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IL-23 Receptor Gene rs7517847 and rs1004819 SNPs in Ulcerative Colitis

Author(s): Mohammad Mahdi Hayatbakhsh | Mohammad Javad Zahedi | Mohsen Shafiepour | Amin Reza Nikpoor | Mojgan Mohammadi

Journal: Iranian Journal of Immunology
ISSN 1735-1383

Volume: 9;
Issue: 2;
Start page: 128;
Date: 2012;
Original page

Keywords: IL-23R | rs7517847 | rs1004819 | Ulcerative Colitis

Background: Crohn’s disease (CD) and ulcerative colitis (UC) are two major clinical presentations of inflammatory bowel disease (IBD). Many novel candidate genes have been found to be associated with increased risk for IBD. Recently IL-23 receptor gene is identified as an IBD associated gene in genome-wide studies. Objective: To ascertain whether rs7517847 and rs1004819 SNPs in the IL-23 receptor gene are associated with UC in our population in Kerman, south east of Iran. Methods: A total of 85 patients with UC and 100 healthy controls enrolled in our study. Endoscopic procedure was performed for all patients to determine their disease severity. IL-23 receptor genotyping at positions rs7517847 and rs1004819 was done by PCR-RFLP technique. Results: The results of this study showed no association between the studied polymorphisms in the IL-23 receptor gene and UC in our population. However, we found a significant association between rs7517847 gene polymorphism in IL-23 receptor and two important clinical variables including blood in stool and bowel movements in UC patients. Conclusion: The rs7517847 gene polymorphism in IL-23R may be related to the presence of blood in stool and bowel movements in patients with UC. Further functional analysis with other known IL-23 receptor genotypes and/or other candidate genes is necessary to confirm any genetic association with UC in our population.

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