Khanna, H, Davis, EE, Murga-Zamalloa, CA et al. (31 more authors) (2009) A common allele in RPGRIP1L is a modifier of retinal degeneration in ciliopathies. Nature Genetics, 41 (6). 739 - 745. ISSN 1061-4036
Abstract
Despite rapid advances in the identification of genes involved in disease, the predictive power of the genotype remains limited, in part owing to poorly understood effects of second-site modifiers. Here we demonstrate that a polymorphic coding variant of RPGRIP1L (retinitis pigmentosa GTPase regulator-interacting protein-1 like), a ciliary gene mutated in Meckel-Gruber (MKS) and Joubert (JBTS) syndromes, is associated with the development of retinal degeneration in individuals with ciliopathies caused by mutations in other genes. As part of our resequencing efforts of the ciliary proteome, we identified several putative loss-of-function RPGRIP1L mutations, including one common variant, A229T. Multiple genetic lines of evidence showed this allele to be associated with photoreceptor loss in ciliopathies. Moreover, we show that RPGRIP1L interacts biochemically with RPGR, loss of which causes retinal degeneration, and that the Thr229-encoded protein significantly compromises this interaction. Our data represent an example of modification of a discrete phenotype of syndromic disease and highlight the importance of a multifaceted approach for the discovery of modifier alleles of intermediate frequency and effect.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2009, The Authors. This is an author produced version of a paper published in Nature Genetics. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | Bardet-Biedl syndrome; linked retinitis pigmentosa; Leber congenital amaurosis; Joubert syndrome; centrosomal protein; Mutation analysis; Meckel syndrome; early-onset; ciliary; gene |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Inst of Biomed & Clin Sciences (LIBACS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 01 May 2015 15:52 |
Last Modified: | 20 Jan 2018 21:58 |
Published Version: | http://dx.doi.org/10.1038/ng.366 |
Status: | Published |
Publisher: | Nature Publishing Group |
Identification Number: | 10.1038/ng.366 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:84056 |