The purpose of this Chinese extension study is to compare how well Rina-S works against platinum-resistant ovarian cancer compared to chemotherapy drugs that are already approved and used for platinum-resistant ovarian cancer.
Treatment in this study could be Rina-S or it could be 1 of 4 indicated chemotherapy agents that are considered standard medical care. There is an equal (50:50) chance of getting Rina-S or an approved chemotherapy agent as treatment in this study. No one will know what treatment they are assigned to until the first dose.
All participants will receive active drug; no one will be given placebo.
This study is an extension study of the protocol GCT1184-02 (NCT06619236).
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.
Platinum chemotherapy
Prior therapy with an antibody-drug conjugate containing a topoisomerase 1 inhibitor.
Have primary platinum-refractory disease, defined as ovarian cancer that did not respond (CR or PR) to or progressed ≤ 91 days after the last dose of a first-line platinum-containing regimen.
History of another malignancy within 3 years before the first dose of study drug, or any evidence of residual disease from a previously diagnosed malignancy. Exceptions are malignancies with a negligible risk of metastasis or death (e.g., 5-year OS ≥90%), including, but not limited to, adequately treated carcinoma in situ of the cervix, non-melanoma skin carcinoma, ductal carcinoma in situ, or Stage I uterine cancer.
Known active central nervous system metastases or carcinomatous meningitis. Participants with previously treated brain metastases may participate provided they are clinically stable for at least 4 weeks prior to study entry after brain metastasis treatment, they have no new or enlarging brain metastases, and are off corticosteroids and anticonvulsants prescribed for symptoms associated with brain metastases for at least 7 days prior to the first dose of study drug. Participants with suspected brain metastases at screening should undergo a computed tomography (CT)/magnetic resonance imaging (MRI) of the brain prior to study entry.