GAS5 and hepatocellular carcinoma: Co-transfection of plasmids with RBM38 overexpression and either full-length or fragmented (387–698 bp) GAS5 significantly increased the luciferase activity of sorafenib-resistant HCC cells (p < 0.01); however, co-transfection of plasmids with RBM38 overexpression and fragmented GAS5 (160–473 bp) did not influence the luciferase activity (p > 0.05) (Figure 3D).