GLI1 and pancreatic ductal adenocarcinoma: GLI1 is expressed in different human malignancies including pancreatic ductal adenocarcinoma (PDAC) (Eberlet al., 2012;Fiaschiet al., 2009;Goelet al., 2013;Hui & Angers, 2011;Millset al., 2013;Rajurkaret al., 2012;Thayeret al., 2003).