Leucovorin and Fluorouracil With or Without SU5416 in Treating Patients With Metastatic Colorectal Cancer

DISEASE CHARACTERISTICS: Histologically confirmed, newly diagnosed or recurrent, metastatic colorectal cancer Primary disease was adenocarcinoma of the colon or rectum Bidimensionally measurable or evaluable disease No CNS metastases

PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-1 Life expectancy: At least 12 weeks Hematopoietic: Absolute neutrophil count at least 1,500/mm3 Platelet count at least 75,000/mm3 Hemoglobin at least 8 g/dL Hepatic: Bilirubin no greater than 2.2 mg/dL AST no greater than 5 times upper limit of normal Renal: Creatinine no greater than 2.0 mg/dL Creatinine clearance at least 50 mL/min Other: Not pregnant Negative pregnancy test Fertile patients must use effective contraception No known allergy to Cremophor or Cremophor based drug products No uncontrolled colon or small bowel disorders No other malignancy within the past 5 years, except: Basal cell skin cancer Carcinoma in situ of the cervix No other acute or chronic medical or psychiatric condition, or laboratory abnormality that would preclude compliance

PRIOR CONCURRENT THERAPY: Biologic therapy: No prior immunotherapy, vaccine therapy, cytokine therapy, or biologic therapy for metastatic disease No prior angiogenesis inhibition therapy (e.g., metalloproteinase inhibitors, thalidomide, anti-VEGF/Flk-1 monoclonal antibody therapy or other experimental drugs acting directly on the VEGF/Flk-1 signaling pathway) Prior antibody therapy, immunotherapy, gene therapy, vaccine therapy, cytokine therapy, or radioimmunotherapy allowed in adjuvant setting only Concurrent epoetin alfa, filgrastim (G-CSF), or sargramostim (GM-CSF) allowed for anemia, neutropenia, or thrombocytopenia No concurrent immunotherapy Chemotherapy: No prior systemic chemotherapy for metastatic disease No prior intra-arterial cytotoxic chemotherapy No more than one prior course of fluorouracil based adjuvant therapy (e.g., intravenous fluorouracil or capecitabine) with the last dose administered at least 6 months ago No prior SU5416 No other concurrent chemotherapy Endocrine therapy: Not specified Radiotherapy: At least 2 weeks since prior radiotherapy Concurrent localized palliative radiotherapy allowed unless indicative of disease progression Surgery: At least 4 weeks since prior major surgery (not including surgical placement of a venous access device) Prior surgical resection of hepatic metastases allowed Other: No prior investigational therapy for metastatic disease No other concurrent investigational agents