Immunohistochemistry was performed to determine AEG-1 expression in 105 paraffin-embedded, archived PDAC tissue samples, including four histological types of PDAC: classical ductal adenocarcinoma, adenosquamous carcinomas, undifferentiated carcinomas, and mixed ducal-neuroendocrine carcinoma. Here, MTDH is linked to neuroendocrine carcinoma.