A Study of Enzalutamide Re-treatment in Metastatic Castration-resistant Prostate Cancer After Docetaxel and/or Cabazitaxel Treatment

Participants received treatment with open-label enzalutamide, until radiographic or clinical progression (such as pathological fracture, cord compression, worsened pain requiring radiation therapy, or opioid analgesic dose increase or initiation), or unacceptable toxicity. Participants were to be allowed to continue enzalutamide until the next treatment was initiated. If another non-cytotoxic, non-investigational, antineoplastic agent was initiated after protocol-defined progression had been determined, enzalutamide was to be continued as long as the participant was tolerating enzalutamide and continued androgen deprivation therapy. Participants were to have a safety follow-up visit approximately 30 days following the last dose of study drug or prior to the initiation of a subsequent anti-cancer drug or investigational agent, whichever occurred first. Disease progression and survival were to be followed every 12 weeks for a maximum of 3 years from first dose. The study should have ended when the last participant has been followed for 1 year from the date of first dose, but the study was terminated and results up to the last date of evaluation (15 March 2017) are reflected in this disclosure.