FTO and neoplasm: Furthermore, through the establishment of a xenograft mice model by injecting FTO‐knockdown 253J cells, we observed on day 33 after cell implantation that tumor growth (p < 0.001; Figure 2G) and tumor weight were significantly decreased, by 48.7% and 51.2%, respectively (p < 0.05; Figures 2H and 2I).