MX1 and systemic lupus erythematosus: Furthermore, PBMC IFIT3 (Figure S3A; mean HC 47ng/mL, P = 0.04), MX1 (Figure S3B, mean HC 90ng/mL, P = 0.02), TOMM40 (Figure S3C; mean SLE 56ng/mL, mean RA 35ng/mL, P < 0.0001), and STAT1 (Figure S3D, mean HC 4,214pg/mL, P = 0.02) levels were significantly elevated in SLE patients compared to those in HC individuals.