to 2 years (from 1st study treatment dose).