Comparing the effect profile of CETP in individuals of East Asian and European ancestries

Author:

Dunca DianaORCID,Chopade SandeshORCID,Gordillo-Marañón MaríaORCID,Hingorani Aroon D.ORCID,Kuchenbaecker KarolineORCID,Finan ChrisORCID,Schmidt Amand F.ORCID

Abstract

AbstractBackgroundCholesteryl ester transfer protein (CETP) is a lipid drug target under development for coronary heart disease (CHD) in both European and East Asian populations. Previous drug target Mendelian randomization (MR) studies conducted in East Asians failed to show a CHD effect, which has been interpreted as lack of effectiveness of CETP inhibition for CHD prevention in this population.ObjectivesIn this study, we inferred the effect of CETP inhibition in individuals of European and East Asian ancestries using drug target Mendelian randomization.MethodsWe leveraged genetic associations ofCETPvariants with major blood lipid fractions for individuals of European (n=1,320,016) and East Asian (n=146,492) ancestries. Colocalization was employed to identify potential cross-ancestry signals ofCETPvariants for plasma concentrations of low-density lipoprotein cholesterol (LDL-C) or high-density lipoprotein cholesterol (HDL-C). Drug target MR was used to estimate ancestry-specific effects of on-targetCETPinhibition. Differences between ancestries were evaluated using interaction tests, applying a multiplicity corrected alpha of 1.9×10-3based on the 26 considered traits.ResultsThere was strong support (posterior probability: 1.00) of a shared causalCETPvariant affecting HDL-C in both populations, which was not observed for LDL-C. Employing drug target MR scaled to a standard deviation increase in HDL-C, we found that lower CETP was associated with lower LDL-C, Lp[a], systolic blood pressure and pulse pressure in both groups, but the effects were more pronounced in European individuals (interaction p-values < 1.9×10-3). Lower CETP was protective against CHD, angina, intracerebral haemorrhage and heart failure in both ancestries, for example for CHD in East Asians (OR 0.89, 95%CI 0.84;0.94) compared to Europeans (OR 0.95, 95%CI 0.92;0.99, interaction p-value=0.05).ConclusionsIn conclusion, on-target inhibition of CETP is anticipated to decrease cardiovascular disease in individuals of both European and East Asian ancestries.

Publisher

Cold Spring Harbor Laboratory

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