We chose 2 blood cancer cell lines (Jurkat and HL60, wild-type KRAS), 2 lung cancer cell lines (NCI-H661 and NCI-H1703, wild-type KRAS), and 2 pancreatic cancer cell lines (YAPC and SW1990, mutant KRAS) for these studies. This evidence concerns the gene KRAS and familial pancreatic carcinoma.