2. Icotinib is a new type of small molecule EGFR TKI, developed and patented by Zhejiang BetaPharma Co., Ltd.(Hangzhou, Zhejiang, China, Patent No. WO2003082830). It has the similar anti-tumor activity with gefitinib, erlotinib. Pre-clinical studies showed icotinib could significantly inhibit the EGFR tyrosine kinase activity. Notably, anti-tumor activities were observed in patients with advanced NSCLC.