Carbon-11 Acetate and Fluorine F 18 Sodium Fluoride PET as a Biomarker of Treatment Response in Patients With Hormone Resistant Metastatic Prostate Cancer
PET Imaging as a Biomarker of Systemic Treatment Response for Men With Metastatic Castration-Resistant Prostate Cancer
研究概览
地位
详细说明
PRIMARY OBJECTIVES:
I. Demonstrate that carbon-11 acetate (11C-acetate) and 18F-fluoride (fluorine F 18 sodium fluoride) PET scans change as a result of treatment for men with metastatic castration-resistant prostate cancer by comparison of pre-treatment and 6-12 week post-treatment images (standardized uptake value [SUV], influx constant [Ki], and rate constant [K1]) with clinical response measures.
SECONDARY OBJECTIVES:
I. Compare results from 11C-acetate and 18F-fluoride PET scanning with the patient's clinical bone scan and determine which predicts clinical response better.
II. Compare changes in 11C-acetate and 18F-fluoride PET with changes in prostate-specific antigen (PSA) level.
III. Compare changes in 11C-acetate and 18F-fluoride PET with changes in urinary N-telopeptide and bone alkaline phosphatase.
IV. Determine if either baseline uptake or change in uptake for 11C-acetate and/or 18F-fluoride PET is correlated with progression-free survival by Prostate Cancer Working Group 2 (PCWG2) criteria (Scher, 2008).
V. Determine if either baseline uptake or change in uptake by 11C-acetate and/or 18F-fluoride PET is correlated with skeletal-related events (SREs) defined as radiographic pathologic fracture, need for radiation to bone, need for surgery, spinal cord compression or malignant hypercalcemia.
VI. Percentage of patients that experience adverse events by Common Terminology Criteria for Adverse Events, version 4.0.
VII. For patients who have tissue/blood biomarkers obtained for other indications, directly compare baseline uptake and change in uptake by 11C-acetate and/or 18F-fluoride PET with those biomarkers.
OUTLINE:
Patients receive carbon-11 acetate intravenously (IV) and fluorine F 18 sodium fluoride IV over 1 minute and undergo PET at baseline and at 6-12 weeks after systemic therapy starts.
After completion of treatment, patients are followed up every 3 months for up to 5 years.
研究类型
阶段
- 不适用
联系人和位置
学习地点
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Washington
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Seattle、Washington、美国、98109
- Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Patients preparing to receive systemic therapy to treat metastatic castration-resistant prostate cancer
- At the time of enrollment, patients must demonstrate evidence of castration-resistant prostate cancer with a documented castrate level of serum total testosterone (< 50 ng/dL) while on continuous androgen deprivation therapy
- Be informed of the investigational nature of this study and provide written informed consent in accordance with institutional and federal guidelines prior to study-specific screening procedures
- Be willing and able to comply with scheduled visits and other trial procedures
- Presence of at least one measurable or detectable metastasis as defined by bone scintigraphy, computed tomography (CT) scan appearance (magnetic resonance imaging [MRI] if indicated), or plain x-ray appearance
Exclusion Criteria:
- Any condition that would alter the patient's mental status, prohibiting the basic understanding and/or authorization of informed consent
- A serious underlying medical condition that would otherwise impair the patient's ability to receive treatment and imaging studies
- Expected lifespan of 12 weeks or less
- Extremely poor intravenous access, prohibiting the placement of a peripheral IV line for injection of radiotracer
- Radiation treatment to bone less than 4 weeks from the first PET scan
- Radiopharmaceutical treatment to bone less than 4 weeks from first PET scan
- Treatment with granulocyte-macrophage colony stimulating factor (GM-CSF) or granulocyte (G-CSF) within 4 weeks prior to first PET scan; patients should avoid treatment with these agents between the baseline and 6-12 treatment week imaging sessions
- Inability to lie still for imaging
- Weight > 300 pounds (lbs)
学习计划
研究是如何设计的？
设计细节
- 主要用途：诊断
- 分配：不适用
- 介入模型：单组作业
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Diagnostic (11C-acetate, 18F-fluoride, PET)
Patients receive carbon-11 acetate IV and fluorine F 18 sodium fluoride IV over 1 minute and undergo PET at baseline and at 6-12 weeks after systemic therapy starts.
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相关研究
Given IV
Given IV
其他名称：
Undergo 11C-acetate and 18F-fluoride PET
其他名称：
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Changes in prostate cancer metastases as measured by 11C-acetate and 18F-fluoride PET in response to systemic therapy
大体时间：Baseline to up to 12 weeks
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Percentage change between pre-treatment and post-therapy measurements will be computed for PET measures.
Log transformations will be considered if the rates of change are highly skewed.
Additionally, changes in PET measures will be analyzed descriptively by a stem-and-leaf plot.
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Baseline to up to 12 weeks
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Clinical response data (response, stable disease or progression)
大体时间：Up to 5 years
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Molecular imaging measures and clinical measures of treatment response, percentage change in PET derived imaging data will be compared to standard clinical parameters.
Association between these two types of data decline will be analyzed using the mid-P adjustment to Fisher's exact test (Lancaster, 1961) to evaluate the potential clinical utility of change in 11C-acetate and 18F-fluoride as a biomarker for response.
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Up to 5 years
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Proportion of both 11C-acetate and 18F-fluoride PET scans and 99mTc bone scans in discovering suspicious sites that are later confirmed by standard bone scans
大体时间：Up to 5 years
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Statistical significance of two proportions will be tested with a two-sample t-test for proportions (or nonparametric alternative).
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Up to 5 years
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Change in PSA parameters
大体时间：Baseline to up to 30 days post-PET
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Spearman rank correlation will be used to examine correlations between PET parameters and continuous variable changes in PSA.
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Baseline to up to 30 days post-PET
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Change in urinary N-telopeptide
大体时间：Baseline to up to 30 days post-PET
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Spearman rank correlation will be used to examine correlations between PET parameters and continuous variable changes in urinary N-telopeptide.
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Baseline to up to 30 days post-PET
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Change in bone alkaline phosphatase
大体时间：Baseline to up to 30 days post-PET
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Spearman rank correlation will be used to examine correlations between PET parameters and continuous variable changes in bone alkaline phosphatase.
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Baseline to up to 30 days post-PET
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Progression-free survival (PFS) using PCWG2
大体时间：Up to 5 years
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Cox proportional hazards model will be used to investigate the predictive value of the differences in pre- and post- treatment measures on PCWG2 PFS.
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Up to 5 years
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SRE defined as radiographic pathologic fracture, need for radiation to bone, need for surgery, spinal cord compression or malignant hypercalcemia
大体时间：Up to 5 years
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Cox proportional hazards model will be used to investigate the predictive value of the differences in pre- and post- treatment measures on time of first SRE.
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Up to 5 years
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合作者和调查者
调查人员
- 首席研究员：Evan Yu、Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium
研究记录日期
研究主要日期
学习开始
初级完成 (预期的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
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