Medivation Inc was formed in Delaware in October 1995. The Company is a biopharmaceutical company engaged in the rapid development of novel small molecule drugs to treat diseases for which there are limited treatment options. Together with its collaboration partner Astellas Pharma Inc., or Astellas, the Company is developing XTANDI enzalutamide capsules. Together with Astellas, it is also conducting multiple trials of enzalutamide in earlier prostate cancer disease states, including the Phase 3 PREVAIL trial in patients with mCRPC who have not received chemotherapy, or pre-chemotherapy mCRPC patients, and in patients with breast cancer. Based on the positive results of the AFFIRM trial, the Company has exercised its right under its collaboration agreement with Astellas to co-promote XTANDI in the U.S., should it receive marketing approval.