Interestingly, circulating amounts of sBLyS in SLE patients correlated positively with mBLyS expression on B cells (ρ = 0.273, p = 0.025) and neutrophils (ρ = 0.329, p = 0.007) and the same tendency was observed with IFNAR1 (B cells: ρ = 0.227, p = 0.064; neutrophils: ρ = 0.273, p = 0.026). This evidence concerns the gene IFNAR1 and systemic lupus erythematosus.