What we are studying
You are being asked to take part in this research study because you have early stage (localized) prostate cancer and are undergoing active surveillance (being observed over time to see if your prostate cancer changes). The purpose of this study is to see if enzalutamide, an approved product for treating prostate cancer in advanced stages, can delay the progression of early stage prostate cancer.
The information collected in this study is necessary to find out whether the treatment tested is effective and safe. The information about you will be kept anonymous. Information may be used for seeking approval from the regulatory authorities to market the medicine for treating prostate cancer. It may also be used in reports of the study or for scientific presentations. Astellas may also use the information from this study for future medical research.