BAY88-8223, Does Response Study in HRPC Patients

The study is designed to investigate whether there is a dose-response relationship for radium-223 in patients with painful bone metastases secondary to prostate carcinoma regarding palliation of bone pain. The palliative efficacy will be established through assessments of bone pain and consumption of analgesia. Furthermore, the aim is to find the most efficient dose with an acceptable safety profile. The safety will be assessed through measurements of adverse events, and acute haematological toxicity during the study period. Long-term chronic toxicity, and the overall survival at one and two years post treatment will also be assessed. This is a double-blind, dose-response, randomized, multi-centre phase II efficacy and safety study of radium- 223. The clinical sites will enroll a total of 100 eligible patients. The treatment is a single intravenous administration of radium-223. The target population is patients suffering from bone pain due to skeletal metastasis secondary to hormone refractory prostate cancer.