Cadonilimab in Patients (Pts) With Advanced Non-small Cell Lung Cancer (NSCLC)

PRIMARY OBJECTIVES: 1. Dose discovery stage: evaluate the safety of cadonilimab combined with anlotinib and docetaxel in the treatment of locally advanced and metastatic NSCLC after failure of treatment with PD-L1/1 inhibitors and the recommended dose of anlotinib. 2. Dose expansion stage: evaluate the 6-month PFS rate of patients with locally advanced and metastatic NSCLC after failure of treatment with PD-L1/1 inhibitors by cadonilimab combined with anlotinib and docetaxel, which was evaluated by researchers based on RECIST v1.1. SECONDARY OBJECTIVES: 1. evaluate the objective response rate (ORR), progression-free survival (PFS), disease control rate (DCR), duration of response (DoR), time to response (TTR), and total survival (OS) of patients with locally advanced and metastatic NSCLC after failure of treatment with PD-L1/1 inhibitors with cadonilimab, anlotinib, and docetaxel. 2. evaluate the safety and tolerability of cadonilimab combined with arotinib and docetaxel in the treatment of locally advanced and metastatic NSCLC after failure of treatment with PD-L1/1 inhibitor. OUTLINE: This is a prospective, open, single-arm, multi-center, phase I b/II clinical study. All patients were confirmed Locally advanced (stage IIIB/IIIC) that cannot be resected by radical surgery and cannot accept radical synchronous/sequential radiotherapy and chemotherapy or metastatic (stage IV) NSCLC by histology or cytology. Patients must have progressed on at most a PD-1/L1 inhibitor and a platinum-based chemotherapy (combined or sequential, regardless of sequence), and at least two cycles of PD-1/L1 inhibitor (combined or non-combined chemotherapy) with clinical benefits (PFS ≥ 3 months). The study is divided into two parts. The first part is the dose discovery stage. The patients will receive a 21-day observation period of dose limiting toxicity (DLT). 3-6 subjects will be enrolled in each dose, and finally evaluate the safety and determine the recommended dose (RP2D) for phase II clinical study according to the "3+3" principle. We will continue to recruit 44 patients at the dose expansion stage.