Phase II trial of mitomycin-C in squamous cell carcinoma of the uterine cervix: a Gynecologic Oncology Group study.

Fifty-six patients with advanced, persistent, or recurrent squamous cell carcinoma of the cervix not previously exposed to cytotoxic drugs, other than as radiosensitizers, were entered into a study of single-agent 20 mg/m2 mitomycin-C every 6 weeks. The overall response rate among the 52 patients evaluable for response was 12% (three complete and three partial responses). Median response duration was 7.3 months. For the entire population, median progression-free interval was 3.0 months, and median survival was 4.9 months. Among 27 patients with pelvic disease only in previously radiated fields, two responses were observed (7%), whereas four responses were observed among 25 patients with extrapelvic disease in nonradiated fields (16%). The most frequent and severe adverse effects were the result of myelosuppression. Based on the modest level of activity observed, no further study of mitomycin-C in squamous cell carcinoma of the cervix is planned.