TNF and inflammatory bowel disease: Taking the comparison between the NC and DSS groups for example, the GO and KEGG analyses from the cluster 2 of mmu_circ_0001109 and 469 mRNAs enriched most of the inflammation‐related biological process and signalling pathways, such as Chemokine signalling pathway, Cytokine‐to‐cytokine receptor interaction, TNF signalling pathway, Jak‐STAT signalling pathway, IBD, Toll‐like receptor signalling pathway and NF‐kappa B signalling pathway.