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Title: A phase I trial of a 3-day topotecan Q 21 days for recurrent epithelial cancers of the ovary, fallopian tube, and peritoneum. Author: Brown JV, Peters WA, Rettenmaier MA, Karlan BY, Dillman RA, Smith MR, Drescher CW, Micha JP. Journal: Gynecol Oncol; 2000 Dec; 79(3):495-8. PubMed ID: 11104627. Abstract: OBJECTIVE: This trial was undertaken to determine the dose limiting toxicity (DLT) and maximum tolerated dose (MTD) of topotecan that can be administered for 3 days q 21 days. A 3-day schedule is more convenient and less expensive than standard 5-day dosing. METHODS: Patients with recurrent epithelial ovary, tubal, or peritoneal carcinoma were treated with escalating doses of topotecan beginning at 2.50 mg/m(2) as an outpatient days 1-3 q 21 days. Colony stimulating factors were not employed prophylactically, but could be added for grade 4 marrow toxicity. RESULTS: Twenty patients with a median age of 61 (range 46-80) and performance status of 0 or 1 were entered. All patients had received at least one prior paclitaxel/platinum regimen; 6 had received two. Ninety-one cycles were delivered (median = 6) and 98.9% were on schedule. Grade 4 neutropenia was seen in 17 of 20 patients (85%) in cycle 1 and in 38 of 91 (41.8%) total cycles. Sixteen of 20 patients (80%) started G-CSF on cycle 2. Two of 91 (2.2%) cycles had grade 4 thrombocytopenia. Four cycles (4.4%) were associated with febrile neutropenia. Two patients experienced grade 4 neurotoxicity (DLT) at 4.25 mg/m(2). Other nonhematologic toxicity was mild. CONCLUSIONS: Topotecan can be safely administered on schedule as an outpatient days 1-3 q 21 days. Neurotoxicity was the DLT when G-CSF was added; the MTD was 3.75 mg/m(2). There was minimal other nonhematologic toxicity. Neutropenia was predictable and easily managed with G-CSF. Febrile neutropenia was uncommon and thrombocytopenia was rare at the doses evaluated.[Abstract] [Full Text] [Related] [New Search]