JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Association of NOD2 (CARD 15) genotype with clinical course of Crohn's disease: a cohort study.
Lancet 2002 May 12
BACKGROUND: Crohn's disease is a heterogeneous disorder for which NOD2 (CARD 15) has been identified as a susceptibility gene. We investigate the relation between NOD2 genotype and phenotypic characteristics of patients with Crohn's disease.
METHODS: Hypotheses about the relation between NOD2 genotype and Crohn's disease phenotype were generated retrospectively from a group of 446 German patients with this disorder. Positive findings (p<0.10) were verified in prospectively established cohorts of 106 German and 55 Norwegian patients with Crohn's disease. All patients were genotyped for the main coding mutations in NOD2, denoted SNP8, SNP12, and SNP13, with Taqman technology.
FINDINGS: In the retrospective cohort, six clinical characteristics showed noteworthy haplotype association: fistulising, ileal, left colonic and right colonic disease, stenosis, and resection. In the German prospective cohort, these haplotype associations could be replicated for ileal (p=0.006) and right colonic disease (p < or =0.001). A similar trend was noted in the Norwegian patients.
INTERPRETATION: We recorded a distinct relation between NOD2 genotype and phenotype of Crohn's disease. Test strategies with NOD2 variations to predict the clinical course of Crohn's disease could lead to the development of new therapeutic paradigms.
METHODS: Hypotheses about the relation between NOD2 genotype and Crohn's disease phenotype were generated retrospectively from a group of 446 German patients with this disorder. Positive findings (p<0.10) were verified in prospectively established cohorts of 106 German and 55 Norwegian patients with Crohn's disease. All patients were genotyped for the main coding mutations in NOD2, denoted SNP8, SNP12, and SNP13, with Taqman technology.
FINDINGS: In the retrospective cohort, six clinical characteristics showed noteworthy haplotype association: fistulising, ileal, left colonic and right colonic disease, stenosis, and resection. In the German prospective cohort, these haplotype associations could be replicated for ileal (p=0.006) and right colonic disease (p < or =0.001). A similar trend was noted in the Norwegian patients.
INTERPRETATION: We recorded a distinct relation between NOD2 genotype and phenotype of Crohn's disease. Test strategies with NOD2 variations to predict the clinical course of Crohn's disease could lead to the development of new therapeutic paradigms.
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