KRAS and chronic pancreatitis: Since KRAS2 mutations have been reported in pancreatic tissue or juice from 6–42% of patients with chronic pancreatitis (Furuya et al, 1997; Mulligan et al, 1999; Lüttges et al, 2000; Ha et al, 2001), and knowing that a part of this mutated DNA can be released into circulation (Yamada et al, 1998), the control group should include patients with chronic pancreatitis.