Thus, we carried out gene expression profiling interactive analysis (http://gepia2.cancer-pku.cn/#index) with data from The Cancer Genome Atlas (TCGA) datasets and found that DNMT3a expression was positively correlated with HDAC7 expression and that HDAC7 expression was positively correlated with ZEB1 expression in LUAD (Fig. 2d). The gene discussed is HDAC7; the disease is cancer.