A Multicenter, Randomized, Double-blind, Placebo-controlled Phase III Clinical Study to Evaluate the Safety and Efficacy of SAL003 in Combination With Statin Therapy in Patients With Hypercholesterolemia and Mixed Dyslipidemia

A Multicenter, Randomized, Double-Blind, Placebo-Controlled Phase III Clinical Study to Evaluate the Safety and Efficacy of Recombinant Fully Human Anti-PCSK9 Monoclonal Antibody Injection (SAL003) in Combination with Statin Therapy in Patients with Hypercholesterolemia and Mixed Dyslipidemia.

This is a Phase III, multicenter, randomized, double-blind, placebo-controlled study designed to evaluate the efficacy and safety of SAL003, a recombinant fully human anti-PCSK9 monoclonal antibody, in Chinese patients with hypercholesterolemia and mixed dyslipidemia at very high or high cardiovascular risk who have not achieved target LDL-C levels despite stable, moderate- to high-intensity statin therapy (with or without ezetimibe). Approximately 720 participants will be randomized in a 2:1 ratio to receive either SAL003 140 mg or matching placebo, administered subcutaneously every 4 weeks for 24 weeks. Following the double-blind period, all participants will enter an open-label extension period and receive SAL003 140 mg Q4W for an additional 28 weeks, with a total study duration of 52 weeks. The primary efficacy endpoint is the percent change from baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 24. Key secondary endpoints include the absolute change in LDL-C, the proportion of subjects achieving LDL-C target levels, and changes in other lipid parameters.