The Phase Ib Clinical Trial of the XH-S004 Tablet in Patients With Chronic Obstructive Pulmonary Disease (COPD) to Evaluate Its Safety, Tolerability, Pharmacokinetic Characteristics and Pharmacodynamic Characteristics After Multiple Administrations

This study is a multicenter, double-blind, placebo-controlled, up-titration study conducted in china, aimed at evaluating the safety and tolerability, pharmacokinetics (PK), pharmacodynamics (PD) and preliminary efficacy of XH-S004 administered once daily for 140 days in COPD patients. This study plans to enroll 81 COPD patients. Patients who sign the informed consent form will be screened according to the enrollment criteria, and randomly divided into 2 groups in 2:1 ratio (XH-S004 group: 54 participants and placebo group: 27 participants). Participants in XH-S004 group will receive XH-S004 20 mg for 28 days in treatment period 1, then up-titrated to XH-S004 40 mg for 84 days in treatment period 2, finally continue with XH-S004 60 mg for 28 days in treamtment period 3. Participants in placebo group will receive matching placebo from day 1 to day 140 (140 days in total).