A Randomized, Double-Blind, Placebo-Controlled, Multi-Center Phase 3 Study of Denosumab on Prolonging Bone Metastasis-Free Survival in Men With Hormone Refractory Prostate Cancer
试验速览
- 阶段
- 3 期
- 状态
- 已完成
- 发起方
- Amgen
- 入组人数
- 1,435
- 主要终点
- Bone Metastasis-free Survival
研究概览
简要总结
The purpose of this study is to compare the treatment effect of denosumab with placebo on prolonging bone metastasis-free survival in men with hormone refractory (androgen independent) prostate cancer who have no bone metastasis at baseline.
详细描述
Participants were randomized to receive denosumab 120 mg or placebo every 4 weeks (Q4W) until approximately 660 participants developed bone metastasis or died and the primary efficacy and safety analyses were completed.
All participants undergoing scheduled assessments were offered open-label denosumab 120 mg subcutaneous (SC) until they either developed a bone metastasis, obtained access to commercially available product in this setting, or for up to 3 years, whichever came first. For participants who ended participation before the open-label extension (OLE) phase or withdrew from investigational product during the OLE phase, their survival data was to be collected every 6 months for up to 3 years after their last dose of investigational product.
Participants in the Czech Republic and United Kingdom were enrolled under a separate protocol for the OLE phase per Health Authority request, and are reported separately (Study 20080585; NCT01824342).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
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
- •men with histologically confirmed prostate cancer
- •bilateral orchiectomy at least 6 months before randomization or continuous androgen-deprivation therapy (ADT) with a gonadotropin releasing hormone (GnRH) agonist or antagonist for at least 6 months before randomization
- •total testosterone level less than 50 ng/dL,
- •hormone refractory (androgen independent) prostate cancer demonstrated during continuous ADT/post-orchiectomy defined as: 3 consecutive prostate-specific antigen (PSA) values with PSA1 < PSA2 < PSA3, each PSA value must be separated by at least 2 weeks, PSA2 and PSA3 greater than or equal to 1.0 ng/mL,
- •high risk for development of bone metastasis defined as PSA value greater than or equal to 8.0 ng/mL, obtained no more than 3 months before randomization OR PSA doubling time less than or equal to 10.0 months
排除标准
- •prior or current evidence of radiographically detectable bone metastasis
- •known prior or current evidence of any metastatic involvement of distant organs (lymph node metastases in any region is acceptable)
- •prior or current intravenous bisphosphonate administration
研究组 & 干预措施
Denosumb
Participants received 120 mg denosumab administered by subcutaneous injection every 4 weeks during the double-blind treatment phase. Participants then received open-label denosumab 120 mg by subcutaneous injection every 4 weeks during the open-label extension phase.
干预措施: Denosumab (Biological)
Placebo
Participants received placebo subcutaneous injections every 4 weeks during the double-blind treatment phase. Participants then received open-label denosumab 120 mg by subcutaneous injection every 4 weeks during the open-label extension phase.
干预措施: Placebo (Biological)
结局指标
主要结局
Bone Metastasis-free Survival
时间窗: From the first dose of investigational product to the primary data cutoff date of 30 July 2010; median time on study was approximately 20 months.
The time to the first occurrence of bone metastasis (either symptomatic or asymptomatic) or death from any cause. Participants who did not experience bone metastasis or on-study death were censored at the last on-study contact date or the primary analysis data cutoff date, whichever came first. Median bone metastasis-free survival time was estimated using the Kaplan-Meier method.
次要结局
- Overall Survival(From the first dose of investigational product to the primary data cutoff date of 30 July 2010; median time on study was approximately 20 months.)
- Time to First Bone Metastasis(From the first dose of investigational product to the primary data cutoff date of 30 July 2010; median time on study was approximately 20 months.)