Upon the analysis of the TCGA dataset of 415 human gastric cancer tissue samples and 34 normal stomach samples, a dramatic increase in the mRNA levels of β-catenin (CTNNB1) and its downstream target genes, such as cMyc, CyclinD1 (CCND1), and MMP2, was observed in human gastric cancer tissue samples (Supplementary Figure S7). Here, MMP2 is linked to gastric cancer.