YAP1 and gastric cancer: Additionally, YAP1 expression has been reported to be related to poor prognosis in several malignancies, including HCC, non-small cell lung cancer, gastric cancer and colorectal cancer.[30]–[33] In this study, overall survival rate was relatively lower in HCCs and cHC-CCs that expressed YAP1 compared to those that did not, whereas disease free survival showed no difference according to YAP1 expression.