The roles of Cdk5 in pancreatic cancer formation and progression via Ras-Ral signaling have been further proven by rescue test, in which constitutively activating RalA-GTP and RalB-GTP in pancreatic cancer cells expressing dominant-negative Cdk5 significantly rescued the effects of Cdk5 inhibition [67]. This evidence concerns the gene RALA and pancreatic neoplasm.