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  • Title: Association between the interferon-γ +874 T/A polymorphism and susceptibility to systemic lupus erythematosus and rheumatoid arthritis: A meta-analysis.
    Author: Lee YH, Song GG.
    Journal: Int J Immunogenet; 2022 Dec; 49(6):365-371. PubMed ID: 36031708.
    Abstract:
    We aimed to determine whether the interferon (IFN)-γ +874 T/A polymorphism (rs2430561) is associated with susceptibility to systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). A meta-analysis was conducted to assess the association between the IFN-γ +874 T/A polymorphism and SLE or RA using allele contrast, homozygous contrast, recessive, and dominant models. A total of nine studies (six on SLE and three on RA), involving 1839 patients and 2272 controls, were included in the meta-analysis. The meta-analysis revealed a significant association between SLE and the TT genotype of the IFN-γ +874 T/A polymorphism (odds ratio [OR] = 0.751, 95% confidence interval [CI] = 0.634-0.899, p = .001), and stratification by ethnicity indicated an association between the IFN-γ +874 TT genotype and the Asian population. The analysis also revealed a significant association between SLE and the TT + TA genotype of the IFN-γ +874 T/A polymorphism in Arab populations (OR = 1.598, 95% CI = 1.053-2.425, p = .028). However, no association between the IFN-γ +874 T/A polymorphism and RA was found using allele contrast, recessive, dominant or homozygous contrast models in all study subjects and ethnic groups. This meta-analysis demonstrated that the IFN-γ +874 T/A polymorphism is associated with susceptibility to SLE in Asian and Arab populations.
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