Besides the above circRNA–miRNA–immune-related mRNA regulatory network, some other circRNA–miRNA–mRNA regulatory networks were also found in GC, such as hsa_circ_0045602–hsa-miR-4538–WNT5A and hsa_circ_0018004–hsa-miR-199a-5p–KL. The gene discussed is KL; the disease is gastric cancer.