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Title: Toll-like receptor gene polymorphisms are associated with allergic rhinitis: a case control study
Authors: Nilsson, D.
Andiappan, A.K.
Halldén, C.
De Yun, W.
Säll, T.
Tim, C.F. 
Cardell, L.-O.
Keywords: Allergic rhinitis
Toll-like receptor
Issue Date: 2-Aug-2012
Citation: Nilsson, D., Andiappan, A.K., Halldén, C., De Yun, W., Säll, T., Tim, C.F., Cardell, L.-O. (2012-08-02). Toll-like receptor gene polymorphisms are associated with allergic rhinitis: a case control study. BMC Medical Genetics 13 : -. ScholarBank@NUS Repository.
Abstract: Background: The Toll-like receptor proteins are important in host defense and initiation of the innate and adaptive immune responses. A number of studies have identified associations between genetic variation in the Toll-like receptor genes and allergic disorders such as asthma and allergic rhinitis. The present study aim to search for genetic variation associated with allergic rhinitis in the Toll-like receptor genes.Methods: A first association analysis genotyped 73 SNPs in 182 cases and 378 controls from a Swedish population. Based on these results an additional 24 SNPs were analyzed in one Swedish population with 352 cases and 709 controls and one Chinese population with 948 cases and 580 controls.Results: The first association analysis identified 4 allergic rhinitis-associated SNPs in the TLR7-TLR8 gene region. Subsequent analysis of 24 SNPs from this region identified 7 and 5 significant SNPs from the Swedish and Chinese populations, respectively. The corresponding risk-associated haplotypes are significant after Bonferroni correction and are the most common haplotypes in both populations. The associations are primarily detected in females in the Swedish population, whereas it is seen in males in the Chinese population. Further independent support for the involvement of this region in allergic rhinitis was obtained from quantitative skin prick test data generated in both populations.Conclusions: Haplotypes in the TLR7-TLR8 gene region were associated with allergic rhinitis in one Swedish and one Chinese population. Since this region has earlier been associated with asthma and allergic rhinitis in a Danish linkage study this speaks strongly in favour of this region being truly involved in the development of this disease. © 2012 Nilsson et al.; licensee BioMed Central Ltd.
Source Title: BMC Medical Genetics
ISSN: 14712350
DOI: 10.1186/1471-2350-13-66
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