title: CFI-rs7356506 is a genetic protective factor for acute anterior uveitis in Chinese patients.
abstract: BACKGROUND
  Complement Factor I (CFI) and the CD46 complement regulator (CD46) play an important role in the complement activation pathways, which is known to affect the development of uveitis. The present study was performed to investigate the association of the CFI and CD46 genes with acute anterior uveitis (AAU).
  
  
  METHODS
  A total of 600 subjects (300 patients with AAU and 300 healthy controls) were recruited for this case-control study. Six CFI single nucleotide polymorphisms (SNP) (rs7356506, rs10029485, rs11726949, rs12512308, rs7438961, rs998538) and four CD46 SNPs (rs12138764, rs2466571, rs2796278, rs7545126) were genotyped using Sequenom MassARRAY technology. Allele and genotype frequencies were compared between patients and controls using the χ(2) test. Analyses were stratified for gender, human leukocyte antigen (HLA)-B27, and ankylosing spondylitis status.
  
  
  RESULTS
  Rs7356506 in the CFI gene was found to be protective against AAU. There was a significant increase in the frequency of the A allele (p=0.003, pc=0.03, OR=0.684, CI 0.534 to 0.876) and AA homozygosity (p=0.004, pc=0.04, OR=0.624, CI 0.452 to 0.862) in AAU patients as compared to controls. Stratified analysis, according to gender and HLA-B27 status for AAU, also revealed the association with CFI-rs7356506. None of the tested SNPs of CD46 were associated with AAU.
  
  
  CONCLUSIONS
  This study has revealed a significant association between AAU and CFI-rs7356506, suggesting that CFI is involved in the pathogenesis of AAU, and that its influence on AAU may differ depending on gender and HLA-B27 status.
authors: The Eye Hospital of Wenzhou Medical University, State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, China.
authors: Yuqin
authors: Y
authors: Wang
authors: The Eye Hospital of Wenzhou Medical University, State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, China.
authors: Xiu-Feng
authors: XF
authors: Huang
authors: Eye Hospital, The First Affiliated Hospital, Harbin Medical University, Harbin, China Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong.
authors: Ming-Ming
authors: MM
authors: Yang
authors: The Eye Hospital of Wenzhou Medical University, State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, China.
authors: Wei-Jun
authors: WJ
authors: Cai
authors: The Eye Hospital of Wenzhou Medical University, State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, China.
authors: Mei-Qin
authors: MQ
authors: Zheng
authors: The Eye Hospital of Wenzhou Medical University, State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, China School of Environmental Science & Public Health, Wenzhou Medical University, Wenzhou, China The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
authors: Guangyun
authors: G
authors: Mao
authors: Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong.
authors: Chi-Pui
authors: CP
authors: Pang
authors: The Eye Hospital of Wenzhou Medical University, State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, China.
authors: Zi-Bing
authors: ZB
authors: Jin
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D044466:Asian People / Q000235:genetics; D016022:Case-Control Studies; D002648:Child; D002681:China; D017244:Complement Factor I / Q000235:genetics*; D005260:Female; D060005:Genotyping Techniques; D006801:Humans; D008297:Male; D051916:Membrane Cofactor Protein / Q000235:genetics; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D014606:Uveitis, Anterior / Q000208:ethnology / Q000235:genetics* / Q000517:prevention & control*
chemical_list: C497857:CD46 protein, human; D051916:Membrane Cofactor Protein; C493611:CFI protein, human; D017244:Complement Factor I
keywords: Genetics; Immunology