Chemo-immunotherapy Induction Followed by Hypo-radiotherapy in LA-NSCLC(CHIC)

"* Part 1: Patients who have received induction immunotherapy plus chemotherapy for 2-6 cycles and met the hypoRT criteria will be enrolled into the study.~* Part 2: patients will be treated with hypofractionated radiation therapy in doses up to 48-60 Gy at 4 Gy per fraction.~* Part 3: patients with partial response or stable disease after part 2 will be eligible for immunotherapy maintenance, for up to 1 years or until disease progression or unacceptable toxicity."