Association between IFNA genotype and the risk of systemic lupus erythematosus

Systemic lupus erythematosus (SLE) is characterized by multisystem inflammation and production of autoantibodies, which can generate immune complexes and may cause tissue damage through the recognition of an autoantigen. Although many factors have been proposed, such as genetic factors, environmental factors, hormonal action, viruses, and dysregulation of cytokine production, the cause of this disease is not well understood. It has been reported that the levels of interferon (IFN)- in the sera of some SLE patients are elevated and that IFN- induces maturation of monocytes into highly active antigen-presenting dendritic cells (DCs). We analyzed the association between IFN- genotype and the risk of SLE to clarify whether IFN- plays a central role in susceptibility to SLE. The results showed that no IFN- genotype was significantly associated with the risk of SLE.