-  Diagnosis of LGS carcinoma of the ovary, fallopian tube or primary peritoneum<br/>             (invasive micropapillary serous carcinoma or invasive grade 1 serous carcinoma),<br/>             confirmed histologically and verified by central pathology review.<br/><br/>          -  Recurrent or persistent measurable disease that has progressed (defined as<br/>             radiological and/or clinical progression; an increase in cancer antigen [CA]-125<br/>             alone is not sufficient) on or after last therapy (i.e., chemotherapy, hormonal<br/>             therapy, surgery) and is not amenable to potentially curative intent surgery, as<br/>             determined by the patient's treating physician.<br/><br/>          -  Must have received at least 1 prior platinum-based chemotherapy regimen but have<br/>             received no more than 3 lines of prior chemotherapy regimens, with no limit to the<br/>             number of lines of prior hormonal therapy. Front-line therapy may include neoadjuvant<br/>             and adjuvant therapy and will be counted as 1 prior systemic regimen. Biological<br/>             therapy (e.g. bevacizumab) administered as a single agent is considered a prior<br/>             systemic regimen and not a prior chemotherapy regimen. Maintenance therapy is not<br/>             considered its own regimen but should be included with the regimen that it follows.<br/><br/>          -  Available archival tumor sample (excisional or core biopsy) for confirmation of LGS<br/>             carcinoma diagnosis. If adequate archival tumor sample is not available, willingness<br/>             to consent to tissue biopsy.<br/><br/>          -  Suitable for treatment with at least one of the physician's choice chemotherapy<br/>             options (liposomal doxorubicin, paclitaxel or topotecan) as determined by the<br/>             Investigator.<br/><br/>          -  Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1.<br/><br/>          -  Additional criteria exist.<br/><br/>        Key