A phase II evaluation of flavopiridol as second-line chemotherapy of endometrial carcinoma: a Gynecologic Oncology Group study

Abstract

Objective: A phase II study was conducted to determine the efficacy of single agent flavopiridol therapy in patients with recurrent or persistent endometrial adenocarcinoma refractory to established treatments.

Methods: Eligible patients with measurable disease who failed primary therapy including one cytotoxic regimen were eligible for the trial. They were treated with single agent flavopiridol (50 mg/m(2)/day, IV bolus days 1, 2, 3). Treatment was repeated every 21 days with dose adjustments made for toxicity. Patients were treated until progression of disease or adverse side effects precluded further therapy.

Results: A total of 26 patients were enrolled in the study of whom, 23 patients were eligible. There were no objective responses. Five patients had stable disease (22%), 15 (65%) had increasing disease, and response could not be assessed in 3 (13%). The most frequent side effects included anemia, neutropenia, and diarrhea, all of which appeared manageable.

Conclusion: Flavopiridol as a single agent in the above dosing schedule appears to have minimal activity as second-line chemotherapy of endometrial adenocarcinoma.