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  • Title: Weekly topotecan for recurrent endometrial cancer: a case series and review of the literature.
    Author: Traina TA, Sabbatini P, Aghajanian C, Dupont J.
    Journal: Gynecol Oncol; 2004 Oct; 95(1):235-41. PubMed ID: 15385138.
    Abstract:
    OBJECTIVE: Topotecan, a topoisomerase 1 inhibitor, has demonstrated antitumor activity in ovarian and endometrial cancers when administered daily for 5 days every 3 weeks. Recently, topotecan has been studied on a weekly dosing schedule for the treatment of ovarian cancer and found to have efficacy with reduced toxicity. The aim of this study is to review the Memorial Sloan-Kettering Cancer Center (MSKCC) experience with weekly topotecan dosing in women with recurrent endometrial cancer. We have included a review of the literature of weekly topotecan in the treatment of patients with gynecologic cancer. METHODS: After Institutional Review Board (IRB) approval, we identified all women with recurrent endometrial cancer treated with topotecan at MSKCC from May 1996 to February 2004. Patients treated on a weekly schedule were assessed for toxicity and response. A review of the literature pertaining to weekly topotecan in the treatment of endometrial cancer was also performed. RESULTS: Eleven patients were treated with weekly topotecan during the study period, with doses ranging from 2.5-4.0 mg/m(2) on a 2- or 3-week schedule with 1 week off. The median age of the patients was 60 years old (range, 47-76 years), and the median Karnofsky performance status was 80%. Six of the 11 patients were previously treated with more than three chemotherapy regimens and eight had received prior pelvic radiation. Ninety-seven percent of treatment doses were delivered as scheduled, and only two patients required dose reductions. One patient achieved a prolonged partial response for 54 weeks, and two patients had stabilization of disease for 15 weeks each. CONCLUSIONS: Weekly topotecan has antitumor activity and is well tolerated in patients with recurrent endometrial cancer, including those patients with multiple prior treatments. Topotecan on a weekly bolus schedule should be evaluated in prospective trials to better establish its role in the treatment of recurrent endometrial cancer.
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