In Cho's dataset, the transcription levels of ALDH1A1 in both gastric intestinal type adenocarcinoma and diffuse gastric adenocarcinoma were lower than that in gastric tissues (Fold changes were −5.046 and −3.278, respectively) (Figure 2A and 2B) [18]. This evidence concerns the gene ALDH1A1 and diffuse gastric adenocarcinoma.