NFKB1 and systemic lupus erythematosus: In contrast to the expected NF-κB-mediated transcriptional increases, CpG occupation of TLR9 in Tnip1 −/− bone marrow-derived macrophages [96], strikingly activates C/EBPβ-regulated promoters including that of proinflammatory SLE severity-correlating S100A8 [97].