From our results, we found that TOB1 may function as a tumor suppressor gene in K‐Ras wild‐type pancreatic cancer and dysregulated TOB1 may partially interpret the underlying mechanism of K‐Ras wild‐type pancreatic cancer carcinogenesis, but what roles it plays in K‐Ras mutant pancreatic cancer cells deserve further study. The gene discussed is TOB1; the disease is familial pancreatic carcinoma.