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Sci Rep. 2018 Dec 14;8(1):17887. doi: 10.1038/s41598-018-36204-7.

Impact of ezetimibe on plasma lipoprotein(a) concentrations as monotherapy or in combination with statins: a systematic review and meta-analysis of randomized controlled trials.

Author information

1
Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. saheb2000@yahoo.com.
2
Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. saheb2000@yahoo.com.
3
School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran. saheb2000@yahoo.com.
4
Biomedical Research Unit, Mexican Social Security Institute, Durango, Mexico.
5
Unit of Internal Medicine, Angiology and Arteriosclerosis Diseases, Department of Medicine, University of Perugia, Perugia, Italy.
6
Department of Hypertension, WAM University Hospital in Lodz, Medical University of Lodz, Zeromskiego 113, Lodz, Poland.
7
Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland.
8
School of Medicine, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Australia.
9
Lipid Disorders Clinic, Cardiometabolic Services, Department of Cardiology, Royal Perth Hospital, GPO Box X2213, Perth, Australia.
10
Centro Dislipidemie, A.S.S.T. Grande Ospedale Metropolitano Niguarda, Milan, Italy.
11
Department of Clinical Biochemistry, Sultan Qaboos University Hospital, Muscat, Oman.
12
Weill Cornell Medicine Qatar, Doha, Qatar. sla2002@qatar-med.cornell.edu.

Abstract

The aim of this meta-analysis of randomized placebo-controlled clinical trials was to assess the effect of ezetimibe on plasma lipoprotein(a) concentrations. Only randomized placebo-controlled trials investigating the impact of ezetimibe treatment on cholesterol lowering that include lipoprotein(a) measurement were searched in PubMed-Medline, SCOPUS, Web of Science and Google Scholar databases (from inception to February 26th, 2018). A random-effects model and generic inverse variance method were used for quantitative data synthesis. Sensitivity analysis was conducted using the leave-one-out method. A weighted random-effects meta-regression was performed to evaluate the impact of potential confounders on lipoprotein concentrations. This meta-analysis of data from 10 randomized placebo-controlled clinical trials (15 treatment arms) involving a total of 5188 (3020 ezetimibe and 2168 control) subjects showed that ezetimibe therapy had no effect on altering plasma Lp(a) concentrations (WMD: -2.59%, 95% CI: -8.26, 3.08, p = 0.370; I2 = 88.71%, p(Q) < 0.001). In the subgroup analysis, no significant alteration in plasma Lp(a) levels was observed either in trials assessing the impact of monotherapy with ezetimibe versus placebo (WMD: -4.64%, 95% CI: -11.53, 2.25, p = 0.187; I2 = 65.38%, p(Q) = 0.005) or in trials evaluating the impact of adding ezetimibe to a statin versus statin therapy alone (WMD: -1.04%, 95% CI: -6.34, 4.26, p = 0.700; I2 = 58.51%, p(Q) = 0.025). The results of this meta-analysis suggest that ezetimibe treatment either alone or in combination with a statin does not affect plasma lipoprotein(a) levels.

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