In both RA and SLE, we noted significant correlations between the MFI of CD11b in samples incubated without mAbs and that in samples incubated with RTX (r2 = 0.81, 0.82, respectively) whereas significant correlation for OBZ was noted in SLE (r2 = 0.81), but not RA (Fig. 5B). This evidence concerns the gene ITGAM and systemic lupus erythematosus.