Our results showed that Cyclins (cyclin A2, cyclin E2, cyclin F, cyclin B1), CDK2, CDC2, and other cell growth promotion genes (pescadillo, spermidine synthase, mitotin) [25-27] were down-regulated in Taxotere and/or Furtulon treated prostate cancer cells, while CDK inhibitor p21WAF1 and other growth inhibitor genes (BTG2, VDUP1, anti-proliferative B-cell translocation gene 1) [28,29] were up-regulated, suggesting that Taxotere and/or Furtulon inhibited the growth of prostate cancer cells through the arrest of cell cycle and the inhibition of cell proliferation (Figure 4). This evidence concerns the gene BTG2 and Familial prostate cancer.