A Phase II Trial of Bryostatin-1 for the Treatment of Stage IV Breast Cancer

Date de début de l'étude : 1 avril 1998

DISEASE CHARACTERISTICS: Unequivocal diagnosis of metastatic breast cancer Bidimensionally measurable disease No uncontrolled CNS metastases No disease that is evaluable only, including blastic bone disease, malignant ascites, and malignant pleural effusion Hormone receptor status: Not specified PATIENT CHARACTERISTICS: Age: 18 and over Menopausal status: Not specified Performance status: SWOG 0-2 OR Karnofsky 60-100% Life expectancy: At least 18 weeks Hematopoietic: Platelet count at least 50,000/mm^3 PT and PTT within normal limits Neutrophil count at least 2,000/mm^3 Hepatic: Bilirubin no greater than 1.2 mg/dL Transaminases no greater than 3 times normal Renal: Creatinine no greater than 1.6 mg/dL OR Creatinine clearance at least 70 mL/min Other: No active infections requiring antibiotics No viral hepatitis allowed Seronegative for hepatitis B or C Not pregnant or nursing Fertile patients must use effective contraception during and for 2 months following study participation PRIOR CONCURRENT THERAPY: Biologic therapy: No concurrent immunotherapy Chemotherapy: 2 prior chemotherapy regimens for metastatic disease allowed as adjuvant therapy or for advanced disease (may include high dose chemotherapy with stem cell support) At least 4 weeks since prior chemotherapy At least 6 weeks since prior nitrosourea or mitomycin therapy No other concurrent chemotherapy Endocrine therapy: 2 prior hormonal therapy regimens for metastatic disease as adjuvant therapy or for advanced diseases allowed At least 2 weeks since prior hormonal therapy (at least 4 weeks in case of disease progression while receiving hormonal therapy after initial response) No concurrent hormonal therapy except oral contraceptives No concurrent use of steroids except for management of severe or life- threatening toxic effects arising from bryostatin 1 Radiotherapy: At least 2 weeks since prior radiotherapy No concurrent radiotherapy Surgery: Not specified Other: No concurrent use of drugs known to interfere with platelet function, such as aspirin or NSAIDs (including ibuprofen) No concurrent use of anticoagulants At least 2 weeks since prior use of aspirin At least 2 days since prior use of NSAIDS Concurrent use of acetaminophen to control pain is allowed If acetaminophen inadequate for pain control, concurrent use of oral narcotics such as codeine or oxycodone is allowed