Abstract
AbstractHomozygous familial hypercholesterolemia (HoFH) is a rare and serious genetic condition characterized by premature cardiovascular disease due to severely elevated low‐density lipoprotein cholesterol (LDL‐C). HoFH primarily results from loss‐of‐function (LOF) mutations in the LDL receptor (LDLR), reducing LDL‐C clearance such that patients experience severe hypercholesterolemia, exacerbating the risk of developing cardiovascular events. Treatment options such as statins, lomitapide, ezetimibe, proprotein convertase subtilisin/kexin type 9 inhibitors, and apheresis help lower LDL‐C; however, many patients with HoFH still fail to reach their target LDL‐C levels and many of these lipid‐lowering therapies are not indicated for pediatric use. Angiopoietin‐like protein 3 (ANGPTL3) has been identified as a target to treat elevated LDL‐C by acting as a natural inhibitor of lipoprotein lipase (LPL) and endothelial lipase (EL), enzymes involved in the hydrolysis of the triglyceride and phospholipid content of very low‐density lipoproteins. Persons heterozygous for LOF mutations in ANGPTL3 were reported to have lower LDL‐C than non‐carriers and lower risk of coronary artery disease. Evinacumab is a first‐in‐class human monoclonal antibody that specifically binds to ANGPTL3 to prevent its inhibition of LPL and EL. In clinical trials, a 15 mg/kg intravenous dose every 4 weeks has shown a mean percent change from baseline in LDL‐C of ~50% in adult, adolescent, and pediatric patients with HoFH. This mini review article describes the mechanism of action of evinacumab, evinacumab population PK and PD modeling, and clinical development history of evinacumab for the treatment of HoFH.
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