The ROC curves of the following six RNA sequencing datasets indicated the discriminatory capacity of MAOA in the HCC patients and non‐HCC groups: GSE63018, GSE56545, GSE63863, GSE77509, GSE77314, and GSE69164 (all with AUC >0.70 and P‐values <.05; Figure S7A‐P). The gene discussed is MAOA; the disease is hepatocellular carcinoma.