UCHL5 and hepatocellular carcinoma: We initially used GEPIA online TCGA-LIHC data to identify the expression level of UCHL5 in HCC and surrounding tissues in order to investigate the function of UCHL5 in HCC (Fig. 1A), the expression of UCHL5 in HCC was significantly increased, and the accuracy of 1-year prognosis prediction was high.