A Study of Mirvetuximab Soravtansine vs. Investigator's Choice (IC) of Chemotherapy in Platinum-Resistant, Advanced High-Grade Epithelial Ovarian, Primary Peritoneal, or Fallopian Tube Cancers With High Folate Receptor-Alpha (FRα) Expression

This Phase 3 study is designed to compare the efficacy and safety of mirvetuximab soravtansine (MIRV) vs. IC chemotherapy in participants with platinum-resistant high-grade epithelial ovarian cancer, primary peritoneal, or fallopian tube cancer, whose tumors express a high-level of FRα. Participants will be, in the opinion of the Investigator, appropriate for single-agent therapy for their next line of therapy. The FRα positivity will be defined by the Ventana FOLR1 (FOLR1-2.1) CDx assay.