AR-expressing prostate cancer cell lines, LNCaP, VCaP, C4-2, and 22RV1, non-AR expressing PC3 tumor cells, and non-tumorigenic RWPE-1 prostate epithelial cells were treated with varying concentrations of GSA0932 for 48 hours, and proliferation evaluated using the MTT assay. The gene discussed is AR; the disease is prostate carcinoma.