Meta-analysis of the studies evaluating the efficacy of epratuzumab. (A) BILAG-based Combined Lupus Assessment response, (B) BILAG index score and (C) Systemic Lupus Erythematosus Disease Activity Index 2000 score. SD, standard deviation; M-H, Mantel-Haenszel; BILAG, British Isles Lupus Assessment Group; CI, confidence intervals.