title: Association of elastin gene polymorphism to age-related macular degeneration and polypoidal choroidal vasculopathy.
abstract: OBJECTIVE
  To see if there is an association in Japanese between elastin gene (ELN) polymorphisms and neovascular age-related macular degeneration (AMD) or its subtypes, typical AMD (tAMD) and polypoidal choroidal vasculopathy (PCV).
  
  
  METHODS
  The authors genotyped five single nucleotide polymorphisms (SNPs), rs2301995, rs2856728, rs868005, rs884843, and rs13239907, at Kyoto University and Saitama Medical University. A case-control study was performed on 1296 patients with AMD and 478 controls.
  
  
  RESULTS
  A statistically significant association was detected between the rs2301995 SNP and AMD (P = 0.018). Furthermore, subtype analysis revealed a significant association of rs2301995 with tAMD (P = 0.0018), but not with PCV. The genotype distribution of rs2301995 also differed significantly between tAMD and PCV (P = 0.00030). The trend in genotype distribution of rs2301995 was similar between the Kyoto and the Saitama studies. The A allele frequency was higher in tAMD, whereas it was similar in PCV and in controls, which is opposite to that reported in a previous study that the A allele frequency is higher in PCV, whereas it is similar in tAMD and in controls. Haplotype analysis also showed that the ELN polymorphism is significantly associated with tAMD (P = 0.0055), but not with PCV.
  
  
  CONCLUSIONS
  ELN is associated with AMD in Japanese. Furthermore, the findings suggest that ELN is a susceptibility gene for tAMD but not for PCV, which is opposite to that reported in a previous study that ELN is the susceptibility gene for PCV but not for tAMD.
authors: Department of Ophthalmology, Kyoto University Graduate School of Medicine, Kyoto, Japan. yamashro@kuhp.kyoto-u.ac.jp
authors: Kenji
authors: K
authors: Yamashiro
authors: Keisuke
authors: K
authors: Mori
authors: Isao
authors: I
authors: Nakata
authors: Takashi
authors: T
authors: Tsuchihashi
authors: Kuniko
authors: K
authors: Horie-Inoue
authors: Hideo
authors: H
authors: Nakanishi
authors: Akitaka
authors: A
authors: Tsujikawa
authors: Masaaki
authors: M
authors: Saito
authors: Tomohiro
authors: T
authors: Iida
authors: Ryo
authors: R
authors: Yamada
authors: Fumihiko
authors: F
authors: Matsuda
authors: Satoshi
authors: S
authors: Inoue
authors: Takuya
authors: T
authors: Awata
authors: Shin
authors: S
authors: Yoneya
authors: Nagahisa
authors: N
authors: Yoshimura
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People / Q000235:genetics / Q000706:statistics & numerical data; D016022:Case-Control Studies; D020256:Choroidal Neovascularization / Q000208:ethnology* / Q000235:genetics*; D004549:Elastin / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease / Q000208:ethnology / Q000235:genetics; D006239:Haplotypes; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008268:Macular Degeneration / Q000208:ethnology* / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics
chemical_list: D004549:Elastin