Zhang et al. have further shown that YY1 prevents invasive metastasis of pancreatic ductal adenocarcinoma (PDAC) by downregulating the expression of MMP10 in a MUC4/ErbB2/p38/MEF2C dependent manner indicating the tumor suppressive role of YY1 in pancreatic cancer. The gene discussed is MMP10; the disease is pancreatic ductal adenocarcinoma.