Abstract: The invention provides methods to treating conditions such as prostate cancer, or for ameliorating one or more symptoms associated with prostate cancer, or for agents that modulate the biological activity of the androgen receptor. The invention also provides methods and compositions suitable for therapeutic applications.

Abstract: The instant invention provides potent antiandrogen compounds, such as 3?-acetoxyandrost-1,5-diene-17-ethylene ketal and 3?-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.

Abstract: The instant invention provides potent antiandrogen compounds, such as 3?-acetoxyandrost-1,5-diene-17-ethylene ketal and 3?-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.

Abstract: The instant invention provides potent antiandrogen compounds, such as 3?-acetoxyandrost-1,5-diene-17-ethylene ketal and 3?-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.

Abstract: The invention relates to the use of compounds to ameliorate or treat a condition such as a cystic fibrosis, neutropenia or other exemplified conditions. Exemplary compounds that can be used include 3?-hydroxy-17?-aminoandrost-5-ene, 3?-hydroxy-16?-fluoro-17?-aminoandrost-5-ene, 3?-hydroxy-16?-fluoro-17?-aminoandrost-5-ene, 3?-hydroxy-16?-fluoro-17?-aminoandrost-5-ene, 1?,3?-dihydroxy-4?-fluoroandrost-5-ene-17-one, 1?,3?,17?-trihydroxy-4?-fluoroandrost-5-ene, 1?,3?-dihydroxy-6?-bromoandrost-5-ene, 1?-fluoro-3?,12?-dihydroxyandrost-5-ene-17-one, 1?-fluoro-3?,4?-dihydroxyandrost-5-ene and 4?-fluoro-3?,6?,17?-trihydroxyandrostane.

Abstract: The instant invention provides potent antiandrogen compounds, such as 3?-acetoxyandrost-1,5-diene-17-ethylene ketal and 3?-hydroxyandrost-1,5-diene-17-ethylene ketal, and methods for their use in the prevention and treatment of biological conditions mediated by androgen receptors. Thus, for example, compounds of the invention are useful in the prevention and treatment of prostrate cancer. Furthermore, it has been discovered that compounds of the invention are useful in the prevention and treatment of androgen-independent cancers such as androgen-independent prostrate cancer. Finally, inventive compounds may be used to treat antiandrogen induced withdrawal syndrome.

Abstract: The invention provides compositions comprising formula 1 steroids, e.g., 16?-bromo-3?-hydroxy-5?-androstan-17-one hemihydrate and one or more excipients, typically wherein the composition comprises less than about 3% water. The compositions are useful to make improved pharmaceutical formulations. The invention also provides methods of intermittent dosing of steroid compounds such as analogs of 16?-bromo-3?-hydroxy-5?-androstan-17-one and compositions useful in such dosing regimens. The invention further provides compositions and methods to inhibit pathogen (viral) replication, ameliorate symptoms associated with immune dysregulation and to modulate immune responses in a subject using certain steroids and steroid analogs. The invention also provides methods to make and use these immunomodulatory compositions and formulations.