By parallel comparison of the frequencies of PTEN deletion/inactivation among prostate cancer samples from China and the United Kingdom, Mao et al. [24] revealed that only 34% of Chinese tissue specimens displayed low levels of PTEN, although the frequency of PTEN inactivation (69.8%) in specimens from the United Kingdom were similar to that previously published for Western samples. Here, PTEN is linked to prostate carcinoma.