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Recurrent Epithelial Ovarian Carcinoma: A Randomized Phase III Study Of Pegylated Liposomal Doxorubicin Versus Topotecan

Alan N. Gordon, John T. Fleagle, David Guthrie, David E. Parkin, Martin E. Gore, Angel J. Lacave

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PURPOSE: To compare the efficacy and safety of pegylated liposomal doxorubicin (PLD) and topotecan in patients with epithelial ovarian carcinoma that recurred after or didn’t respond to first-line, platinum-based chemotherapy. PATIENTS AND METHODS: Patients with measurable and assessable disease were randomized to receive either PLD 50 mg/m2 as a 1-hour infusion every 4 weeks or topotecan 1.5 mg/m2/d for 5 consecutive days every 3 weeks. Patients were stratified prospectively for platinum sensitivity and for the presence or absence of bulky disease. RESULTS: A total of 474 patients were treated (239 PLD and 235 topotecan). They comprised the intent-to-treat population. The overall progression-free survival rates were similar between the two arms (P = .095). The overall response rates for PLD and topotecan were 19.7% and 17.0%, respectively (P = .390). Median overall survival times were 60 weeks for PLD and 56.7 weeks for topotecan. Data analyzed in platinum-sensitive patients demonstrated a statistically significant benefit from PLD for progression-free survival (P = .037), with medians of 28.9 for PLD versus 23.3 weeks for topotecan. For overall survival, PLD was significantly superior to topotecan (P = .008), with a median of 108 weeks versus 71.1 weeks. The platinum-refractory subgroup demonstrated a nonstatistically significant survival trend in favor of topotecan (P = .455). Severe hematologic toxicity was more common with topotecan and was more likely to be associated with dosage modification, or growth factor or blood product utilization. CONCLUSION: The comparable efficacy, favorable safety profile, and convenient dosing support the role of PLD as a valuable treatment option in this patient population.