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

"Radiotherapy techniques: Volumetric-modulated arc therapy (VMAT) and image guided radiotherapy (IGRT).~Radiotherapy dose: Radical prescription dose of 60 gray (Gy) ± 10%, 2 Gy per session, once a day, 5 days a week."

Cisplatin 25 mg/m2 once per week for a total of 5-6 cycles. For participants who have not completed 4 cycles of conversion chemotherapy in combination with immunotherapy, the original chemotherapy regimen may also be used, with the total number of chemotherapy cycles not exceeding 6 cycles.

Concurrent programmed cell death 1 (PD-1) or programmed cell death L1 (PD-L1) inhibitors every 3 weeks during radiotherapy and no more than 3 doses during the course of radiotherapy.

All participants will be evaluated within 1-42 days after receiving radiation (chemotherapy). If disease progression does not occur, adjuvant therapy with a PD-1 or PD-L1 inhibitor is continued until disease progression up to 1 year.