PDCD1 and lung carcinoma: SHR1210 is an anti-PD-1 checkpoint inhibitor that was developed by Shanghai Hengrui Pharmaceutical Co. Ltd. The CTR20160175 trial is estimated to enroll 32–51 Chinese patients with advanced solid tumors (e.g., lung cancer, nasopharyngeal carcinoma, esophagus carcinoma, gastric carcinoma, and hepatic carcinoma).