<prompt> Answer this question truthfullyWhat is the specific proto-oncogene that is commonly associated with the development of Colon Cancer, Non-Small Cell Lung Adenocarcinoma, and Pancreatic Cancer when mutations occur?  <response>: <reason> Mutations in the KRAS Kirsten Rat Sarcoma Viral Oncogene Homolog proto-oncogene are commonly associated with the development of Colon Cancer, Non-Small Cell Lung Adenocarcinoma, and Pancreatic Cancer. 