The research indicates the inhibiting function of sporamin (a Kunitz-type trypsin inhibitor, found in sweet potato (Ipomea batatas)) on the number and mass of tumor nodules formed in the abdominal cavity via reduction of β-catenin (mRNA and protein) and VEGF concentration in the liver of mouse xenografted with LoVo CRC cells [97]. This evidence concerns the gene VEGFA and neoplasm.