Although our study revealed that MIEN1 expression among the prostate carcinoma cell lines was dependent on the cell type but not relevant to the extent of neoplasia in vitro, further IHC analysis of a human prostate tissue array indicated that MIEN1 immunostaining in normal prostate tissues was less significant than that in high-grade prostate cancer tissues (Figure 1). The gene discussed is MIEN1; the disease is prostate carcinoma.