DDX24 and hepatocellular carcinoma: We found that reduction of DDX24 increased the sensitivity of HCC cells to SFN via cell viability analysis, and the IC50 values of SFN in DDX24 knockdown Hep3B and Bel-7402 cells were lower (Hep3B shDDX24-1: 4.23 ± 0.19 μmol/l, Hep3B shDDX24-2: 4.82 ± 0.18 μmol/l, Bel-7402 shDDX24-1: 4.93 ± 0.50 μmol/l, Bel-7402 shDDX24-2: 4.08 ± 0.40 μmol/l) in contrast to the corresponding control cells (Hep3B shNC: 5.58 ± 0.08 μmol/l, Bel-7402 shNC: 7.04 ± 0.18 μmol/l) (Figure 3a).