Unresectable Stage III Non-small-cell Lung Cancer

The goal of this phase 2 trial is to evaluate the efficacy and safety of tislelizumab combined with intravenous chemotherapy and bronchial artery chemoembolization (BACE) as conversion therapy for patients with initially unresectable stage IIIA-IIIB non-small cell lung cancer (NSCLC). The main questions it aims to answer are: * What is the 1-year event-free survival (EFS) rate with this treatment? * Can this treatment improve tumor response and the chance of curative-intent resection? * What adverse events occur during treatment? Participants will receive tislelizumab, intravenous chemotherapy, and BACE for up to 4 cycles. Tumor response and resectability will be evaluated by imaging and multidisciplinary team (MDT) assessment every 2 cycles. Participants who become resectable may undergo surgery followed by postoperative treatment per protocol. Participants who remain unresectable after 4 cycles will receive guideline-recommended chemoradiotherapy followed by tislelizumab consolidation. Regular follow-up will be performed for efficacy and safety assessment.

This study is a single-arm, phase II clinical trial evaluating the safety and efficacy of IBI363 combined with chemotherapy as a neoadjuvant treatment of non-small cell lung cancer.

For unresectable stage III (8th TNM) non-small cell lung cancer, chemoradiotherpay plus immunotherapy is recommended by PACIFIC trial. However, it is unclear whether induction chemoimmunotherapy followed by surgery or radiotherapy can provide good survival for this population. This prospective observational study aims to investigate the efficacy and safety of the therapeutic regimen of chemoimmunotherapy plus surgery/radiotherapy.