Prospective phase II trial of a combination of fixed dose rate infusion of gemcitabine with cisplatin and UFT as a first-line treatment in patients with advanced non-small-cell lung carcinoma

Abstract

The standard chemotherapy for non-elderly patients with advanced non-small-cell lung cancer (NSCLC) is platinum-based doublet combination therapy. Preclinical and clinical evidence indicates that infusion at the fixed dose rate (FDR) of 10mg/(m(2)min) may be more effective than a standard 30-min infusion of gemcitabine. In addition, oral uracil-tegafur (UFT) was associated with a survival advantage in the adjuvant setting. Therefore, we performed a phase II study using the combination of gemcitabine, cisplatin and UFT as first-line therapy in patients with advanced NSCLC. Eligible patients had histologically or cytologically confirmed stage IIIB or IV NSCLC with a performance status of 0-2 and were chemotherapy-naive. Gemcitabine (1,250 mg/m(2), 10mg/(m(2)min) on days 1 and 8, respectively) and cisplatin (75 mg/m(2) on day 1) were injected intravenously and UFT (400mg/day) was administered orally on days 1-14. Treatment was repeated every 3 weeks for up to six cycles. Primary endpoint was overall response rate and secondary endpoints were overall survival, time to progression and safety profile. Thirty-seven patients were enrolled. The median age was 60 years (range: 44-72 years). The performance status was 0 in 4, 1 in 30, and 2 in 3 patients. Twenty-three patients completed six cycles. Complete response was achieved in one (3%) patient, partial response in 17 (46%) patients, and stable disease in 10 (27%) patients. The overall response rate was 48.6% on an intention-to-treat basis and 54.5% of patients in whom a response evaluation was possible (n=33). The median survival time was 14.7 months (95% confidence interval [CI] 11.2-18.2), the 1-year survival rate was 54% and the median time to progression was 5.4 months (95% CI 4.3-6.4). Toxicities were moderate and mostly hematological adverse events. Grade 3/4 neutropenia occurred in 37% of patients and four patients experienced febrile neutropenia. Grade 3/4 anemia and thrombocytopenia occurred in 19% and 5% of patients, respectively. Non-hematological toxicities were mild. The combination of gemcitabine, cisplatin and UFT is an active and well-tolerated first-line regimen in patients with advanced NSCLC.