Serum TRAIL levels and serum G-CSF and sFc γ IIIR levels. (A) Serum TRAIL levels in SLE patients with neutropenia were significantly higher than in SLE patients without neutropenia and healthy volunteers (*P < .01, Bonferroni/Dunn with one-way factorial ANOVA Bars indicate mean value). (B) Serum TRAIL levels showed a significant negative correlation with absolute neutrophil counts (P < .01, r = –0.712, Pearson correlation coefficient test). (C) Serum TRAIL levels showed a significant positive correlation with serum G-CSF levels (P < .01, r = 0.689, Pearson correlation coefficient test). (D) There was no significant correlation between serum TRAIL levels and serum sFc γ IIIR levels. Sloping lines indicate simple regression in each set of data (B-D)