Journal of Clinical Immunology

, Volume 28, Issue 3, pp 207–213 | Cite as

IκBα Promoter Polymorphisms in Patients with Systemic Lupus Erythematosus

  • Chia-Hui Lin
  • Shu-Chen Wang
  • Tsan-Teng Ou
  • Ruei-Nian Li
  • Wen-Chan Tsai
  • Hong-Wen Liu
  • Jeng-Hsien Yen
Article

Abstract

To investigate the associations of IκBα gene polymorphisms with the development and clinical manifestations of systemic lupus erythematosus (SLE), 110 patients with SLE and 120 unrelated healthy controls were enrolled in this study. The IκBα −881 A/G, −826 C/T, −550 A/T, −519 C/T, and −297 C/T polymorphisms were determined by the polymerase chain reaction/reaction fragment length polymorphism method. The genotype frequency of IκBα −826 C/T in the patients with SLE was significantly higher than that of the controls (p = 0.003, OR = 2.2, 95% CI = 1.3–3.9). The SLE patients also have significantly higher carriage rate of IκBα −826 T than the controls (p = 0.01, OR = 2.0, 95% CI = 1.2–3.4). We also found that the estimated haplotype frequency of IκBα −881A −826T −550A −519C −297C was significantly increased in the patients with SLE in comparison with that of the controls. This study also demonstrated that the association of IκBα −826 T with SLE was independent of HLA-DR15, which is associated with susceptibility to SLE in Taiwan. Moreover, a synergistic effect could also be found between IκBα −826 T and HLA-DR15. IκBα −826 T is associated with the development of SLE in Taiwan. The IκBα −881A −826T −550A −519C −297C haplotype is also associated with susceptibility to SLE. This study also demonstrated that IκBα -881G was associated with the occurrence of vasculitis in SLE patients. IκBα −550T might be a protective factor for the development of malar rash.

Keywords

IκBα NFκB inhibitor polymorphism systemic lupus erythematosus 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Chia-Hui Lin
    • 1
  • Shu-Chen Wang
    • 2
  • Tsan-Teng Ou
    • 1
  • Ruei-Nian Li
    • 3
  • Wen-Chan Tsai
    • 1
    • 4
  • Hong-Wen Liu
    • 1
    • 4
  • Jeng-Hsien Yen
    • 1
    • 5
  1. 1.Division of Rheumatology, Department of Internal MedicineKaohsiung Medical University HospitalKaohsiung CityTaiwan
  2. 2.Department of Laboratory MedicineKaohsiung Medical University HospitalKaohsiungTaiwan
  3. 3.Faculty of Biomedical Science and Environmental BiologyKaohsiung Medical UniversityKaohsiungTaiwan
  4. 4.College of MedicineKaohsiung Medical UniversityKaohsiungTaiwan
  5. 5.Graduate Institute of Medicine, College of MedicineKaohsiung Medical UniversityKaohsiungTaiwan

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