In a population of 200 SLE patients and 50 controls, it was found that IL-6 levels were statistically significantly higher in patients than in controls and that serum IL-6 levels were positively correlated with CRP, fibrinogen, and erythrocyte sedimentation rate and negatively correlated with hemoglobin and lymphocytes [111]. The gene discussed is IL6; the disease is systemic lupus erythematosus.