title: Impact of the 1425G/A polymorphism of PRKCH on the recurrence of ischemic stroke: Fukuoka Stroke Registry.
abstract: BACKGROUND
  Epidemiologic studies have elucidated that the 1425G/A single-nucleotide polymorphism (rs2230500 single-nucleotide polymorphism) in exon 9 of the protein kinase C eta (PRKCH) gene is an independent risk factor for ischemic stroke: stroke incidence is significantly higher in the subjects with AA than those with AG or GG genotype. However, its impact on stroke recurrence remains unknown. The aim of the present study was to clarify whether the polymorphism is also a risk factor for recurrent stroke in patients with acute ischemic stroke.
  
  
  METHODS
  We enrolled 2418 consecutive patients with acute and first-ever ischemic stroke and investigated the 1425G/A polymorphism of PRKCH. Patients were followed up for a median of 733 days. The association between the polymorphism and stroke recurrence was investigated using the Cox proportional hazard model.
  
  
  RESULTS
  In the enrolled patients, the GG genotype was the most prevalent (63%), followed by AG (32%) and AA genotypes (5%). Recurrent stroke occurred in 302 patients during the follow-up period. Kaplan-Meier analyses revealed no difference in the rate of recurrent stroke after first-ever stroke among the 3 genotypes. The incidence of recurrent stroke was not significantly different in patients with AA (hazard ratio [HR] 1.02, 95% confidence interval .59-1.64, P=.94) or AG (HR .89, 95% confidence interval .69-1.14, P=.36) genotypes compared with those with the GG genotype after adjusting for multiple confounders.
  
  
  CONCLUSIONS
  The 1425G/A polymorphism in PRKCH is not a significant predictor of stroke recurrence in patients with acute ischemic stroke during a 2-year follow-up period.
authors.affiliation: Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka. Electronic address: rymatsuo@intmed2.med.kyushu-u.ac.jp.
authors.forename: Ryu
authors.initials: R
authors.lastname: Matsuo
authors.affiliation: Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Ago
authors.affiliation: Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
authors.forename: Jun
authors.initials: J
authors.lastname: Hata
authors.affiliation: Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
authors.forename: Junya
authors.initials: J
authors.lastname: Kuroda
authors.affiliation: Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Wakisaka
authors.affiliation: Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sugimori
authors.affiliation: Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
authors.forename: Takanari
authors.initials: T
authors.lastname: Kitazono
authors.affiliation: Department of Health Care Administration and Management, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kamouchi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D002545:Brain Ischemia / Q000235:genetics*; D005260:Female; D005500:Follow-Up Studies; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011493:Protein Kinase C / Q000235:genetics*; D012008:Recurrence; D012042:Registries; D012307:Risk Factors; D020521:Stroke / Q000235:genetics*
chemical_list: C081975:protein kinase C eta; D011493:Protein Kinase C
keywords: Ischemic stroke; protein kinase C eta; recurrence; risk factor; single-nucleotide polymorphism