IHC and TUNEL assays in the tumor tissues displayed that GZD824 inhibits the FGFR1 activation and induces apoptosis in Ba/F3‐FGFR1 and Ba/F3‐FGFR1‐V561F xenograft models (Figure 5D and 5E). This evidence concerns the gene FGFR1 and neoplasm.