To further explore the mechanism by which miR‐328‐3p neutralized the cancer‐promoting effect of hsa_circRNA_002178, a series of assays were conducted to identify the relationship between hsa_circRNA_002178 and miR‐328‐3p the interaction between miR‐328‐3p and its target gene of miR‐328‐3p, COL1A1. Here, COL1A1 is linked to cancer.