Phase II study of nedaplatin and irinotecan followed by gefitinib for elderly patients with unresectable non-small cell lung cancer

PURPOSE: We conducted a phase II study of combination chemotherapy with nedaplatin (NP) and irinotecan (CPT) followed by gefitinib to determine the effects and toxicities in patients 70 years or older with unresectable non-small cell lung cancer (NSCLC). METHODS: Eligible patients were entered to receive 3 courses of 50 mg/m(2) NP and 60 mg/m(2) CPT on days 1 and 8 every 4 weeks and sequential gefitinib 250 mg po once a day was followed until tumor progression. RESULTS: Twenty-eight patients received NP and CPT combination chemotherapy. One patient achieved CR, 10 PR, 14 SD and 3 PD, and the response rate was 39.3%. Twenty-one patients received gefitinib 250 mg per day until tumor progression after completion of the NP and CPT chemotherapy. Two patients with SD after NP and CPT chemotherapy achieved PR. For the 3-drug combination, there were 13 responders and the overall response rate was 42.9%. Of the toxicities associated with NP and CPT chemotherapy, grade 4 neutropenia, and grade 3 febrile neutropenia were observed in 24 (33.8%) and 3 (4.2%) courses, respectively. Of the toxicities associated with gefitinib treatment, grade 3 anemia, and SGOT and SGPT elevation were observed in one patient (4.8%) each, respectively. The median survival time was 8.7 months, and the 1- and 2-year survival rates were 42.9 and 32.1%, respectively. CONCLUSION: NP and CPT followed by gefitinib is feasible for elderly patients with unresectable NSCLC.