IL10 and systemic lupus erythematosus: Compared to healthy controls, higher IL10 expression was observed in patients with SLE carrying the same genotype at both mRNA (genotype AA: P = 1.3×10−4, AG: P = 4.3×10−4, GG: P = 3.9×10−5, cases vs. controls in t test) and protein (AA: P = 4.6×10−4, AG: P = 4.9×10−6, GG: P = 0.047) levels (Figure 2), probably due to the activated immune status of SLE patients.