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OBJECTIVE: To determine the effectiveness and toxicity of ifosfamide chemotherapy in women with metastatic or recurrent endometrial stromal sarcomas unexposed to other chemotherapy. METHODS: In a prospective, multi-institutional phase II study conducted by the Gynecology Oncology Group, the starting dose of ifosfamide was 1.5 g/m2 given daily intravenously (i.v.) for 5 days (reduced to 1.2 g/m2 daily in patients who had previously received radiotherapy). Mesna (2 mercaptoethane sodium sulfonate) was given i.v. immediately and at 4 and 8 hours after the administration of ifosfamide. Each dose of mesna was 20% of the total daily dose of ifosfamide. Patients were treated every 3 weeks if blood counts permitted. Therapy was discontinued if there was progression of the cancer or unacceptable toxicity. RESULTS: Twenty-two patients were entered into this study. One was excluded from analysis because of the wrong histologic type, leaving 21 evaluable for response and toxicity. Gynecologic Oncology Group grade 3 or 4 granulocytopenia occurred in four patients (19%), and one patient each experienced Gynecologic Oncology Group grade 4 anemia and genitourinary toxicity. Three patients experienced complete tumor responses and four had partial responses, for an overall response rate of 33.3%. CONCLUSION: Ifosfamide is active in the therapy of women with chemotherapy-naive metastatic or recurrent endometrial stromal sarcomas.
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S. Ota, K. Shinagawa, H. Ueoka, S. Tada, M. Tabata, S. Hamazaki, E. Kondo, K. Kiura, T. Mannami, T. Shibayama, et al. Spontaneous Regression of Metastatic Endometrial Stromal Sarcoma Jpn. J. Clin. Oncol., February 1, 2002; 32(2): 71 - 74. [Abstract] [Full Text] [PDF] |
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G. C. Blobe, M. Mantel, M. Janicek, and G. D. Demetri Two Patients With Sarcoma J. Clin. Oncol., June 11, 2000; 18(11): 2343 - 2344. [Full Text] [PDF] |
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