KRAS and carcinoma of esophagus: In all cancer patients with KRAS mutations, we found gastrointestinal (GI) tract cancers: esophageal carcinoma (ESCA), stomach adenocarcinoma (STAD), colon adenocarcinoma (COAD), rectum adenocarcinoma (READ) and pancreatic adenocarcinoma (PAAD), had the lowest K20 prediction scores.