Background Interferon regulatory factor 5 (IRF5) is a transcription factor regulating interferon secretion and was proved to be implicated in the pathogenesis of systemic lupus erythematosus (SLE) in several studies.
The purpose of this case-control study was to investigate whether IRF5 gene polymorphism is involved in the genetic predisposition to SLE in the Algerian population.
Methods IRF5 rs729302 (A/C) polymorphism was analyzed in 120 SLE patients and 98 age and sex matched controls by real time- polymerase chain reaction.
Results Significant association was observed for AA and AC genotypes of IRF5 between patients and healthy subjects (60% vs 73%; 40% vs 27%, p =0.025, respectively).
Patients with SLE had more frequent C allele compared to controls (20% vs 13%, P = 0.041).
However, the allele and genotype frequencies did not show any difference in patients with nephritis in comparison to those without nephritis.
Conclusion The rs729302 C allele and AC genotype can be considered as risk factors for the development of SLE in Algerian patients.
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