[Radium-223 dichloride in patients with castration-refractory prostate cancer]

B M Winter, F-C von Rundstedt, M-O Grimm
Der Urologe. Ausg. A 2017, 56 (11): 1435-1439
Since November 2013, the alpha emitter radium-223 dichloride (Alpharadin/Xofigo®) has been approved for the treatment of men with castration-resistant prostate cancer (CRPC) with symptomatic bone metastases and no known visceral metastatic disease. In the ASYMPCA clinical trial, radium-223 was shown to improve overall survival and to reduce the time to the first symptomatic skeletal event. The use of radium-223 was associated with a reduction of pain and an improvement of health-related quality of life compared to the placebo arm. The efficacy of radium-223 dichloride was not inhibited by the use of chemotherapy with docetaxel. Studies have demonstrated a longer overall survival (OS) in patients with a combined treatment of abiraterone or enzalutamide; however, until this data is validated in larger clinical trials, the combination of radium-223 and abiraterone/enzalutamide cannot be recommended. Patients who have received concomitant medication with denosumab appeared to have a longer OS compared to patients who did not. A second treatment cycle of radium-223 was not associated with any adverse events when compared to the outcomes reported in the ASLYMPCA trial. Here the median radiographic progression-free survival was 9 months.

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