Combination chemotherapy with cyclophosphamide, adriamycin, intermediate dose methotrexate, and folinic acid rescue (CAMF) in advanced lung cancer

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Abstract
Combination chemotherapy appears superior to single-agent therapy in treating a wide variety of tumors. Encouraged by this data, we conducted a pilot study using cyclophosphamide, adriamycin, intermediate dose methotrexate and folinic acid rescue (CAMF) in patients with advanced lung cancer. Forty-eight patients with unresectable tumors were entered on this trial, and treated with 500 mg/m2 intravenously administered cyclophosphamide, 50 mg/m2 intravenously administered adriamycin, 40 – 200 mg/m2 orally administered methotrexate (4 doses/24 hrs), and 5 mg orally administered folinic acid (6 doses/36 hrs); this regimen was repeated every three weeks if tolerable. There were 43 patients evaluable for toxicity and 34 (non-small cell types) for response. The major toxicities were myelosup-pression and nausea and vomiting. The overall response rate (complete and partial responses) was 29.4% (10/34) and in 13 patients (38%), the disease was stabilized. Those responding had a median survival time of 10.5 months versus 4 months for nonresponders. Patients in whom the disease was stabilized had a median survival time of 8 months. CAMF is a well-tolerated drug combination with promising results in patients with advanced lung cancer.