This is a Phase 1/2 study of PRO1184, a folate receptor alpha (FRα) targeted antibody-drug conjugate, to evaluate the safety, tolerability, PK, and antitumor activity of PRO1184 in patients with selected locally advanced and/or metastatic solid tumors, including epithelial ovarian cancer, endometrial cancer, breast cancer, non-small cell lung cancer, and mesothelioma. This study consists of 2 parts, Part A: Dose Escalation and Part B: Dose Expansion.
Part A may evaluate up to 7 dose levels of PRO1184 on Day 1 of a 21 day cycle by IV infusion.
Part B will be initiated at a dose level based on a comprehensive analysis of safety, tolerability, clinical PK, PD and activity data from Part A in up to 4 different cohorts of up to 20 patients per cohort.
Patients will continue to receive study treatment until the first instance of disease progression, unacceptable toxicity, investigator decision, consent withdrawal, study termination by the Sponsor, pregnancy, or death.
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