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Dactinomycin in the treatment of recurrent or persistent endometrial carcinoma: A Phase II study of the Gynecologic Oncology Group
Authors:Moore D H  Blessing J A  Dunton C  Buller R E  Reid G C
Affiliation:Department of Obstetrics and Gynecology, Indiana University Medical Center, Indianapolis, Indiana 46202, USA.
Abstract:
OBJECTIVES: The search for effective systemic chemotherapy for endometrial cancer is ongoing. Complete responses to current drugs or regimens are infrequent, and overall survival for patients with disease not amenable to surgery or radiation therapy is poor. Dactinomycin has proven activity against a wide variety of solid tumors but has not been tested against endometrial cancer. Using pharmacokinetic data supporting an intermittent, single-dose schedule, this Phase II Gynecologic Oncology Group study was conducted to determine the antitumor activity and toxicity of dactinomycin in patients with persistent or recurrent endometrial adenocarcinoma. METHODS: Eligibility was limited to patients with measurable disease, adequate renal, hepatic, and bone marrow function, and no more than one prior chemotherapy regimen. Treatment consisted of 2 mg/m(2) slow intravenous push of dactinomycin over 15 min with courses repeated every 4 weeks. RESULTS: A total of 27 patients were entered in this study between April 1996 and September 1996; all were evaluable for toxicity and 25 were evaluable for response. Overall, 12/25 (48%) patients had received prior radiation therapy and all had received prior chemotherapy. Sites of measurable disease were pelvis (9 patients) and distant (16 patients). There was 1 complete response and 2 partial responses for an overall objective response rate of 12%. Aside from emesis (grade 3, 2 patients; grade 4, 2 patients) significant nonhematologic toxicity was rare. The most common toxicity was neutropenia (grade 3, 2 patients; grade 4, 10 patients). CONCLUSION: Toxicity was deemed acceptable but the limited effectiveness of dactinomycin precludes further clinical development in this patient population.
Keywords:endometrial cancer   dactinomycin   actinomycin-D   chemotherapy
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