As shown in Figure 4, we measured the percentage of viable cells after 72 h exposure to those compounds with high inhibitory activity against MET gene amplified lung cancer cells EBC-1 (3d, 7a, 8a, 8b and 12c) at 25 μM, and the testing was repeated twice to determine the IC50 values in these four cancer cell lines. This evidence concerns the gene MET and lung cancer.