An Extension Study to Assess the Efficacy of Rina-S Compared to Treatment of Investigator's Choice in Participants With Platinum Resistant Ovarian Cancer in China

Key Inclusion Criteria: * Participants must have histologically or cytologically confirmed high grade serous or endometrioid epithelial ovarian cancer, primary peritoneal cancer, or fallopian tube cancer. * Participants may be enrolled regardless of FRα expression level. * Participants must have received 1 to 4 prior lines of therapy. Participants must have progressed radiographically on or after their most recent line of therapy. * Participants must have received prior treatment with the following therapies: * Platinum chemotherapy * Prior bevacizumab (or biosimilar) treatment is required, if labeled and available as standard of care per institutional guidelines, unless the participant has a documented contraindication or unless the participant is not eligible for treatment with bevacizumab (or biosimilar) due to precautions/intolerance * Participants with known or suspected deleterious germline or somatic breast cancer gene (BRCA) mutations and who achieved a complete or partial response to platinum-based chemotherapy must have been treated with a poly ADP-ribose polymerase (PARP) inhibitor as maintenance treatment unless the participant is not eligible for treatment with PARP inhibitor * Mirvetuximab soravtansine, if: * Mirvetuximab soravtansine is available in the enrollment region, and * The participant is eligible, and * The participant does not have a documented medical exception, including chronic corneal disorders, history of corneal transplantation, o…