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From lipid locus to drug target through human genomics.

Accepted version
Peer-reviewed

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Article

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Authors

van der Laan, Sander W 
Harshfield, Eric L 
Hemerich, Daiane 
Stacey, David 
Wood, Angela M 

Abstract

In the last decade, over 175 genetic loci have robustly been associated to levels of major circulating blood lipids. Most loci are specific to one or two lipids, whereas some (SUGP1, ZPR1, TRIB1, HERPUD1, and FADS1) are associated to all. While exposing the polygenic architecture of circulating lipids and the underpinnings of dyslipidaemia, these genome-wide association studies (GWAS) have provided further evidence of the critical role that lipids play in coronary heart disease (CHD) risk, as indicated by the 2.7-fold enrichment for macrophage gene expression in atherosclerotic plaques and the association of 25 loci (such as PCSK9, APOB, ABCG5-G8, KCNK5, LPL, HMGCR, NPC1L1, CETP, TRIB1, ABO, PMAIP1-MC4R, and LDLR) with CHD. These GWAS also confirmed known and commonly used therapeutic targets, including HMGCR (statins), PCSK9 (antibodies), and NPC1L1 (ezetimibe). As we head into the post-GWAS era, we offer suggestions for how to move forward beyond genetic risk loci, towards refining the biology behind the associations and identifying causal genes and therapeutic targets. Deep phenotyping through lipidomics and metabolomics will refine and increase the resolution to find causal and druggable targets, and studies aimed at demonstrating gene transcriptional and regulatory effects of lipid associated loci will further aid in identifying these targets. Thus, we argue the need for deeply phenotyped, large genetic association studies to reduce costs and failures and increase the efficiency of the drug discovery pipeline. We conjecture that in the next decade a paradigm shift will tip the balance towards a data-driven approach to therapeutic target development and the application of precision medicine where human genomics takes centre stage.

Description

Keywords

Cardiovascular Diseases, Delta-5 Fatty Acid Desaturase, Drug Discovery, Dyslipidemias, Genetic Markers, Genetic Predisposition to Disease, Genetic Variation, Genome-Wide Association Study, Humans, Hypolipidemic Agents, Lipid Metabolism, Lipids, Metabolomics, Molecular Targeted Therapy, Phenotype

Journal Title

Cardiovasc Res

Conference Name

Journal ISSN

0008-6363
1755-3245

Volume Title

114

Publisher

Oxford University Press (OUP)
Sponsorship
European Commission and European Federation of Pharmaceutical Industries and Associations (EFPIA) FP7 Innovative Medicines Initiative (IMI) (116074)
Medical Research Council (MR/S003746/1)
Medical Research Council (MR/L003120/1)
Medical Research Council (G0800270)
Wellcome Trust (105602/Z/14/Z)
British Heart Foundation (None)
European Research Council (268834)
Medical Research Council (G0800270/1)