Fish‐scale collagen peptide showed anti‐inflammatory effects on colitis mice by reducing myeloperoxidase (MPO)‐dependent activation of inflammatory cells, which can also inhibit the activation of the nuclear factor NF‐κB pathway and serum active monocyte chemotactic protein 1 (MCP‐1) (Azuma et al., 2014). Here, NFKB1 is linked to colitis.