Ninety-six-hour infusional paclitaxel as salvage therapy of ovarian cancer patients previously failing treatment with 3-hour or 24-hour paclitaxel infusion regimens.

Purpose: To test the hypothesis that prolonged infusion of paclitaxel (96 hours) might overcome resistance to shorter infusion schedules (3 or 24 hours) in ovarian cancer.
Patients and Methods: A total of 30 patients with advanced ovarian cancer (24 patients), primary carcinoma of the peritoneum (four patients), or fallopian tube cancer (two patients) who previously had received paclitaxel administered on either a 3-hour or 24-hour schedule were treated with the agent delivered as a 96-hour infusion (30 to 35 mg/m2/d x 4 days) on an every 3-week program.
Results: Although the regimen generally was well tolerated, no objective responses were observed.
Conclusion: In patients with ovarian cancer who have shown resistance to shorter paclitaxel infusion schedules, ninety-six hour infusional paclitaxel is an inactive treatment strategy. This makes it less likely that protracted infusion of paclitaxel will improve outcome when used as part of primary therapy of ovarian cancer. An ongoing randomized study will answer that question.