Abstract
To assess whether six courses of paclitaxel are effective as consolidation treatment in patients with advanced epithelial ovarian cancer who are in complete response after first-line paclitaxel/platinum-based chemotherapy. Patients with stages IIb to IV disease in clinical or pathologic complete response after six courses of paclitaxel/platinum-based chemotherapy were randomly allocated to either observation (ie, control) or six courses of paclitaxel 175 mg/m(2) every 3 weeks (ie, maintenance). Two hundred patients were randomly assigned from March 1999 to July 2006. Because of the low accrual rate, an unplanned interim analysis of futility according to the Bayesian approach was performed. Grade 2 or greater motor neurotoxicity and sensory neurotoxicity were reported in 11.3% and 28.0% of the paclitaxel-arm patients, respectively. After a median follow-up of 43.5 months, 107 patients (53%) had experienced relapse, and 48 patients (24%) had died. Two-year progression-free survival rates were 54% (95% CI, 43% to 64%) and 59% (95% CI, 49% to 69%; P = not significant) in the control and maintenance arms, respectively. Corresponding 2-year overall survival rates were 90% (95% CI, 84% to 97%) and 87% (95% CI, 80% to 94%; P = not significant), respectively. The Cox model showed that residual disease after initial surgery (macroscopic v no macroscopic residuum; hazard ratio [HR], 1.91; 95%CI, 1.21 to 3.03) and stage (IIIc to IV v others; HR, 3.10; 95% CI, 1.13 to 8.48) were independent prognostic factors for progression-free survival, whereas the treatment arm (maintenance v control) had no prognostic relevance. A consolidation treatment with six cycles of paclitaxel does not prolong progression-free survival or overall survival in patients in complete response after first-line paclitaxel/platinum-based regimens.
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