Rina-S & BevacizumabStudy to Assess the Efficacy and Safety of Rina-S With or Without Bevacizumab Compared to Investigator's Choice of Platinum-based Chemotherapy With or Without Bevacizumab as Second-line Treatment in Participants With Recurrent Platinum-sensitive Ovarian Cancer

This Phase 3 study will be conducted in different countries around the world with up to about 688 participants.

The purpose of this study is to evaluate how well Rina-S works against ovarian cancer in combination with or without bevacizumab and how it compares to an investigator's choice of platinum-based chemotherapy with or without bevacizumab.

Participants will receive either:

• Rina-S monotherapy (by itself),
• Rina-S plus bevacizumab,
• investigator's choice chemotherapy (by itself) (standard of care), or
• investigator's choice chemotherapy plus bevacizumab (standard of care).

No participants will be given placebo. Participants will participate in 1 of 2 arms.

The treatment duration will be different for every participant. If a participant's cancer stays the same or gets better, and there are not any serious problems, participants can keep getting study treatment for as long as the study is open.

Participants will be asked to attend 1 to 3 visits at the study clinic for each cycle (duration of cycle is 3 or 4 weeks, depending on medication received). During visits, there will be various tests (such as blood draws) and procedures (such as recording of heart activity and imaging) to monitor whether the study treatment is safe and effective.

The overall study duration (including screening, treatment, and follow-up) will be different for every participant.