CXCL10 and systemic lupus erythematosus: However, in the meta-analysis of five study arms from four studies with available data (n = 897 patients, 122 active SLE patients, 775 inactive SLE patients) [16,17,25,31], serum IP-10 in active SLE patients was significantly higher than inactive patients (MD 356.5 pg/mL, 95% CI 59.6 to 653.4, p = 0.019).