Anti-HMGB1 mAb treatment of MRL/lpr mice does not affect plasma levels of proinflammatory cytokines. Plasma levels of the cytokines IL-6 (A), IL-17A (B), IFN-α (C) and TNF-α (D) were measured by multiplex in MRL/MPJ and MRL/lpr mice at wks 7, 9, 13 and 17. Box and whiskers plot, median and interquartile range are shown for n = 6–8 mice per group. Separate dots indicate outliers.