ITGAX and systemic lupus erythematosus: All the CXCR5+ CD11c- B cells which are the more frequent among B cell populations, were decreased in SLE patients: DN1 (46.7% vs 68.5%, p = 0.0012), rNAV (92.5% vs 95.8%, p = 0.0171), CXCR5+ CD11c- SWM (56.1% vs 67.3%, p = 0.0029) and CXCR5+ CD11c- USM (71.9% vs 82.8%, p = 0.0484) (Figures 2E–H).