RecruitingDrug trialStudy of Antitumor Immune Response After cCRT and IO Treatment in Non-resectable III Stage NSCLC PatientsObservational, multicenter, one-arm, non-comparative study. Data will be recorded in a retrospectively manner. The study will be based on secondary data collected from patient clinical chart completed by the doctor during routine visits. The primary objective is describe the antitumor immune response generated in the context of IO (immunotherapy) treatment after cCRT in patients with unresectable NSCLC treated in real world.