TNFalpha and IL10 SNPs act together to predict disease behaviour in Crohn's disease.

Abstract:

BACKGROUND:The cytokines tumour necrosis factor (TNF)alpha and interleukin (IL)10 have been implicated in the pathogenesis of Crohn's disease (CD), with increased concentrations reported in patients with active disease. However, limited data exist on their effects on disease phenotype in the same population. Certain single nucleotide polymorphisms (SNPs) within the promoter region of the IL10 (-1082G/A, -592C/A) and TNFalpha (-308G/A, -857C/T) genes have been associated with altered levels of circulating IL10 and TNFalpha. METHODS:We conducted an Australian based case-control study (304 CD patients; 231 healthy controls) of these four SNPs. Further investigation of two SNPs was conducted using a logistic regression analysis. RESULTS:We identified a possible association of both IL10 SNPs and TNFalpha-857 with CD. Further investigation of a relationship with disease severity showed a significant association of higher producing IL10-1082G and TNFalpha-857C alleles with stricturing behaviour, which was strongest when these alleles were combined and persisted after multivariate analysis (p = 0.007; odds ratio (OR) 2.37, 95% CI 1.26 to 4.43). In addition, the TNFalpha-857CC genotype was independently associated with familial CD (p = 0.03; OR 3.12; 95% CI 1.15 to 8.46). CONCLUSION:These two SNPs may help to predict disease behaviour in CD patients, which may be clinically useful in shaping treatment of the disease at an earlier stage.

journal_name

J Med Genet

authors

Fowler EV,Eri R,Hume G,Johnstone S,Pandeya N,Lincoln D,Templeton D,Radford-Smith GL

doi

10.1136/jmg.2004.027425

keywords:

subject

Has Abstract

pub_date

2005-06-01 00:00:00

pages

523-8

issue

6

eissn

0022-2593

issn

1468-6244

pii

42/6/523

journal_volume

42

pub_type

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