We investigated seven cell lines: VERO (African green monkey normal kidney epithelial cell), Hep-G2 (hepatocellular carcinoma), A549 (lung adenocarcinoma), MDA-MB-231 (triple-negative breast adenocarcinoma), MCF-7 (ER ( +) breast adenocarcinoma), LnCaP (AR ( +) prostate cancer) and DU145 (AR (-) prostate cancer) cell lines. The gene discussed is AR; the disease is breast adenocarcinoma.