A Phase I Study of 5-FU (Plus Leucovorin) and Arsenic Trioxide for Patients With Refractory/Relapsed Metastatic Colorectal Carcinoma
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 13
- 试验地点
- 1
- 主要终点
- Maximum tolerated dose
研究概览
简要总结
RATIONALE: Drugs used in chemotherapy, such as fluorouracil and leucovorin, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Arsenic trioxide may help fluorouracil and leucovorin work better by making tumor cells more sensitive to the drugs. Giving arsenic trioxide together with fluorouracil and leucovorin may kill more tumor cells.
PURPOSE: This phase I trial is studying the side effects and best dose of arsenic trioxide and fluorouracil when given together with leucovorin in treating patients with stage IV colorectal cancer that has relapsed or not responded to treatment.
详细描述
OBJECTIVES:
- Determine the maximum tolerated dose and best dose combination of fluorouracil and arsenic trioxide when given together with leucovorin calcium in patients with relapsed or refractory stage IV colorectal cancer.
- Determine if arsenic trioxide down regulates the expression of thymidylate synthase in tumor and in peripheral blood mononuclear cells in these patients.
OUTLINE: This is a dose-escalation study of fluorouracil and arsenic trioxide.
Patients receive arsenic trioxide IV over 1-4 hours on days 1-5, 8, 11, 15, 18, and 22 and fluorouracil IV over 24 hours and leucovorin calcium IV over 24 hours on days 8, 15, and 22. Treatment repeats every 5 weeks for up to 8 courses in the absence of disease progression or unacceptable toxicity.
Cohorts of 1-6 patients receive escalating doses of fluorouracil and arsenic trioxide until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 2 of 6 patients experience dose-limiting toxicity. At least 6 patients are treated at the MTD.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 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 120 Years（Adult, Older Adult）
- 性别
- All
- 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
Single Arm
干预措施: Arsenic trioxide (Drug)
Single Arm
干预措施: Fluorouracil (Drug)
Single Arm
干预措施: Leucovorin calcium (Drug)
Single Arm
干预措施: Plasma levels of elemental arsenic (Other)
Single Arm
干预措施: Peripheral Blood Mononuclear Cells (PBMC) for mRNA analysis (Genetic)
Single Arm
干预措施: Tumor Biopsy (Fine-Needle Aspiration) (Procedure)
结局指标
主要结局
Maximum tolerated dose
时间窗: At study completion
The objective of this phase I study is to determine a phase II dose of combination of 5-FU and ATO that can be safely used for the treatment of 5-FU resistant colon cancer. Following the dose escalation/de-escalation procedure described in section 4.2, the recommended phase II dose of the combination 5-FU with ATO will be established as the maximum tolerated dose (MTD), defined as the highest dose level combination at which \<=1 out of 6 patients experiencing DLT.
Thymidylate synthase expression
时间窗: Baseline, Subsequent times
We will characterize TS levels in study patients at baseline and at subsequent times following initiation of treatment by descriptive statistics (minimum, maximum, average, standard deviation)
次要结局
未报告次要终点