NCT07213804 A Two-Part Phase 3 Study of Sofetabart Mipitecan (LY4170156) in Participants With Platinum-Resistant (Part A) and Platinum-Sensitive (Part B) Ovarian Cancer

Trial Parameters

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Brief Summary

This is a clinical study that has two parts. It is testing a potential new medicine called Sofetabart Mipitecan (LY4170156) for people with certain types of ovarian, peritoneal, and fallopian tube cancers. Part A looks at participants whose cancer no longer responds to platinum-based treatments (a type of chemotherapy). Part B looks at participants whose cancer still responds to platinum-based treatments. The researchers want to find out if Sofetabart Mipitecan works better than the usual treatments that doctors use now and to better understand how safe it is. Each participant's time in the study will depend on how they respond to the treatment.

Eligibility Criteria

Inclusion Criteria: Part A and B: * Have histologically confirmed high-grade serous or high-grade endometrioid ovarian, primary peritoneal, or fallopian tube cancer. * Have confirmed availability of tumor tissue block or slides * Have radiographic progression on or after most recent line of systemic anticancer therapy * Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0-1. * Have measurable disease per RECIST v1.1 Part A: * Have platinum-resistant disease, defined as radiographic progression less than or equal to (≤)6 months of the last administration of platinum therapy. * Have previously received greater than or equal to (≥)1 but ≤3 prior lines of systemic cytotoxic therapy. Up to 4 lines of prior therapy is allowed if one of those lines is mirvetuximab soravtansine. * Have received prior bevacizumab treatment, unless documented contraindication or intolerance. * Have received treatment with a poly(ADP-ribose) polymerase inhibitor (PARPi) if known to have a som

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