Panel-based targeted exome sequencing reveals novel candidate susceptibility loci for age-related cataracts in Chinese Cohort

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Li-Li Li
  • Wei Li
  • Zi-Wei Wang
  • Feng-Juan Gao
  • Fang-Yuan Hu
  • Sheng-Hai Zhang
  • Shou-Fang Qu
  • Jie Huang
  • Ji-Hong Wu
  • Fang Chen

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article numbere1218
Journal / PublicationMolecular genetics & genomic medicine
Online published26 Apr 2020
Publication statusOnline published - 26 Apr 2020

Abstract

Background: Age-related cataracts (ARC) is the most common blinding eye disease worldwide, and its incidence tend to become younger. However, the relationship between genetic factors and mechanisms is not fully understood. The aim of the study was to further clarify the relationship between ARC and genetic mechanisms in East Asian populations and to elucidate the pathogenesis. 
Methods: The study collected 191 sporadic cataracts and 208 healthy people from the eastern provinces of China, with an average age of about 60 years. All participants were subjected to a comprehensive ophthalmic clinical examination and peripheral blood samples were collected and their genomic DNA was extracted. Mutations were screened among 792 candidate genes to enhance understanding of the disease through targeted capture and high-throughput sequencing. 
Results: We identified novel candidate susceptibility gene, which may serve as a potential susceptibility factor leading to an increase in the incidence of age-related cataracts. Three novel loci are associated with age-related cataracts significant significance: rs129882 in DBH (p = 5.27E-07, odds ratio = 3.9), rs1800280 in DMD (p = 2.85E-06, odds ratio = 1.4) and rs2871776 in ATP13A2 (p = 4.18E-05, odds ratio = 0.04). Gene–gene interaction analysis revealed that the most significant interactions between genes include the interaction between DBH and TUB (rs17847537 in TUB, rs129882 in DBH, p-value = 2.12E-14), and the interaction between DBH and DMD (rs1800280 in DMD, rs129882 in DBH, p-value = 2.12E-14). Pathway analysis shows that the most significant processes are concentrated in response to light stimulation (adjusted p-Value = 5.56E-03), response to radiation (adjusted P-Value = 5.56E-03), abiotic stimulus (adjusted p-Value = 5.56E-03). eQTL analysis shows that DBH rs129882 could regulate the expression of DBH mRNA in various tissues including retina. 
Conclusion: Our study indicates rs129882 and rs1800280 loci are associated with age-related cataracts, which enlarge the gene map of age-related cataracts.

Research Area(s)

  • age-related cataracts, panel-based targeted exome sequencing, susceptibility

Citation Format(s)

Panel-based targeted exome sequencing reveals novel candidate susceptibility loci for age-related cataracts in Chinese Cohort. / Li, Jian-Kang; Li, Li-Li; Li, Wei; Wang, Zi-Wei; Gao, Feng-Juan; Hu, Fang-Yuan; Zhang, Sheng-Hai; Qu, Shou-Fang; Huang, Jie; Wang, Lu-Sheng; Wu, Ji-Hong; Chen, Fang.

In: Molecular genetics & genomic medicine, 26.04.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal