TIMP3 and hepatocellular carcinoma: By sponging miR‐17‐3p and miR‐181b‐5p, hsa_circ_0001445 promotes the expression of metalloproteinase inhibitor 3 (TIMP3) and then inhibits the proliferation and migration of HCC cells.63 Zhu et al68 demonstrated that hsa_circ_0067934 enhances the proliferation, migration and invasion of HCC cells via the sponging of miR‐1324 and concomitant activation of the FZD5/Wnt/β‐catenin signaling pathway.