title: [Polymorphisms of complement factor genes and age-related macular degeneration in a German population].
abstract: BACKGROUND
  An association of the Tyr402His variant of the complement factor H (CFH) gene with age-related macular degeneration (AMD) has been shown in several Caucasian populations, while studies for an association with other single nucleotide polymorphisms (SNP) of complement system genes have produced inconsistent results. We examined the distribution of several SNPs of complement system genes (CFH, C 2, C 3, factor B) in patients with exsudative AMD and healthy controls.
  
  
  METHODS
  226 patients with exsudative AMD and 179 controls without AMD were included. Genomic DNA was extracted from saliva samples.
  
  
  RESULTS
  A significant association with exsudative AMD was found only for SNP rs1061170 (Y402 H) in the CFH gene. For rs1047286 (P292L) and rs2230199 (R102G) in the C 3 gene, rs547154 (IVS10) and rs9332739 (E318D) in the C 2 gene and rs4151667 (L9 H) in CFB gene, no associations with exsudative AMD were found.
  
  
  CONCLUSIONS
  We have replicated an association of the Y 402 H variant with exsudative AMD in our population. Although variants R 102G, IVS10, E 318D and L 9 H have been shown to be associated with AMD in earlier studies, we could not confirm these findings. The results show that AMD has variable association patterns with rare variants in different populations.
authors.affiliation: Augenärztliche Gemeinschaftspraxis, Augenzentrum Recklinghausen und Zentrum der Augenheilkunde, J-W Goethe Universität Frankfurt am Main. holger.baatz@augenzentrum.org
authors.forename: H
authors.initials: H
authors.lastname: Baatz
authors.forename: L
authors.initials: L
authors.lastname: Poupel
authors.forename: M
authors.initials: M
authors.lastname: Coudert
authors.forename: F
authors.initials: F
authors.lastname: Sennlaub
authors.forename: C
authors.initials: C
authors.lastname: Combadiere
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003165:Complement System Proteins / Q000235:genetics*; D005260:Female; D005819:Genetic Markers / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000453:epidemiology* / Q000235:genetics*; D005858:Germany / Q000453:epidemiology; D006801:Humans; D008268:Macular Degeneration / Q000453:epidemiology* / Q000235:genetics*; D008297:Male; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D015995:Prevalence; D018570:Risk Assessment / Q000379:methods; D012307:Risk Factors
chemical_list: D005819:Genetic Markers; D003165:Complement System Proteins