Mean change from baseline for perceived cognitive impairments (A), cognitive functioning (B), usual level of fatigue (C) and fatigue interference (D) at months 1, 2 and 3. For FACT-Cog higher scores are favourable; for EORTC QLQ-C30 functional scales and global health status/QoL higher scores are favourable, for EORTC QLQ-C30 symptom scales lower scores are favourable; for BPI-SF and BPI-SF lower scores are favourable AAP, abiraterone acetate plus prednisone; BFI-SF, Brief Fatigue Inventory-Short Form; BPI-SF, Brief Pain Inventory-Short Form; CI, confidence interval; ENZ, enzalutamide; EORTC QLQ-C30, European Organization for Research and Treatment of Cancer Quality of Life questionnaire; FACT-Cog, Functional Assessment of Cancer Therapy -Cognitive Function; PRO, patient-reported outcome. Mean change from baseline for perceived cognitive impairments (A), cognitive functioning (B), usual level of fatigue (C) and fatigue interference (D) at months 1, 2 and 3. For FACT-Cog higher scores are favourable; for EORTC QLQ-C30 functional scales and global health status/QoL higher scores are favourable, for EORTC QLQ-C30 symptom scales lower scores are favourable; for BPI-SF and BPI-SF lower scores are favourable AAP, abiraterone acetate plus prednisone; BFI-SF, Brief Fatigue Inventory-Short Form; BPI-SF, Brief Pain Inventory-Short Form; CI, confidence interval; ENZ, enzalutamide; EORTC QLQ-C30, European Organization for Research and Treatment of Cancer Quality of Life questionnaire; FACT-Cog, Functional Assessment of Cancer Therapy -Cognitive Function; PRO, patient-reported outcome. Antoine Thiery-Vuillemin et al. ESMO Open 2018;3:e000397 Copyright © European Society for Medical Oncology. All rights reserved.