AC-262536 dose-dependently inhibits dihydroxytestosterone (DHT)-induced proliferation of LNCaP. The effects are significant with 100 nM AC-262536 (%inhibition 47.2±12.2), and reaches a plateau with 1 μM treatment (%inhibition 50.7±7.6). Thus, AC-262536 can act as a functional antagonist in prostate cells.