Neoadjuvant Therapy of Sintilimab Combined With Chemotherapy for Resectable Squamous Cell NSCLC（neoSCORE Ⅱ）

This is a Phase 3, prospective, randomized, open-label, multi-center study that assesses the efficacy and safety of neoadjuvant therapy with different cycles of sintilimab combined with chemotherapy for Resectable Squamous Cell NSCLC. In this trial, eligible subjects will be randomly assigned to arm A and arm B (1:1). Subjects in arm A will receive 3 cycles of neoadjuvant sintilimab with chemotherapy and arm B will receive 4 cycles of neoadjuvant sintilimab with chemotherapy, followed by surgery within the 3-5th week after the last dose of sintilimab. After operation, both subjects in arm A and B can receive the treatment of sintilimab for up to 1 year according to the requirements of patients. The primary purpose is MPR rate of Resectable Squamous Cell NSCLC with different cycles of sintilimab combined with chemotherapy, which is defined as the percentage of participants having ≤10% viable tumor cells in the pathological examination of resected specimens.