title: Association of Common Genetic Variants in Mitogen-activated Protein Kinase Kinase Kinase Kinase 4 with Type 2 Diabetes Mellitus in a Chinese Han Population.
abstract: BACKGROUND
  A study has identified several novel susceptibility variants of the mitogen-activated protein kinase kinase kinase kinase 4 (MAP4K4) gene for type 2 diabetes mellitus (T2DM) within the German population. Among the variants, five single nucleotide polymorphisms (SNPs) of MAP4K4 (rs1003376, rs11674694, rs2236935, rs2236936, and rs6543087) showed significant association with T2DM or diabetes-related quantitative traits. We aimed to evaluate whether common SNPs in the MAP4K4 gene were associated with T2DM in the Chinese population.
  
  
  METHODS
  Five candidate SNPs were genotyped in 996 patients newly diagnosed with T2DM and in 976 control subjects, using the SNPscan™ method. All subjects were recruited from the Second Affiliated Hospital, Harbin Medical University from October 2010 to September 2013. We evaluated the T2DM risk conferred by individual SNPs and haplotypes using logistic analysis, and the association between the five SNPs and metabolic traits in the subgroups.
  
  
  RESULTS
  Of the five variants, SNP rs2236935T/C was significantly associated with T2DM in this study population (odds ratio = 1.293; 95% confidence interval: 1.034-1.619, P= 0.025). In addition, among the controls, rs1003376 was significantly associated with an increased body mass index (P = 0.045) and homeostatic model assessment-insulin resistance (P = 0.037).
  
  
  CONCLUSIONS
  MAP4K4 gene is associated with T2DM in a Chinese Han population, and MAP4K4 gene variants may contribute to the risk toward the development of T2DM.
authors.affiliation: Department of Endemic Disease, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, China.
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Li
authors.affiliation: Department of Endemic Disease, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Qiao
authors.affiliation: Department of Endemic Disease, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, China.
authors.forename: Hui-Xin
authors.initials: HX
authors.lastname: Tong
authors.affiliation: Department of Endemic Disease, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, China.
authors.forename: Tian-Wei
authors.initials: TW
authors.lastname: Zhuang
authors.affiliation: Department of Endemic Disease, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, China.
authors.forename: Tong-Tong
authors.initials: TT
authors.lastname: Wang
mesh_terms: D000328:Adult; D044466:Asian People; D003924:Diabetes Mellitus, Type 2 / Q000201:enzymology* / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics; D005838:Genotype; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins / Q000235:genetics*; D015810:Linkage Disequilibrium / Q000235:genetics; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics; D017346:Protein Serine-Threonine Kinases / Q000235:genetics*
chemical_list: D047908:Intracellular Signaling Peptides and Proteins; C117090:MAP4K4 protein, human; D017346:Protein Serine-Threonine Kinases