Tumor-promoting inflammatory networks in pancreatic neoplasia: another reason to loathe Kras.

Oncogenic Kras is increasingly appreciated as an instigator of an inflammatory program that facilitates pancreatic cancer. In this issue of Cancer Cell, McAllister and colleagues use both gain-of-function and loss-of-function studies to demonstrate that oncogenic Kras activates an IL-17-dependent pathway that promotes the initiation and progression of preinvasive pancreatic neoplasia.