SUMO1P3 and hepatocellular carcinoma: In order to investigate the function of SUMO1P3 in HCC progression, HepG2 cells were transfected by si‐SUMO1P3 vector to inhibit the expression of SUMO1P3. qRT‐PCR analysis suggested that the levels of SUMO1P3 were significantly decreased after the transfection with si‐SUMO1P3 (P < .001, Figure 2).