In addition, Ishikawa dataset reported that in pancreatic ductal adenocarcinoma PTPN11 was overexpressed (fold change = 1.602), and the analysis of Grutzmann dataset revealed that expression of PTPN11 in pancreatic ductal adenocarcinoma was also increased with a fold change of 2.122 versus normal samples. The gene discussed is PTPN11; the disease is pancreatic ductal adenocarcinoma.