Yunpeng Yang1, Hui Zhou2, Li Zhang3. 1. Medical Oncology Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, People's Republic of China. 2. Medical Science and Strategy Oncology, Innovent Biologics, Inc., Shanghai, People's Republic of China. 3. Medical Oncology Department, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, People's Republic of China. Electronic address: zhangli@sysucc.org.cn.