This study is designed to compare the efficacy and safety of first-line icotinib treatment and first-line chemotherapy followed by maintenance with icotinib.~Primary endpoint:~Progression-free survival between first-line icotinib treatment and first-line chemotherapy followed by maintenance with icotinib~Secondary endpoint:~Overall survival between icotinib and chemotherapy~Time to Progression between icotinib and chemotherapy~Objective response rate and disease control rate between icotinib and chemotherapy
This study is designed to compare the efficacy and safety of first-line icotinib treatment and first-line chemotherapy followed by maintenance treatment with icotinib.