A Phase II Study of BAY 43-9006 (Sorafenib) in Metastatic, Androgen-Independent Prostate Cancer
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 46
- 试验地点
- 1
- 主要终点
- Progression Free Survival
研究概览
简要总结
BAY 43-9006 (Sorafenib) is an experimental cancer drug produced by Bayer Health Care Corporation. It represents a new class of anticancer agents known as bi-aryl ureas. This study will investigate its effect on prostate cancer and its side effects. Researchers expect to enroll a maximum of 46 men with prostate cancer for this study. The duration of the study will depend on its results.
Before beginning to take the drug, patients will be admitted to the hospital for 2 days, have a medical examination and give blood samples, and have a tumor or bone marrow biopsy. On the first day of the study, patients will begin taking the drug as 2 tablets twice daily, morning and evening. Blood will be taken throughout the day to determine the drug's level in the bloodstream.
Patients will be discharged from the hospital on the second day, and will continue to take the drug twice daily until instructed to stop. During each of the first 4 weeks, patients will be required to have their blood pressure checked. At the end of the first 4 weeks, patients will have a physical examination and blood tests, as well as a second tumor or bone marrow biopsy.
After the first 4 weeks, patients will continue with their drug regimen. At the end of each 4-week cycle, patients will have a physical examination and blood tests. Patients will also have x-Rays, computed tomography (CT) scans, and/or magnetic resonance imaging (MRIs) at every other 4-week examination or as required. Patients will be asked to keep a diary recording the time and amount of their medication for this study.
详细描述
BAY 43-9006 (Sorafenib) is a potent inhibitor of wild-type and mutant b-Raf and c-Raf kinase isoforms in vitro. In addition, this agent also inhibits p38, c-kit, vascular endothelial growth factor receptor 2 (VEGFR-2) and platelet-derived growth factor receptor beta (PDGFR-beta) affecting tumor growth as well as possibly promoting apoptosis by events downstream of c-Raf. At this time, over 500 patients have been treated with this drug with tolerable side effects.
The primary objective of this study is to determine if BAY 43-9006 (Sorafenib) is associated with a 50% 4 month probability of progression free survival in patients with metastatic androgen independent prostate cancer (AIPC) as determined by clinical, radiographic, and prostatic specific antigen (PSA) criteria.
The secondary objective of this study will be demonstration of biologic effect by the drug in the patient and on the tumor (when possible). Correlative studies will be conducted on serially obtained tissue biopsies, bone marrow biopsies, and white blood cell collections. These laboratory correlates will include elucidation of activation of components of the Raf-extracellular-signal regulated kinase (ERK)-methyl ethyl ketone (MEK) and angiogenesis pathways using protein microarray technologies developed by the National Cancer Institute (NCI)/Food and Drug Administration (FDA) clinical proteomics program.
Per Amendment D, a secondary objective of this study will also be to determine the time to progression measured by clinical and radiographic criteria. The 22 patients treated on the first stage of this protocol will be retrospectively evaluated with respect to this secondary endpoint possible. Please refer to the statistics section for further details.
The combination of correlated clinical and laboratory endpoints with emphasis on molecular signaling will provide new information on the anti-tumor effects helping to characterize its role in the treatment of androgen independent prostate cancer (AIPC).
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- Male
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- 未提供
研究组 & 干预措施
First Stage - disease progression
The first stage was to rule out the probability of 4 month progression free survival.
Patients were given 400 mg BAY 43-9006 orally twice daily in 28 day cycles.
干预措施: BAY 43-9006 (Drug)
Second Stage - increased accrual
Due to prostatic specific antigen and radiographic discordance during the first stage, the protocol was amended to allow accrual to a second stage.
Patients were given 400 mg BAY 43-9006 orally twice daily in 28 day cycles.
干预措施: BAY 43-9006 (Drug)
结局指标
主要结局
Progression Free Survival
时间窗: 4 months
Determine whether BAY 43-9006 when used to treat metastatic prostate cancer is associated with having 50% of Patients Progression Free at 4 Months by clinical, radiographic, and prostatic specific antigen (PSA)criteria.
次要结局
- Number of Participants With Adverse Events(Date treatment consent signed to date off study, approximately 49 months.)
- Maximum Observed Plasma Concentration (Cmax) of BAY 43-9006 (Sorafenib)(0, 0.25, 0.50, 1, 2, 4, 6, 8, 12, AND 24 hours post dose)
- Median Overall Survival(Time from treatment start date until date of death or date last known alive, approximately 18.3 months.)
- Overall Response Evaluated by the Response Evaluation Criteria in Solid Tumors (RECIST)(Every 2 cycles (1 cycle = 28 days))
- Geometric Mean for Exposure Area Under the Curve (AUC) 0-12(0, 0.25, 0.50, 1, 2, 4, 6, 8, 12, and 24 hours post-dose)
- Time to Maximum Observed Plasma Concentration (Tmax) of BAY 43-9006 (Sorafenib)(0, 0.25, 0.50, 1, 2, 4, 6, 8, 12, and 24 hours post-dose)
研究者
William Dahut Jr., M.D.
Principal Investigator
National Institutes of Health Clinical Center (CC)