A Proof of Concept Study of Non-DNA Damaging DNMT1 Depletion Therapy for Myelodysplastic Syndrome
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 25
- 试验地点
- 2
- 主要终点
- Number of Patients With Response as Defined by IWG (International Working Group) Criteria for Myelodysplasia
研究概览
简要总结
RATIONALE: Decitabine may help myelodysplastic cells become more like normal stem cells. PURPOSE: This clinical trial studies differentiation therapy with decitabine in treating patients with myelodysplastic syndrome.
详细描述
PRIMARY OBJECTIVES:
I. Demonstrate that differentiation therapy with DNMT1 depleting but non-DNA damaging doses of decitabine is efficacious and can be administered weekly for > = 12 months. SECONDARY OBJECTIVES: I. Assess safety of the regimen.
II. Retrospectively compare study and standard regimen clinical responses. III. Assess the ability of a pharmacodynamic assay that measures DNMT1 depletion in peripheral blood white blood cells to predict clinical responses to decitabine.
IV. Assess PCR for aberrant methylation signature as an early marker of relapse. V. Identify biologic features of MDS that correlate with response to decitabine, thereby facilitating future patient selection.
VI. In cases of relapse or resistance, assess the role of the enzyme CDA in altering decitabine metabolism and preventing DNMT1 depletion.
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 —（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
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: cytogenetic analysis (Other)
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: flow cytometry (Other)
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: DNA methylation analysis (Other)
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: decitabine (Drug)
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: microarray analysis (Genetic)
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: gene expression analysis (Genetic)
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: pharmacological study (Other)
Arm I: decitabine
INDUCTION PHASE: Patients receive decitabine subcutaneously (SQ) twice weekly for 4 weeks or thrice weekly until achieving bone marrow blasts < 5%. MAINTENANCE PHASE: Patients then receive decitabine SQ twice weekly for up to 52 weeks in the absence of disease progression or unacceptable toxicity.
干预措施: polymorphism analysis (Genetic)
结局指标
主要结局
Number of Patients With Response as Defined by IWG (International Working Group) Criteria for Myelodysplasia
时间窗: Formal assessment at week 12 for study primary end-point (hematologic improvement).
Complete Response (CR) include less than 5% marrow blasts without evidence of dysplasia and normalization of peripheral blood counts, including a hemoglobin level of 110 g/L or more, a neutrophil count of 1.5 × 109/L or more, and a platelet count of 100 × 109/L or more. For PR, patients must demonstrate all CR criteria if abnormal before treatment except that marrow blasts should decrease by 50% or more compared with pretreatment levels, or patients may demonstrate a less-advanced MDS disease category than prior to treatment. Stable disease (SD) is defined by failure to achieve at least a partial response but no evidence of progression. Disease progression (DP) includes at least 50% decrease from maximum remission in granulocytes or platelets, reduction in hemoglobin by greater than or equal to 2g/dL, or transfusion dependence. Hematologic improvement (HI) includes hemoglobin increase by at least 1.5g/dL, reduction in transfusions, increase of platelets, increase of neutrophil count
次要结局
- Proportion of Patients With Bone Marrow Evidence of Cytotoxicity.(6 weeks after treatment)
- Proportion of Patients With Particular Genetic Abnormalities Detected by Whole Exome Sequencing Correlation With Clinical Response(Baseline)
- Number of Patients That Experience > Grade 2 Non-hematologic Toxicity by National Cancer Institute (NCI)/Cancer Therapy Evaluation Program (CTEP) v4 Criteria(up to 12 months of treatment)
- Proportion of Patients With Pharmacodynamic Evidence of Drug Effect.(6 weeks after treatment)
- Cytogenetic Response as Per IWG Criteria(at 12 months)
- Proportion of Patients With Bone Marrow Evidence of Terminal Differentiation Response to Therapy.(6 weeks after treatment)