GlycA correlated well with CRP and serum creatinine levels (Figure 2), both in quiescent and active SLE patients (ρ = 0.57 and 0.36, both p values <10−3 and ρ = 0.45 and 0.25, p values <0.01 and 0.013, for CRP and creatinine respectively). This evidence concerns the gene CRP and systemic lupus erythematosus.