Radiotherapy Combined With ICIs as Treatment for LA-NSCLC After Failing Induction Immunochemotherapy

This is a prospective, real-world cohort study, which aimed to evaluate the safety and efficacy of immunotherapy followed by combined radiotherapy. Participants will be selected and entered into three different cohorts according to different performance status(PS) scores and radiotherapy schedules based on the amount of bilateral lungs treated. Cohort A: PS=0-1 and bilateral lung V20≤20%, mean lung dose(MLD)≤11 gray(Gy), radiotherapy and immunotherapy, followed by immunotherapy for up to 1 year; Cohort B: PS=0-1 and 20%\<bilateral lung V20≤25% or 11 Gy\<MLD≤13 Gy, radiotherapy combined with immunotherapy, followed by immunotherapy for up to 1 year; Cohort C: PS=2 or 25%\<bilateral V20≤30% and 3 Gy \<MLD≤ 17 Gy, radiotherapy alone, followed by immunotherapy for up to 1 year.