Efficacy and safety of proprotein convertase subtilisin/ kexin type 9 monoclonal antibody in adults with familial hypercholesterolemia

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Abstract

Proprotein convertase-subtilisin/kexin type 9 (PCSK9) monoclonal antibody is a new therapy to reduce low-density lipoprotein cholesterol (LDL-C) level in patients with familial hypercholesterolemia (FH). This pooled analysis aimed to estimate the efficacy and safety of PCSK9 antibody therapy in FH. Reports of randomized controlled trials (RCTs) comparing PCSK9 antibody to placebo were retrieved by a search of MEDLINE via PubMed, EMBASE, the Cochrane Library databases, ClinicalTrials.gov and Clinical Trial Results (up to November 30, 2015) with no language restriction. Data were abstracted by a standardized protocol. We found eight RCTs (1,879 patients with FH) for the pooled analysis. As compared with placebo, PCSK9 antibody therapy remarkably reduced LDL-C level (mean reduction: -48.54 %, 95 % CI: -53.19 to -43.88), total cholesterol (mean reduction: -31.08%, 95 % CI: -35.20 to -26.95), lipoprotein (a) (mean reduction: -20.44%, 95 % CI: -25.21 to -15.66), and apolipoprotein B (mean reduction: -36.32%, 95 % CI: -40.75 to -31.90) and elevated the level of high-density lipoprotein cholesterol (mean change: 6.29 %, 95 % CI: 5.12 to 7.46) and apolipoprotein A1(mean change: 4.86%, 95 % CI: 3.77 to 5.95). Therapy with and without PCSK9 antibodies did not differ in rate of adverse events (pooled rate: 50.86 % vs. 48.63%; RR: 1.03; 95 % CI: 0.92 to 1.15; P = 0.64; heterogeneity P = 0.13; I2= 40%) or serious adverse events (pooled rate: 7.14% vs. 6.74%; RR: 1.05; 95 % CI: 0.70 to 1.58; P = 0.80; heterogeneity P = 0.69; I2= 0%). PCSK9 antibody may be an effective and safe treatment for FH.

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Li, B., Hao, P. P., Zhang, Y., Yin, R. H., Kong, Q. Z., Cai, X. J., … Su, G. H. (2017). Efficacy and safety of proprotein convertase subtilisin/ kexin type 9 monoclonal antibody in adults with familial hypercholesterolemia. Oncotarget, 8(18), 30455–30463. https://doi.org/10.18632/oncotarget.10762

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