The present invention provides pharmaceutical compositions and methods for treating cancer comprising administering a therapeutically effective amount of a 17-alpha hydroxylase/C17, 20-lyase inhibitor.La présente invention concerne des compositions pharmaceutiques et des méthodes de traitement du cancer comprenant ladministration dune quantité thérapeutiquement efficace dun inhibiteur de la 17-alpha hydroxylase/C17,20-lyase.