Metastatic Castrate Resistant Prostate Cancer Clinical Trial
Official title:
A Phase I Trial of Fractionated Docetaxel and Radium 223 in Metastatic Castration-Resistant Prostate Cancer (CRPC)
The objective of this study is to determine the maximum safe dose of Ra-223 in combination with fractionated (split doses) docetaxel when given to subjects and to determine the best administering dose. The study will look at side effects that may happen while taking the combination treatment. A total of approximately 18 subjects will take part in the dose escalation part of the study and an additional 25 subjects will participate in the expansion cohort. This study will be conducted across four centers in the United States.
The primary objective of this study is to assess the safety and toxicity of a fractionated docetaxel schedule in combination with standard Ra-223. Secondary Objectives include: assessment of progression-free survival, time to treatment failure, overall survival, ability of subjects to complete 6 cycles of the combination therapy, assessment of Prostate Specific Antigen (PSA) kinetics and objective responses (measurable disease), assessment of quality of life and assessment of bone bio-marker outcomes. The study features a 4-week lead-in period with docetaxel monotherapy to assess for docetaxel intolerance. The lead-in period is then followed by combination therapy with Ra-223 every 4 weeks for 6 cycles in a traditional Phase I dose-escalation design. A provision has been made to include prophylactic granulocyte colony stimulating factor (G-CSF) cohorts after the lead-in period if neutropenia is the dose limiting toxicity at either dose level. The investigators hypothesize that the fractionated dosing of docetaxel will significantly mitigate the hematologic toxicity, preserve antineoplastic activity and allow for maintenance of the 4-weekly Ra-223 schedule. ;
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