EXTON, Pa.--(BUSINESS WIRE)--Morphotek®, Inc., a subsidiary of Eisai Corporation of North America, today announced that it has commenced a multi-centered Phase II study of farletuzumab (also known as MORAb-003). The study will evaluate farletuzumab, plus the chemotherapy drug paclitaxel, in patients with platinum-resistant (PR) ovarian cancer. The randomized, controlled trial will compare farletuzumab plus paclitaxel with a placebo plus paclitaxel.