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  • Title: Adjuvant ifosfamide and cisplatin in patients with completely resected stage I or II carcinosarcomas (mixed mesodermal tumors) of the uterus: a Gynecologic Oncology Group study.
    Author: Sutton G, Kauderer J, Carson LF, Lentz SS, Whitney CW, Gallion H, Gynecologic Oncology Group.
    Journal: Gynecol Oncol; 2005 Mar; 96(3):630-4. PubMed ID: 15721404.
    Abstract:
    OBJECTIVES: To determine progression-free survival (PFS) and overall survival (OS) in women with completely resected stage I or II carcinosarcoma of the uterus treated with adjuvant ifosfamide and cisplatin, and to assess the toxicity of this regimen. METHODS: Eligible patients had histologically confirmed carcinosarcoma (mixed mesodermal tumor) and no postoperative radiotherapy following complete resection for clinical stage I or II disease. They were to have adequate renal, hepatic, and hematologic functions and performance status of 2 or less. Study entry was to be within 8 weeks of hysterectomy. Patients with previous chemotherapy, or other noncutaneous malignancies, were ineligible. Ifosfamide was administered 1.5 g/m2 intravenously (IV) over 1 h and cisplatin was given 20 mg/m(2) over 15 min followed by mesna 120 mg/m2 IV bolus, then 1.5 g/m2/24 h as a continuous infusion. Initial doses (daily x 5 every 21 days x 3 cycles) were reduced by 20% (to 4 days) for myelotoxicity. RESULTS: Nine of seventy-six patients enrolled were deemed ineligible and another two who did not receive protocol treatment were inevaluable. Of the 65 evaluable patients, median age was 65 years; 50 patients (77%) were stage I and 15 (23%) were stage II. PFS and OS, respectively, were 69% and 82% at 24 months, and 54% and 52% at 84 months. Overall 5-year survival was 62%. Leukopenia was the most commonly reported, but manageable, toxicity. CONCLUSION: Adjuvant ifosfamide and cisplatin after primary surgery for stage I or II carcinosarcoma of the uterus is tolerable. In the absence of concurrent controls, the impact on PFS and OS is unclear. Pelvic relapse remains problematic.
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