YAP1 and gastric cancer: Up‐regulation of YAP1 has been observed in gastric cancer, colorectal cancer, squamous cell carcinoma (SCC), non‐small cell lung cancer (NSCLC), ovarian cancer, uveal melanoma, endometrial cancer, hepatocellular cancer (HCC), pancreatic ductal adenocarcinoma, cholangiocarcinoma, and head and neck cancer 9, 82, 84, 90, 91, 92, 93, 94, 95, 96.