Neoadjuvant Chemotherapy and Tilelizumab in Stage III（cTNM-IIIA.IIIB）Non-small-cell Lung Cancer

The study included a screening period, a treatment period (including neoadjuvant treatment, surgery and postoperative adjuvant treatment), and a survival follow-up period. Patients who meet the admission criteria will receive the following treatments according to disease stage (IIIA/IIIB) and histology (squamous or non-squamous) Tilelizumab + platinum-containing dual-agent chemotherapy, every 3 weeks as a cycle , for 2 cycles, followed by surgical resection, and postoperative adjuvant Tilelizumab + platinum-containing dual-agent chemotherapy 2cycles,every 3 weeks as a cycle, and Tilelizumab every 3 weeks up to 15cycles maintenance treatment. The rate of radical resection (R0) was evaluated through the research center of the investigator, which is expected to be 20% higher compared with historical controls, and the effectiveness of tislelizumab combined with platinum-containing dual-drug chemotherapy as a neoadjuvant treatment was evaluated.