ChIP‐Atlas analyses revealed that the AP‐1 binding motif was present in nearly half of IKZF1‐target genes and that c‐FOS, a member of the AP‐1 family, was actually co‐localized with IKZF1 at histone H3K27‐acetylated enhancer/promoter regions of these genes in MM cells (Figure S1 and Figure 2B). This evidence concerns the gene FOS and Miyoshi myopathy.