TMPRSS4 and pancreatic neoplasm: Among the nineteen UDEGs, other than the seven UDEGs reported to be carcinogenic and prometastatic genes involved in pancreatic cancer, the other UDEGs, such as ESM1, PCDH7, CORO2A, CEACAM5, GALNT5 and TMPRSS4, are also involved in other cancers.