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  • Title: A NFKB1 promoter polymorphism is involved in susceptibility to ulcerative colitis.
    Author: Borm ME, van Bodegraven AA, Mulder CJ, Kraal G, Bouma G.
    Journal: Int J Immunogenet; 2005 Dec; 32(6):401-5. PubMed ID: 16313306.
    Abstract:
    Nuclear factor kappaB (NF-kappaB) designates a group of critical transcription factors involved in a variety of immunologic and/or inflammatory processes. Conceivably, genes involved in the NF-kappaB pathway make interesting candidate genes for chronic inflammatory disorders, including the inflammatory bowel diseases (IBD), Crohn's disease (CD) and ulcerative colitis (UC). In two mouse models of colitis, strong linkage has been observed with a locus on chromosome 3 that harbours the Nfkb1 gene. In addition, a polymorphism in the promoter region of the human NFKB1 gene was found to be associated with susceptibility to UC. In this study, we searched to confirm this previously found association in IBD in a different population. Allele and genotype frequencies of the -94 ins/delATTG polymorphism were determined in 266 unrelated Dutch Caucasian IBD patients (127 UC, 139 CD), and 155 matched healthy controls. The allele frequency of the deletion was significantly higher in UC patients (P = 0.019), but not in CD patients, compared to healthy controls, and the UC patients homozygous for the -94 ATTG deletion had a younger age of onset. Our findings confirm the previously found association between this polymorphism and susceptibility to UC in an independent study population and adds further evidence for the role of this gene in disease susceptibility.
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