To determine the role of STK24 in tumorigenesis, we analyzed STK24 expression in three groups of patient specimen, including colorectal cancer (CRC), lung adenocarcinoma (LUAD), and pancreatic adenocarcinoma (PAAD) by tissue microarray (TMA)‐based immunohistochemistry (IHC). The gene discussed is STK24; the disease is lung adenocarcinoma.