The overexpression of circHIPK3 was found to promote the proliferation and metastasis of prostate cancer cells through sponge miR-338-3p (38); however, Dong Chen et al. demonstrated that the circHIPK3-miR-193a-3p-MCL1 signaling axis mediates the occurrence and development of prostate cancer (39). The gene discussed is MCL1; the disease is prostate carcinoma.