NCIt definition : An orally bioavailable, organic, non-steroidal small molecule targeting the androgen
receptor (AR) with potential antineoplastic activity. Through a mechanism that is
reported to be different from other approved AR antagonists, enzalutamide inhibits
the activity of prostate cancer cell ARs, which may result in a reduction in prostate
cancer cell proliferation and, correspondingly, a reduction in the serum prostate
specific antigen (PSA) level. AR over-expression in prostate cancer represents a key
mechanism associated with prostate cancer hormone resistance.;