MUTYH and pachyonychia congenita: We also investigated MYH expression in protein extracts from normal human pancreatic ductal epithelial cells (HPDE cells) and the PC cell lines MiaPaCa-2, HPAFII, Panc-1 and AsPC-1 (MiaPaCa-2, Panc-1: primary tumor-derived; HPAFII and AsPC-1: metastases-derived).