An SRE was defined as palliative surgery or radiotherapy to bone, pathological fractures, or spinal cord compression. High-volume disease was defined as visceral metastases and/or at least 4 bone metastases, including 1 or more metastases out of the axis and pelvis; LV disease, the absence of HV disease. A, Overall survival in patients with HV disease. B, Overall survival in patients with LV disease. C, Time to first SRE in patients with HV disease. D, Time to first SRE in patients with LV disease. AA indicates abiraterone acetate plus prednisone; BRI, bone resorption inhibitor.