STAT3 and pancreatic adenocarcinoma: We downloaded TCGA RPPA protein database and stratified the PAAD patients into high P-STAT3 (high risk) group and low P-STAT3 (low risk) group based on the median value of P-STAT3, we also stratified the LIHC patients into high-YAP1 (high risk) and low-YAP1 (low risk) group.