Cell growth curves in 3 cancer cell lines are shown in Figure 4A. The growth of KATO III/wt-HB-EGF and KATO III/HB-EGF-mC cells was significantly faster than that of KATOIII/mock cells, and the growth of KATO III/HB-EGF-mC cells was significantly decreased compared with KATO III/wt-HB-EGF cells. This evidence concerns the gene GSTM1 and cancer.