Moreover, only a few tumor cells containing the phosphorylated form of NF-κB in the lungs of mice treated with the Pt(S-pr-thiosal)2 complex, in contrast to the tissues of cisplatin-treated and untreated mice where half of the tumor cells were positive for phosphorylated NF-κB (Figure 7b). This evidence concerns the gene NFKB1 and neoplasm.