FTO and neuroblastoma: The results of the CCK-8 assay were consistent with the cell confluence data; under the etoposide treatment, the cell survival of FTO siRNA-transfected cells was 11.9% lower than that of control siRNA-transfected cells in AS cells (p < 0.01), and 7.1% lower in BE2 cells (p < 0.01) (Figure 4C), but OE-FTO had no significant effect on the sensitivity of NB cells to etoposide (Figure 4E).