Cisplatin and irinotecan in squamous cell carcinoma of the cervix: a phase II study of the Gynecologic Oncology Group.
OBJECTIVE
To evaluate the combination of cisplatin and irinotecan as first-line treatment of patients with advanced, persistent, or recurrent squamous cell carcinoma of the cervix.


METHODS
Patients with no prior treatment for metastatic disease, presence of measurable tumors, performance status of 0 or 1, and adequate bone marrow, renal, and hepatic functions were potentially eligible for this trial. Cisplatin and irinotecan were given weekly at starting doses of 25 and 65 mg/m(2), respectively, for three consecutive weeks. Cycles were to be repeated every 28 days with dose adjustments as required. Patient accrual was based on a two-stage design with at least seven responses out of 28 patients in the first stage required to proceed to a second stage of accrual seeking a response rate of 40% or better.


RESULTS
Of 34 patients entered onto the study, 31 were eligible and 27 were evaluable for response. Ten had received prior chemoradiation containing cisplatin. Among the five (two complete and three partial) observed responses, two were in the subset of patients who had received prior chemoradiation. This level of activity was deemed insufficient to warrant a second stage of accrual. Predominant toxicities were myelosuppression and gastrointestinal symptoms, although six patients experienced none of these adverse effects.


CONCLUSIONS
At these doses, weekly cisplatin and irinotecan failed to demonstrate sufficient activity to undertake a phase III study. Although not apparent in this study, prior chemoradiation may affect response to platinum-based combinations and its impact should be considered in the design of future trials.
Muggia
Franco M
FM
Department of Medicine, Kaplan Cancer Center, Division of Medical Oncology, New York University Medical Center, 462 First Avenue, New York, NY 10016, USA. muggif01@gcrc.med.nyu.edu
Blessing
John A
JA
McGehee
Ramon
R
Monk
Bradley J
BJ
D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects / Q000627:therapeutic use*; D002166:Camptothecin / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives*; D002294:Carcinoma, Squamous Cell / Q000188:drug therapy* / Q000473:pathology; D002945:Cisplatin / Q000008:administration & dosage / Q000009:adverse effects; D005260:Female; D006801:Humans; D000077146:Irinotecan; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local / Q000188:drug therapy / Q000473:pathology; D002583:Uterine Cervical Neoplasms / Q000188:drug therapy* / Q000473:pathology
D000077146:Irinotecan; D002945:Cisplatin; D002166:Camptothecin