TNFSF15 is an independent predictor for the development of Crohn's disease-related complications in Koreans

摘要

Background: Crohn's disease (CD) is a chronic idiopathic inflammatory bowel disease involving the whole gastrointestinal tract. TNFSF15 has been proved as a susceptibility gene for CD, but there are few reports about the association between TNFSF15 single nucleotide polymorphisms (SNPs) and the clinical course of CD. Aim: To investigate the association between TNFSF15 genotypes and the clinical course of CD in Koreans. Methods: A total of 906 CD patients having TNFSF15 genotype data and clinical information were recruited from CD registry database of a tertiary referral center. The association between five TNFSF15 SNPs (rs4574921, rs3810936, rs6478108, rs6478109, and rs7848647) and various clinical parameters including stricture, non-perianal penetrating complications, bowel resection, and reoperation was investigated. Results: Among the five SNPs, rs6478108 CC genotype was associated with the development of stricture and non-perianal penetrating complications during follow-up (HR for stricture. =. 1.706, 95% confidence interval 1.178-2.471, P=. 0.005; HR for non-perianal penetrating complications. =. 1.667, 95% confidence interval 1.127-2.466, P=. 0.010), and rs4574921 CC genotype was associated with the development of perianal fistula (HR. =. 2.386, 95% confidence interval 1.204-4.727, P=. 0.013) by multivariate analysis. However, there was no significant association of cumulative operation and reoperation rate with 5 SNPs of TNFSF15. Conclusion: In Korean patients with CD, non-risk allele homozygotes of TNFSF15 SNPs rs6478108 and rs4574921 are independent genetic predictive factors for the development of strictureson-perianal penetrating complications and perianal fistula, respectively.