The STK11 p.Phe354Leu variant was identified in 20 of 1472 proband chromosomes (frequency: 0.014) from Korean, Japanese, Chinese and American individuals or families with Peutz-Jeghers disease, and Finnish, Korean, (French) Canadian, Portuguese, Italian, American individuals with CRC, high risk breast cancer, hereditary diffuse gastric cancer, pancreatic cancer, and medullary thyroid cancer ....