In the context of gastric cancer context, 4-XL-PPD, a novel ginsenoside derivative, inhibits the viability of BGC-803 gastric cancer cells and produces ROS to inhibit migration and invasion-associated proteins (MMP-2, MMP-9, E-calmodulin, and CD34) and induce apoptosis (Wang Y et al., 2019). This evidence concerns the gene MMP9 and gastric cancer.