Multi-trait genome-wide association study identifies new loci associated with optic disc parameters

Author:

Bonnemaijer Pieter W. M.ORCID, ,Leeuwen Elisabeth M. van,Iglesias Adriana I.ORCID,Gharahkhani PuyaORCID,Vitart VeroniqueORCID,Khawaja Anthony P.ORCID,Simcoe MarkORCID,Höhn René,Cree Angela J.,Igo Rob P.,Gerhold-Ay Aslihan,Nickels StefanORCID,Wilson James F.ORCID,Hayward CarolineORCID,Boutin Thibaud S.ORCID,Polašek Ozren,Aung Tin,Khor Chiea ChuenORCID,Amin Najaf,Lotery Andrew J.ORCID,Wiggs Janey L.ORCID,Cheng Ching-YuORCID,Hysi Pirro G.ORCID,Hammond Christopher J.ORCID,Thiadens Alberta A. H. J.,MacGregor StuartORCID,Klaver Caroline C. W.ORCID,Duijn Cornelia M. van, ,

Abstract

AbstractA new avenue of mining published genome-wide association studies includes the joint analysis of related traits. The power of this approach depends on the genetic correlation of traits, which reflects the number of pleiotropic loci, i.e. genetic loci influencing multiple traits. Here, we applied new meta-analyses of optic nerve head (ONH) related traits implicated in primary open-angle glaucoma (POAG); intraocular pressure and central corneal thickness using Haplotype reference consortium imputations. We performed a multi-trait analysis of ONH parameters cup area, disc area and vertical cup-disc ratio. We uncover new variants; rs11158547 in PPP1R36-PLEKHG3 and rs1028727 near SERPINE3 at genome-wide significance that replicate in independent Asian cohorts imputed to 1000 Genomes. At this point, validation of these variants in POAG cohorts is hampered by the high degree of heterogeneity. Our results show that multi-trait analysis is a valid approach to identify novel pleiotropic variants for ONH.

Funder

All funders per study are acknowledged in the Supplementary File

Publisher

Springer Science and Business Media LLC

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,Medicine (miscellaneous)

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