As for the genechip datasets, the scatter plots in Figure S3A‐P show significant lower expression levels of MAOA in the HCC patients compared with the non‐cancer groups in GSE6764, GSE14323, GSE14520‐GPL571, GSE14520‐GPL3921, GSE29721, GSE45436, GSE55092, GSE76297, GSE102079, GSE112790, GSE121248, GSE54236, GSE67764, and GSE59259 (all with P‐values <.05). Here, MAOA is linked to cancer.