Homozygous loss‐of‐function mutation of the LEPREL1 gene causes severe non‐syndromic high myopia with early‐onset cataract. (26th November 2013)

• Record Type: Journal Article
• Authors: Guo, H.; Tong, P.; Peng, Y.; Wang, T.; Liu, Y.; Chen, J.; Li, Y.; Tian, Q.; Hu, Y.; Zheng, Y.; Xiao, L.; Xiong, W.; Pan, Q.; Hu, Z.; Xia, K.
• Is Part Of: Clinical genetics. Volume 86:Number 6(2014:Dec.)
• Page Start: 575
• Page End: 579
• Publication Date: 2013-11-26
• Subjects: Medical genetics -- Periodicals; 616.0420
• DOI: 10.1111/cge.12309
• Languages: English
• ISSNs: 0009-9163

Abstract

<abstract abstract-type="main" id="cge12309-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p id="cge12309-para-0001">High myopia is a severe visual impairment which can increase the risk of retinal degeneration, subretinal hemorrhage, choroidal neovascularization, cataract and retinal detachment. We recruited an autosomal‐recessive high myopia family, with affected subjects who also present early‐onset cataract, retinal degeneration and other complications. Using targeted capturing and whole exome sequencing, we identified a homozygous non‐sense mutation in the <italic>LEPREL1</italic> gene which causes premature termination of the translation at the fifth amino acid (c.13C&gt;T; p.Q5X), co‐segregating with the phenotypes. <italic>LEPREL1</italic> encodes a proline hydroxylase called prolyl 3‐hydroxylase 2 (P3H2), a 2‐oxoglutarate‐dependent dioxygenase that hydroxylates collagens. The results show that <italic>LEPREL1</italic> plays an important role in eye development and homozygous loss‐of‐function mutation of this gene can cause severely high myopia and early‐onset cataract. Our study also strongly suggests that the disruption of collagen modification is one of the pathogenic mechanisms of high myopia and cataract.</p> </abstract>