FBXW7 is a tumor suppressor gene that is mutated in several tumors including colorectal, liver, bladders and ovarian cancers. It is also mutated in endometrial and head and neck squamous cancers. FBXW7 mutations are rare in pancreatic adenocarcinoma and are present in less than 1% of tumors. Preclinical data suggest that FBXW7 mutations may sensitize cells to mTOR inhibitors. The full pathologic significance of FBXW7 mutations in pancreatic adenocarcinoma remains to be more fully elucidated.