FOXA1 and lung adenocarcinoma: To determine whether FOXA1 also contributes to lung adenocarcinoma tumorigenesis by directly regulating its transcriptional targets, we collected 1,262 upregulated and 1,262 downregulated genes in lung adenocarcinoma from Oncomine [19] gene expression signatures with concept names of ‘Lung Adenocarcinoma vs. Normal - Top 10% Over-expressed (Su Lung)’ and ‘Lung Adenocarcinoma vs. Normal - Top 10% Under-expressed (Su Lung)’.