Impact of (A): metastatic sites (bone metastasis±lymph node metastasis vs visceral metastasis), (B): PSA response, (C): AA drug exposure duration on overall survival. Impact of (A): metastatic sites (bone metastasis±lymph node metastasis vs visceral metastasis), (B): PSA response, (C): AA drug exposure duration on overall survival. AA, abiraterone acetate; PSA, prostate-specific antigen. Ana Fröbe et al. ESMO Open 2016;1:e000049 Copyright © European Society for Medical Oncology. All rights reserved.