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  • Title: [Association of inflammatory bowel disease with the polymorphisms and haplotypes of fucosyltransferase 3 gene].
    Author: Guo M, Min X, Xia X, Lin X, Jiang L, Jin J, Ding R, Jiang Y.
    Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2015 Dec; 32(6):849-54. PubMed ID: 26663064.
    Abstract:
    OBJECTIVE: To assess the association of inflammatory bowel disease with polymorphisms and haplotypes of Fucosyltransferase 3 (FUT3) gene. METHODS: A total of 389 patients with ulcerative colitis (UC), 274 patients with Crohn's disease (CD), and 492 controls were collected. Three single nucleotide polymorphisms (SNPs) of the FUT3 gene (rs28362459, rs3745635 and rs3894326) were determined by direct sequencing. Linkage disequilibrium and haplotype analysis were performed using a Haploview 4.2 software. RESULTS: Compared with the controls, the allele and genotype distributions of FUT3 gene did not significantly differ between the UC and CD groups (all P>0.05). By stratified analysis, the mutant allele (A) and genotype (GA+AA) of the FUT3 gene (rs3745635) were significantly increased in the UC group with distal colitis compared with the controls (P<0.01, P<0.05, respectively). The mutant allele (G) and genotype (TG+GG) of the FUT3 gene (rs28362459) as well as the mutant allele (A) of FUT3(rs3745635) were significantly increased in patients with ileocolonic CD and ileal CD as compared with the controls (P<0.05, P<0.01, P<0.05, respectively). The frequency of mutant allele (G) of FUT3(rs28362459) was higher in stricturing CD patients than in the controls (P<0.05). In addition, the three polymorphic loci of FUT3 gene were shown in complete linkage disequilibrium [rs3894326/rs3745635 (D'=1.0, r2=0.017), rs3894326/rs28362459 (D'=0.937, r2=0.311), rs3745635/rs28362459 (D'=0.944, r2=0.448)]. However, the frequency of each haplotype was not significantly different between the UC and CD groups compared with the controls (all P>0.05). CONCLUSION: FUT3 (rs3745635) mutation may increase the risk of distal colitis. FUT3 (rs28362459 and rs3745635) mutations may engender the increased risk of ileocolonic and ileal CD. Moreover, FUT3 (rs28362459) polymorphism may influence the incidence of stricturing CD.
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