ORM2 and hepatocellular carcinoma: To better understand the function of ORM2 in HCC, we constructed a lentivirus vector containing the complete ORF of ORM2 and established the SMMC-7721-ORM2, Li-7-ORM2 and HCC-LY5-ORM2 HCC cell lines; cells infected with an empty vector were used as controls (Figure 2A).