We examined the expression of EZH2 in PCa cell lines and immortalized prostate epithelial cell lines, and found that EZH2 was expressed in prostate cancer cells at relatively higher levels compared to immortalized prostate epithelial cell lines: PZ-HPV-7 and RWPE-1 cells (Fig. 2A, upper panel). The gene discussed is EZH2; the disease is prostate carcinoma.