First, four representative FGFR-aberrant cancer cell lines were used, namely, the KG-1 myeloid leukemia cancer cell line (FGFR1 translocation), NCI-H1581 lung cancer cell line (FGFR1 amplification), SNU16 gastric cancer cell line (FGFR2 amplification), and UMUC14 bladder cancer cell line (FGFR3 mutation). The gene discussed is FGFR2; the disease is lung cancer.