As shown in Supplementary Fig. 19, ferroptosis inhibitor (ferrostatin-1, Fer-1) restrained the B16F10 cancer-killing capacity of HGF remarkably, whereas the apoptosis inhibitor (carbobenzoxy-valyl-alanyl-aspartyl-[O-methyl]-fluoromethylketone, Z-VAD-FMK) and the necroptosis inhibitor (necrostatin-1s, Nec) did not. This evidence concerns the gene HGF and cancer.