Article
作者: Zhang, Mengqi ; Lin, Jie ; Xu, Guangma ; Hao, Yu ; Huang, Wei ; Yan, Peishi ; Han, Xuebin ; Tang, Yida ; Qiao, Ping ; Yu, Jianjun ; Chen, Jie ; Yao, Zhuhua ; Chen, Jiyan ; Wang, Minghui ; Ma, Xueping ; Peng, Daoquan ; Ji, Yuan ; He, Yongming ; Wang, Gaopin ; Ma, Changsheng
BACKGROUND AND AIMS:Heterozygous familial hypercholesterolemia (HeFH) is a prevalent autosomal dominant disorder of lipid metabolism but severely underdiagnosed and undertreated in China. This phase 3 trial aims to evaluate the efficacy and safety of ongericimab, a novel monoclonal antibody that targets proprotein convertase subtilisin/kexin type 9 (PCSK9), in Chinese patients with HeFH.
METHODS:Patients who have been diagnosed with definite HeFH according to Dutch Lipid Clinical Network criteria and receiving stable and optimized lipid-lowering therapy were enrolled. A total of 135 patients were randomly assigned in a 2:1:2:1 ratio to receive either ongericimab 150 mg or matching placebo every 2 weeks (Q2W), or ongericimab 450 mg or matching placebo every 4 weeks (Q4W) for 24 weeks. Patients were stratified according to the use of high-intensity statins. The primary endpoint was the percentage change in LDL-C from baseline to week 24.
RESULTS:Our findings demonstrated that treatment with ongericimab resulted in a significant reduction in LDL-C at week 24. The least-squares mean difference was -69.4 % (95 % confidence interval [CI]: -80.9 %, -57.9 %; p < 0.0001) for the ongericimab 150 mg Q2W group, and -80.6 % (95 % CI: -92.1 %, -69.1 %; p < 0.0001) for ongericimab 450 mg Q4W group compared to respective matching placebo groups. Meanwhile, ongericimab also favorably altered other lipid parameters. A similar incidence of adverse events was observed in the ongericimab and placebo groups.
CONCLUSIONS:Ongericimab administered at either 150 mg Q2W or 450 mg Q4W for 24 weeks, significantly reduced LDL-C levels and was well-tolerated in Chinese patients with HeFH.
CLINICAL TRIAL REGISTRATION:http://www.
CLINICALTRIALS:gov; Unique Identifier: NCT05325203.