Phase III randomized trial of doxorubicin + cisplatin versus doxorubicin + 24-h paclitaxel + filgrastim in endometrial carcinoma: a Gynecologic Oncology Group study

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BackgroundThis study was performed to determine whether 24-h paclitaxel plus doxorubicin and filgrastim was superior to cisplatin plus doxorubicin in patients with endometrial cancer with respect to response, progression-free survival (PFS) and overall survival (OS).Patients and methodsEligible chemotherapy-naïve patients were randomly assigned to doxorubicin 60 mg/m2 intravenously (i.v.) followed by cisplatin 50 mg/m2 i.v. (arm 1, n=157) or doxorubicin 50 mg/m2 i.v. followed 4 h later by paclitaxel 150 mg/m2 i.v. over 24 h plus filgrastim 5 μg/kg on days 3–12 (arm 2, n=160). Starting doses were reduced for prior pelvic radiotherapy and age >65 years. Both regimens were to be repeated every 3 weeks for a maximum of seven cycles.ResultsThere was no significant difference in response rate (40% versus 43%), PFS (median 7.2 versus 6 months) or OS (median 12.6 versus 13.6 months) for arm 1 and arm 2, respectively. Toxicities were primarily hematological, with 54% (arm 1) and 50% (arm 2) of patients experiencing grade 4 granulocytopenia. Gastrointestinal toxicities were similar in both arms.ConclusionsDoxorubicin and 24-h paclitaxel plus filgrastim was not superior to doxorubicin and cisplatin in terms of response, PFS or survival in advanced endometrial cancer.

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