CPT-11 in Combination With Weekly 24 Hour Infusion 5-FU Plus Folinic Acid Relative to Weekly 24 Hour Infusion 5-FU Plus Folinic Acid Alone in Patients With Advanced Colorectal Cancer

Study start date: July 1, 1999

DISEASE CHARACTERISTICS: Histologically proven metastatic adenocarcinoma of the colon or rectum Measurable or evaluable disease outside of any prior radiation port No CNS metastases PATIENT CHARACTERISTICS: Age: 18 and over Performance status: WHO 0-2 Life expectancy: Not specified Hematopoietic: WBC at least 3,000/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 1.25 times upper limit of normal (ULN) (1.5 times ULN if liver metastasis present) AST and ALT no greater than 3 times ULN (5 times ULN if liver metastasis present) Renal: Creatinine no greater than 1.25 times ULN Cardiovascular: No severe cardiac disease No uncontrolled angina pectoris No myocardial infarction within the past 6 months Gastrointestinal: No unresolved bowel obstruction or subobstruction No uncontrolled Crohn's disease or ulcerative colitis No history of chronic diarrhea Other: No second malignancy except carcinoma in situ of the cervix or nonmelanomatous skin cancer No other uncontrolled severe medical condition Not pregnant or nursing Fertile patients must use effective contraception PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No prior chemotherapy for metastatic disease No prior adjuvant chemotherapy containing topoisomerase I inhibitors At least 6 months since other prior adjuvant chemotherapy Endocrine therapy: Concurrent corticosteroids allowed Radiotherapy: See Disease Characteristics Surgery: Not specified Other: At least 4 weeks since other prior investigational drugs No other concurrent anticancer therapy