This is an open-label (all people know the identity of the intervention), randomized (the study medication is assigned by chance), comparative bridging study (a supplemental study which performs to provide data of effectiveness, safety, and dosage to compare two study medications in a new region). The study consists of 3 phases: screening phase (30 days before administration of study medication), treatment phase, and follow up phase (every 8 weeks for tumor assessment until disease progression or death, or until the study completion, whichever is earlier and every 3 months after disease progression for overall survival and for anti-tumor therapy for a minimum of 1 year). In the treatment phase, approximately 120 eligible participants will be categorized prospectively for platinum-sensitivity (sensitive versus refractory) and bulky disease (presence versus absence). Later on participants will be randomly assigned either to experimental arm (CAELYX: administer on Day 1 of each cycle) or control arm (topotecan HCl: administer on Day 1 to Day 5 of each cycle). Treatment will continue until disease progression occurs and may continue for at least 2 cycles after confirmed complete response (disappearance of all target lesions). On average, it is expected that participants will continue treatment for approximately 3 to 6 cycles in experimental arm (CAELYX) or 4 to 8 cycles in Control arm (topotecan HCl). Safety evaluations will include assessment of adverse events, clinical laboratory tests, electrocardiogram, echocardiogram (or multiple gated acquisition scans), vital signs, and physical examination which will be monitored throughout the study. The total duration of the study will be approximately 23 months.
