Replication of the genetic effects of IFN regulatory factor 5 (IRF5) on systemic lupus erythematosus in a Korean populationopen access
- Authors
- Shin, Hyoung Doo; Sung, Yoon Kyoung; Choi, Chan Bum; Lee, Soo Ok; Lee, Hye Won; Bae, Sang Cheol
- Issue Date
- Mar-2007
- Publisher
- BIOMED CENTRAL LTD
- Citation
- ARTHRITIS RESEARCH & THERAPY, v.9, no.2, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- ARTHRITIS RESEARCH & THERAPY
- Volume
- 9
- Number
- 2
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/172327
- DOI
- 10.1186/ar2152
- ISSN
- 1478-6354
- Abstract
- Recently, two studies provided convincing evidence that IFN regulatory factor 5 (IRF5) gene polymorphisms are significantly associated with systemic lupus erythematosus (SLE) in several white populations. To replicate the association with SLE in an Asian population, we examined the genetic effects in our SLE cohort from a Korean population. A total of 1,565 subjects, composed of 593 cases and 972 controls, were genotyped using the TaqMan(R) (Applied Biosystems, Foster City, CA, USA) method. The genetic effects of polymorphisms on the risk of SLE were evaluated using chi(2) tests and a Mantel-Haenszel meta-analysis. Statistical analysis revealed results in the Korean population were similar to the previous reports from white populations. The rs2004640 T allele had a higher frequency in SLE cases (0.385) than controls (0.321; odds ratio (OR) = 1.32, P = 0.0003). In combined analysis, including all seven independent cohorts from the three studies so far, robust and consistent associations of the rs2004640 T allele with SLE were observed. The estimate of risk was OR = 1.44 (range, 1.34-1.55), with an overall P = 1.85 x 10(-23) for the rs2004640 T allele. The haplotype (rs2004640T-rs2280714T) involved in both the alternative splice donor site and the elevated expression of IRF5 also had a highly significant association with SLE (pooled, P = 2.11 x 10(-16)). Our results indicate that the genetic effect on the risk of SLE mediated by IRF5 variants can be generally accepted in both white and Asian populations.
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