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Variants of OCTN1-2 cation transporter genes are associated with both Crohn's disease and ulcerative colitis.

Abstract：

BACKGROUND:Two variants in the organic cation transporter gene cluster have been recently reported to confer susceptibility to Crohn's disease (CD). AIM:To investigate these variants in CD and ulcerative colitis (UC), and their interaction with CARD15 gene and correlation to clinical subphenotypes. METHODS:Case-control association analysis was performed in 899 patients (444 CD and 455 UC) and 611 controls. The organic cation transporter gene cluster single nucleotide polymorphisms G207G-->C and 1672C-->T, the IGR2198a_1 single nucleotide polymorphism in the IBD5 locus, and the R702W, G908R and L1007finsC variants of CARD15 gene were genotyped by ABI-7700, restriction fragment length polymorphic analysis and multiplex pyrosequencing, respectively. RESULTS:The 1672TT and -207CC genotype frequencies were increased in both CD (OR = 1.5, P = 0.011; OR = 1.6, P = 0.002), and UC (OR = 1.5, P = 0.017; OR = 1.4, P = 0.033), respectively. Compared with controls, the TC haplotype frequency was increased in both CD (36% vs. 44%, P < or = 0.01) and UC (36% vs. 45%, P < or = 0.01). The frequency of the TC haplotype was 43% in CARD15-positive and 44% in CARD15-negative CD, respectively. Similar results were found in UC. In CD a significant association of the TC haplotype was found with presence of perianal fistulae (P = 0.007) and steno-fistulizing behaviour (P = 0.037). In UC, the TC haplotype was more frequent in patients with more extensive disease (P = 0.015), and those on immunosuppressives (P = 0.004). CONCLUSIONS:Organic cation transporter gene cluster variants may confer susceptibility to both CD and UC, and the TC haplotype may influence some clinical features of IBD, but does not interact with CARD15 variants.

journal_name

Aliment Pharmacol Ther

journal_title

Alimentary pharmacology & therapeutics

authors

Palmieri O,Latiano A,Valvano R,D'Incà R,Vecchi M,Sturniolo GC,Saibeni S,Peyvandi F,Bossa F,Zagaria C,Andriulli A,Devoto M,Annese V

doi

10.1111/j.1365-2036.2006.02780.x

subject

Has Abstract

pub_date

2006-02-15 00:00:00

pages

497-506

issue

eissn

0269-2813

issn

1365-2036

pii

APT2780

journal_volume

pub_type

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Variants of OCTN1-2 cation transporter genes are associated with both Crohn's disease and ulcerative colitis.