<qa>  What is the primary peritoneal cancer?- Patients must have any epithelial ie, serous, endometroid, mucinous, clear cell ovarian, fallopian tube, or primary peritoneal cancer. Patients must have experienced a response lasting at least 6 months to first-line platinum-based therapy but currently considered to have platinum-resistant disease per investigators assessment e.g, patient is not eligible for further platinum containing treatment. Patients may have received up to 5 lines of cytotoxic therapy for advanced or metastatic cancer. Neoadjuvant and adjuvant therapies are not counted towards lines of therapy. 