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Shengping Hou1, Na Li2, Xingyun Liao1

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Genetic and epigenetic factors contribute to uveitis, a vision-threatening inflammatory eye disease. Research identifies key genes and explores new technologies to uncover pathogenic risks and develop future treatments.

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Area of Science:

  • Ophthalmology
  • Immunology
  • Genetics

Background:

  • Uveitis is a vision-threatening intraocular inflammatory disease.
  • Vogt-Koyanagi-Harada (VKH) disease and Behcet's disease (BD) are common non-infectious uveitis types.
  • Genetic and epigenetic factors, alongside immune dysregulation, are implicated in uveitis pathogenesis.

Purpose of the Study:

  • To review the genetic and epigenetic factors associated with uveitis.
  • To highlight the role of HLA genes and other candidate genes in VKH and BD.
  • To discuss the impact of newer technologies in uveitis research.

Main Methods:

  • Review of candidate association studies for uveitis.
  • Analysis of genome-wide association studies (GWAS) for uveitis predisposition.
  • Examination of copy number variants (CNVs) and epigenetic modifications (DNA methylation, ncRNAs, m6A).

Main Results:

  • Strong associations found between HLA genes (HLA-DR4, DRB1/DQA1 for VKH; HLA-B51 for BD) and uveitis.
  • Identified candidate genes (SUMO4, MCP-1, CTLA4) and GWAS-identified genes (IL23R/C1orf141, STAT4, ADO/ZNF365/EGR2).
  • CNVs (IL17F, IL23A, C4A) and epigenetic factors (DNA methylation, ncRNAs) are linked to uveitis development.

Conclusions:

  • Understanding genetic and epigenetic mechanisms is crucial for uveitis research.
  • New technologies like whole exome/genome sequencing and m6A analysis can discover novel risk genes.
  • This knowledge may lead to new therapeutic targets and strategies for uveitis.