To examine the biological function of GATA3-AS1 in regulating HCC cell proliferation, Hep3B and HCCLM3 cells transfected with GATA3-AS1 siRNA/control siRNA or pcDNA3.1 + GATA3-AS1 vector/empty vector were analyzed using CCK-8 assay. The gene discussed is GATA3; the disease is hepatocellular carcinoma.