Fig. 4

ETV5 expression evaluated by immunohistochemistry in surgically resected pancreatic ductal adenocarcinoma (PDAC) undergoing neoadjuvant chemotherapy. (A) Representative images of ETV5 immunohistochemistry. Left upper panel shows high expression of ETV5 in PDAC cells. Left lower panel shows low expression of ETV5 in PDAC cells. Right panels show corresponding images of hematoxylin and eosin staining (20 × objective lens; Scale bars indicate 100 μm). (B) Kaplan-Meier curves for comparing overall survivals of patients with PDAC surgically resected after neoadjuvant chemotherapy with gemcitabine and S-1 depending on ETV5 expression.