CA116-001

Neoplasms, ovarian cancer

The purpose of the study is to assess the safety, tolerability, and efficacy of Farletuzumab Ecteribulin (MORAb-202) and compare it to Investigator's Choice (IC) chemotherapy in female participants with platinum-resistant HGS ovarian, primary peritoneal, or fallopian tube cancer.

Inclusion Criteria:

• Female participants with histologically-confirmed diagnosis of HGS ovarian, primary peritoneal, or fallopian tube cancer.
• Platinum-resistant disease, defined as:
  • For participants who had only 1 line of platinum-based therapy: progression between > 1 month and ≤ 6 months after the last dose of platinum-based therapy of at least 4 cycles.
  • For participants who had 2 or 3 lines of platinum-based therapy: progression ≤ 6 months after the last dose of platinum-based therapy.
• Participants have received at least 1 but no more than 3 prior lines of systemic therapy and for whom single-agent therapy is appropriate as the next line of therapy. Participants may have been treated with up to 1 line of therapy subsequent to determination of platinum-resistance.
• Disease progression per RECIST v1.1 (by investigator assessment) of at least 1 measurable lesion on or after the most recent therapy.
• Either formalin-fixed, paraffin-embedded (FFPE) tissue (up to 5 years old) or newly-obtained biopsies must be available for FRα assessment prior to randomization.
• Eastern Cooperative Oncology Group Performance Status (ECOG) of 0 or 1.

Exclusion Criteria:

Medical Conditions

• Clear cell, mucinous, endometrioid or sarcomatous histology, or mixed tumours containing components of any of these histologies, or low grade or borderline ovarian cancer.
• Primary platinum-refractory ovarian cancer defined as disease progression within 1 month of the last dose of the first line platinum-containing regimen.
• Pulmonary function test (PFT) abnormalities: FEV1 < 70% or FVC < 60%, and DLCO < 80%.
• Investigator-assessed current ILD/pneumonitis, or ILD/pneumonitis suspected at screening or history of ILD/pneumonitis of any severity including ILD/pneumonitis from prior anti-cancer therapy.
• Significant third-space fluid retention (eg, ascites or pleural effusion) that requires repeated drainage.

Physical and Laboratory Test Findings

• Evidence of organ dysfunction or any clinically-significant deviation from normal in physical examination, vital signs, ECG, or clinical laboratory determinations beyond what is consistent with the target population.

Allergies and Adverse Drug Reactions

• Has any prior severe hypersensitivity (= Grade 3) to monoclonal antibodies or eribulin or contraindication to the receipt of corticosteroids or any of the excipients
• History of allergy or contraindication to IC chemotherapy agent selected if randomized to Arm C.

Other protocol-defined inclusion/exclusion criteria apply.

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