Feb 26, 2011

Meta-analysis of published studies identified eight additional common susceptibility loci for Crohn's disease and ulcerative colitis

Inflammatory Bowel Diseases
Junji UmenoMichiaki Kubo

Abstract

Both ulcerative colitis (UC) and Crohn's disease (CD) have a complex etiology involving multiple genetic and environmental factors. Many genome-wide association studies (GWAS) and subsequent replication studies revealed that both diseases share some of the susceptibility loci; however, common genetic factors for both diseases are not fully elucidated. This study is aimed to identify the common genetic factors for CD and UC by a meta-analysis of published studies. We first reviewed the 10 GWAS for CD to select candidate single nucleotide polymorphisms (SNPs). Next, we performed a PubMed literature search up to June 30, 2010 and carried out a systemic review of published studies that examined the association of CD susceptibility loci in UC patients. Meta-analysis was carried out using the inverse variance-weighted method or the DerSimonian-Laird method after estimating the heterogeneity among the studies. The data for highly linked SNPs were combined. Finally, we performed a meta-analysis of 43 published studies in 45 SNPs located at 33 loci by using a total of 4852 to 31,125 subjects. We confirmed the association of 17 reported common susceptibility loci. Moreover, we found associations at eight additional loci: GCKR, ATG16L1, C...Continue Reading

Mentioned in this Paper

CDKAL1 gene
Genome-Wide Association Study
Pathogenic Aspects
MAP4K5 gene
IIeocolitis
Meta-Analysis (Publications)
Pathogenesis
PTPN2 gene
IL23R gene
ATG16L1

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