A Study of Bevacizumab (Avastin) in Neoadjuvant Therapy in Participants With International Federation of Gynecology and Obstetrics (FIGO) Stage IIIC/IV Ovarian, Tubal, or Peritoneal Cancer, Initially Unresectable

This randomized, open-label study will evaluate the efficacy and safety of neoadjuvant bevacizumab in participants with initially unresectable, FIGO stage IIIC/IV ovarian, tubal, or peritoneal cancer. Participants will be randomized to receive 8 cycles of carboplatin plus paclitaxel with or without bevacizumab before surgery (interval debulking surgery \[IDS\]). Surgery will be scheduled 28 days after the last course of neoadjuvant treatment in participants with resectable cancer. Participants with unresectable cancer will go through the follow-up period. All participants will receive bevacizumab for Cycles 6 to 26.