ARHGEF12 influences the risk of glaucoma by increasing intraocular pressure

  • H. Springelkamp
  • , A.I. Iglesias
  • , G. Cuellar-Partida
  • , N. Amin
  • , K.P. Burdon
  • , E.M. Van Leeuwen
  • , P. Gharahkhani
  • , A. Mishra
  • , S.J. Van Der Lee
  • , A.W. Hewitt
  • , F. Rivadeneira
  • , A.C. Viswanathan
  • , R.C.W. Wolfs
  • , N.G. Martin
  • , W.D. Ramdas
  • , L.M. Van Koolwijk
  • , Craig Pennell
  • , J.R. Vingerling
  • , Jenny Mountain
  • , A.G. Uitterlinden
  • A. Hofman, P. Mitchell, H.G. Lemij, J.J. Wang, C.C.W. Klaver, David Mackey, J.E. Craig, C.M. Van Duijn, S. Macgregor

Research output: Contribution to journalArticlepeer-review

Abstract

Primary open-angle glaucoma (POAG) is a blinding disease. Two important risk factors for this disease are a positive family history and elevated intraocular pressure (IOP), which is also highly heritable. Genes found to date associated with IOP and POAG are ABCA1, CAV1/CAV2, GAS7 and TMCO1. However, these genes explain only a small part of the heritability of IOP and POAG. We performed a genome-wide association study of IOP in the population-based Rotterdam Study I and Rotterdam Study II using single nucleotide polymorphisms (SNPs) imputed to 1000 Genomes. In this discovery cohort (n = 8105), we identified a new locus associated with IOP. The most significantly associated SNP was rs58073046 (β = 0.44, P-value = 1.87 × 10−8, minor allele frequency = 0.12), within the gene ARHGEF12. Independent replication in five population-based studies (n = 7471) resulted in an effect size in the same direction that was significantly associated (β = 0.16, P-value = 0.04). The SNP was also significantly associated with POAG in two independent case–control studies [n = 1225 cases and n = 4117 controls; odds ratio (OR) = 1.53, P-value = 1.99 × 10−8], especially with high-tension glaucoma (OR = 1.66, P-value = 2.81 × 10−9; for normal-tension glaucoma OR = 1.29, P-value = 4.23 × 10−2). ARHGEF12 plays an important role in the RhoA/RhoA kinase pathway, which has been implicated in IOP regulation. Furthermore, it binds to ABCA1 and links the ABCA1, CAV1/CAV2 and GAS7 pathway to Mendelian POAG genes (MYOC, OPTN, WDR36). In conclusion, this study identified a novel association between IOP and ARHGEF12.

© The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: [email protected]
Original languageEnglish
Pages (from-to)2689-2699
JournalHuman Molecular Genetics
Volume24
Issue number9
Early online date30 Jan 2015
DOIs
Publication statusPublished - 2015

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