We filtered drugs through area under the curve (AUC) values that exhibited significant correlations with CDK9 expression in COAD, rectum adenocarcinoma (READ), lung adenocarcinoma (LUAD), lung squamous cell carcinoma (LUSC), and pancreatic adenocarcinoma (PAAD) cancer cell lines (Figure 1A). This evidence concerns the gene CDK9 and lung adenocarcinoma.