Phase II Study of RC1416 Injection in COPD

Inclusion Criteria: * Aged 40 to 85 years (inclusive) at the time of signing the informed consent form, regardless of gender. * Body Mass Index (BMI) ≥ 16 kg/m². * Meets the diagnostic criteria for chronic obstructive pulmonary disease (COPD), and has medical records or relevant documentation indicating a history of COPD for ≥ 12 months at screening. * Post-bronchodilator ratio of forced expiratory volume in 1 second (FEV1) to forced vital capacity (FVC) \< 0.7, and post-bronchodilator FEV1 ≥ 30% and \< 80% of the predicted value at screening. * A current smoker or former smoker with a smoking history of ≥ 10 pack-years, or a history of exposure to other risk factors. * A score of ≥ 2 on the modified Medical Research Council (mMRC) dyspnea scale at screening. * Medical records or relevant documentation showing ≥ 2 moderate COPD. exacerbations (AECOPD) or ≥ 1 severe AECOPD within the 12 months prior to screening. * Medical records or relevant documentation showing receipt of background triple therapy (ICS + LABA + LAMA) for ≥ 3 months prior to randomization. * A blood eosinophil count ≥ 150/mm³ (0.15×10⁹/L) at screening. Exclusion Criteria: * A current diagnosis of asthma or a history of asthma. * Presence of other significant pulmonary diseases except COPD as judged by the Investigator. * History of malignancy . * A history of autoimmune diseases , or treatment with biologics or systemic immunosuppressants for inflammatory diseases within 8 weeks or 5 half-lives (whichever…