Previous studies have shown that the expression level of ARG1 in liver tissues and paracancerous tissues is significantly higher than that in HCC tissues, and the disease-free survival (DFS) and overall survival (OS) of patients with HCC are related to the expression of ARG1, indicating that ARG1 may play a regulatory role in the occurrence and development of HCC (10, 11). Here, ARG1 is linked to hepatocellular carcinoma.