Csöngei V, Járomi L, Sáfrány E, Sipeky C, Magyari L, Polgár N, Bene J, Sarlós P, Lakner L, Baricza E, Szabó M, Rappai G, Melegh B. Interaction between CTLA4 gene and IBD5 locus in Hungarian Crohn's disease patients.
Int J Colorectal Dis 2011;
26:1119-25. [PMID:
21519805 DOI:
10.1007/s00384-011-1202-z]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/11/2011] [Indexed: 02/04/2023]
Abstract
BACKGROUNDS AND AIMS
The IGR2198a_1 and IGR2096a_1 variants of the IBD5 region were found to be associated with Crohn's disease (CD) in the Hungarian population, while IGR2230a_1 does not seem to confer risk for the disease. In the present study, our aim was to investigate the statistical interaction of these three IBD5 polymorphisms with the +49 A/G substitution within the cytotoxic T lymphocyte antigen-4 (CTLA4) gene, detected previously as neutral gene variant in Hungarian IBD patients.
METHODS
A total of 305 unrelated subjects with CD and 310 healthy controls were genotyped with PCR-RFLP methods.
RESULTS
In contrast with single gene effects, after genotype stratification, the IGR2198a_1 C and IGR2096a_1 T variants were found to confer susceptibility only in subjects with CTLA4 +49 AA genotype (P = 0.008; OR = 1.86 and P = 0.016; OR = 1.74, respectively), for IGR2230a_1 no such effect on disease risk could be demonstrated.
CONCLUSION
Analysis of specific genotype combinations unfolded a possible association between the CTLA4 +49 A/G substitution and two of the observed IBD5 variants with respect to disease risk.
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