STK11 and malignant colon neoplasm: In addition to pancreatic cancer, LKB1 somatic mutations, structural variants, amplifications, and deletions have been described in many cancer types including lung adenocarcinoma,36 hepatocellular carcinoma,37 head and neck squamous cell carcinoma38 as well as cancers of the colon,39 cervix,4 and breast40 (Fig. 1).41