A Randomized Study of Once Daily IV Busulfan With Fludarabine With Hemopoietic Stem Cell Transplantation for Acute Myelogenous Leukemia (AML) and Myelodysplastic Syndrome (MDS)
试验速览
- 阶段
- 3 期
- 状态
- 已完成
- 入组人数
- 233
- 试验地点
- 1
- 主要终点
- Treatment-related Mortality (TRM)
研究概览
简要总结
The goal of this clinical research study is to learn if giving busulfan in a dose based on blood levels, along with a fixed (unchanging) dose of fludarabine, is more effective and causes fewer side effects for AML or myelodysplastic syndrome patients than the standard method of giving a fixed busulfan dose based on body size, along with a fixed dose of fludarabine. The safety of dosing based on blood levels will also be studied.
详细描述
Busulfan is a chemotherapy drug that kills cancer cells by binding to DNA, and is commonly used in stem cell transplantation. Fludarabine is an antimetabolite drug which has anti-leukemia and immunosuppressive effects.
If you are eligible to take part in this study, you will be randomly assigned (as in the toss of a coin) to 1 of 2 study groups. One group will receive a fixed dose of busulfan, while the other group will receive an adjusted dose of busulfan based on blood levels of the drug. Both groups will receive fludarabine treatment as well as a stem cell transplant.
Patients in the adjusted-dose group will first receive a low-level "test" dose of busulfan to check how their blood levels change over time; this information will be used to decide the next dose needed to reach the target blood level that matches your body size. Patients in the fixed-dose group will receive a fixed dose of busulfan without the test dose. If you are assigned to the fixed-dose group, this measurement will only affect your dose level if you have an unusually high or low drug level in your blood. Patients in both groups will have a total of about 20 teaspoons (less than 7 tablespoons) of blood drawn over time to check their busulfan blood levels following one or more of the busulfan treatments.
About 11 samples of blood will be drawn to check your blood levels of busulfan over time following the test dose and the first high-dose busulfan treatment; each sample is about 1 teaspoon of blood. A heparin lock will be placed in your vein to lower the number of needle sticks needed for these draws. If it is not possible for these blood level tests to be performed for technical or scheduling reasons, you will receive the standard fixed dose.
Both groups of patients receive fludarabine through a central venous catheter (CVC--a small tube inserted into one of your major veins, usually in the chest or shoulder blade) over 1 hour, once a day, for 4 days. After each dose of fludarabine, the high-dose Busulfan will be infused through the CVC over 3 hours. These drugs are given to try to kill malignant cells and suppress your immune system in order to reduce the risk of stem cell transplant rejection. If you are going to be receiving a transplant from an HLA-type-nonidentical or unrelated donor, you will also receive Thymoglobulin (ATG) over 4 hours on the 3 days prior to the transplant to further suppress your immune system.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- — 至 65 Years（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Acute myeloid leukemia past first remission, in first or subsequent relapse, in first remission (cytogenetics other than t(8;21, inv 16, t(15;17)) or induction failures. Only myeloid leukemia but not biphenotypic leukemia is allowed on this study.
- •Myelodysplastic syndromes with intermediate or high risk International Prognostic Scoring System score
- •Patient has not been administered any other systemic chemotherapeutic drug (including Mylotarg) within 21 days prior to trial enrollment (BMT Day -7 or day -9 for the test-dose arm of the study). Hydroxyurea is permitted if indicated to control induction refractory disease, and IT chemotherapy is allowed if indicated as maintenance treatment for previously diagnosed leptomeningeal disease, that has been in remission for at least 3 months prior to enrollment on this study).
- •No active infection. Protocol PI will be final arbiter if there is uncertainty regarding whether a previous infection is resolved.
- •Patients must have a matched related or unrelated donor willing to donate. A donor who is HLA identical or mismatched in 1 locus on Class I [HLA, A or B], or molecularly mismatched in 1 locus on Class II [HLA, DR or DQ] is also acceptable.
- •ZUBROD performance status <2
- •Life expectancy is not severely limited by concomitant illness and expected to be >12 weeks.
- •Left ventricular ejection fraction >45% No uncontrolled arrhythmias or symptomatic cardiac disease.
- •No symptomatic pulmonary disease. Forced expiratory volume at one second (FEV1), forced vital capacity (FVC) and diffusion capacity of lung for carbon monoxide (DLCO) >/= 50% of expected corrected for hemoglobin. In patients </= 7 years pulmonary function will be assessed per pediatric BMT routine
- •Serum creatinine </= 1.5 mg%.
- •Serum glutamate pyruvate transaminase (SGPT) </= 200 IU/ml, serum bilirubin and alkaline phosphatase within accepted laboratory standard normal limits or considered not clinically significant. No evidence of chronic active hepatitis or cirrhosis. If positive hepatitis serology, discuss with Study Chairman and consider liver biopsy.
- •No effusion or ascites >1L prior to drainage.
- •HIV-negative.
- •Female patient is not pregnant (negative B-human chorionic gonadotropin (HCG) pregnancy test in all women of child-bearing-potential in accordance with departmental routine).
- •Patient or patient's legal representative, parent(s) or guardian able to sign informed consent.
- •No prior autologous stem cell transplants
排除标准
- 未提供
研究组 & 干预措施
Fixed-Dose Busulfan + Fludarabine
Busulfan Fixed Dose = 130 mg/m^2 IV Daily Over Three Hours x 4 Days. Fludarabine 40 mg/m^2 IV Daily Over 1 Hour x 4 Days.
干预措施: Busulfan (Drug)
Fixed-Dose Busulfan + Fludarabine
Busulfan Fixed Dose = 130 mg/m^2 IV Daily Over Three Hours x 4 Days. Fludarabine 40 mg/m^2 IV Daily Over 1 Hour x 4 Days.
干预措施: Fludarabine (Drug)
Adjusted Dose Busulfan + Fludarabine
Busulfan Adjusted Dose = 32 mg/m^2 IV Over 2 Hours Test Dose x 1 Day. Fludarabine 40 mg/m^2 IV Daily Over 1 Hour x 4 Days.
干预措施: Busulfan (Drug)
Adjusted Dose Busulfan + Fludarabine
Busulfan Adjusted Dose = 32 mg/m^2 IV Over 2 Hours Test Dose x 1 Day. Fludarabine 40 mg/m^2 IV Daily Over 1 Hour x 4 Days.
干预措施: Fludarabine (Drug)
结局指标
主要结局
Treatment-related Mortality (TRM)
时间窗: From transplant at Day 0 to Day 100 and 1 year following transplant
Time to failure (TTF) defined as either disease recurrence or death, from the time of bone marrow transplant (BMT) and reported as TRM at 100 days and 1 year. Treatment period defined as BMT Day -9 for patients treated on the PK-guided treatment arm, and day -7 for patients receiving the fixed-dose busulfan treatment through BMT Day +28. The post study surveillance period is defined as BMT Day +29 through BMT Day +100. Bone marrow aspirate with cytogenetics at approximately one (1) month and three (3) months, or as clinically indicated. Response Criteria is measured by the bone marrow aspirate to determine it has leukemic blast. Bone marrow blast less than 5% is considered to be a complete response.
3 Year Progression Free Survival
时间窗: 3 years
PFS defined as length of time either due to disease recurrence or death, from the time of stem cell infusion (Bone marrow or PBPC) to 3 years. Response Criteria is measured by the bone marrow aspirate to determine it has leukemic blast. Bone marrow blast less than 5% is considered to be a complete response.
次要结局
未报告次要终点