Fibronectin type III domain-containing protein 4 (Fndc4)

Acts as an anti-inflammatory factor in the intestine and colon. Binds to and acts on macrophages to downregulate pro- inflammatory gene expression.

Affects key macrophage functions, including phagocytosis, by downregulating many important pathways for macrophage activation, partly via by STAT3 activation and signaling. May be required to dampen the immunological response in colitis.