Objective: To evaluate the effect of oral treosulfan in patients with platinum-resistant ovarian cancer.
Methods: A phase II trial of oral treosulfan 500 mg per day in 30 females with platinum resistant ovarian cancer. All patients had measurable or evaluable disease.
Results: The treatment was well tolerated. One patient (3%) achieved a partial response lasting 12+ months. Seven patients had stable disease for 5.3 months (median) range 4.4-7.5 months. Median time to progression was 11.5 weeks (95% C.L. 11-12 weeks). Median survival was 31 weeks (95% C.L. 30-35 weeks).
Conclusion: Oral treosulfan in the present schedule is not recommended in platinum resistant ovarian cancer.