title: [Identification of gene-gene interactions related to the etiology of complex disease: a multifactor dimensionality reduction-genotype pedigree disequilibrium test].
abstract: To introduce the application of a multifactor dimensionality reduction-genotype pedigree disequilibrium test (MDR-PDT) for detecting gene-gene interactions in the etiology of complex disease. A brief overview on the basic theory, implementing steps and features of MDR-PDT were described, and a practical research case was demonstrated to application of MDR-PDT in nuclear family studies. The MDR-PDT approach was the extension or development of conventional MDR method which could be used for detecting gene-gene interactions in families of diverse structure.
  
  
  CONCLUSIONS
  MDR-PDT was a new nonparametric and model-free method which might use additional family members in the nuclear families and had a good power to identify gene-gene interactions.
authors.affiliation: Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100083, China.
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.forename: Xun
authors.initials: X
authors.lastname: Tang
authors.forename: Da-fang
authors.initials: DF
authors.lastname: Chen
authors.forename: Yong-hua
authors.initials: YH
authors.lastname: Hu
mesh_terms: D004843:Epistasis, Genetic; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D015810:Linkage Disequilibrium; D010375:Pedigree; D018709:Statistics, Nonparametric