Phase II Study of Weekly 1-Hour Paclitaxel (Taxol) Plus Recombinant Humanized Anti-p185HER2 Monoclonal Antibody (Herceptin) in the Treatment of Patients With Metastatic Breast Cancer

Study start date: April 1, 1998

DISEASE CHARACTERISTICS: Histologically confirmed recurrent or metastatic breast cancer Bidimensionally measurable disease No bone scan abnormalities alone Lytic lesions allowed in conjunction with bone scan abnormalities No pure blastic bone metastases No pleural or peritoneal effusions No previously irradiated lesions Resected disease not allowed No brain metastases or leptomeningeal disease Hormone receptor status: Not specified PATIENT CHARACTERISTICS: Age: 18 and over Sex: Female Menopausal status: Not specified Performance status: Karnofsky 70-100% Life expectancy: Not specified Hematopoietic: Granulocyte count at least 1500/mm3 Hemoglobin at least 8.0 g/dL Platelet count at least 100,000/mm3 Hepatic: Bilirubin less than 1.5 mg/dL Renal: Creatinine less than 2.0 mg/dL Calcium no greater than 11.0 mg/dL Cardiovascular: No history of arrhythmias No history of other significant cardiac diseases No New York Heart Association class III or IV cardiac function Left ventricular ejection fraction at least 50% Pulmonary: No symptomatic lymphangitic pulmonary metastases Other: Not pregnant Negative pregnancy test No history of other malignancy except: Carcinoma in situ of the cervix Curatively treated nonmelanoma skin cancer No severe infection No severe malnutrition No other serious medical illness No history of grade 3-4 peripheral neuropathy PRIOR CONCURRENT THERAPY: Biologic therapy: No prior monoclonal antibody therapy Chemotherapy: At least 4 weeks since prior chemotherapy (6 weeks for nitrosoureas and mitomycin) and recovered No more than 3 prior chemotherapy regimens as adjuvant/neoadjuvant therapy or for disease At least 1 year since prior paclitaxel or docetaxel Prior anthracycline (doxorubicin or epirubicin) or mitoxantrone-based regimen allowed as adjuvant therapy or for advanced disease No other concurrent chemotherapy Endocrine therapy: At least 3 weeks since prior exogenous hormonal therapy for stage IV disease and/or as adjuvant therapy Radiotherapy: No radiotherapy to greater than 50% of marrow At least 4 weeks since prior radiotherapy and recovered No concurrent radiotherepy to the only measurable lesion Surgery: At least 2-3 weeks since prior surgery and recovered No concurrent surgery to the only measurable lesion Other: No concurrent nonprotocol treatment