Elevated expression of FoxP4 in HCC cells promotes their proliferation. (A and B) FoxP4 was overexpressed or knocked down in HCCLM3 cells, and after transfection for 48 h, the expression of FoxP4 was determined using RT-qPCR and western blot analyses. (vs. Vector or SCR, *P<0.05). (C) Colony formation assay was used to assess the effect of FoxP4 on HCC cellular proliferation. (vs. Vector or SCR, *P<0.05). (D) CCK-8 assay was used to assess the effect of FoxP4 on HCC cellular proliferation. (vs. Vector or SCR, *P<0.05). HCC, hepatocellular carcinoma.