A Phase IIa Study of Allogeneic Human Mesenchymal Stem Cells in Subjects With Mild to Moderate Dementia Due to Alzheimer's Disease
试验速览
- 阶段
- 2 期
- 状态
- 招募中
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Safety of aMBMC administration
研究概览
简要总结
STUDY OBJECTIVES
Primary:
To assess the safety and tolerability of ischemia-tolerant allogeneic human mesenchymal stem cells (hMSCs) manufactured by Stemedica versus placebo administered intravenously to subjects with mild to moderate dementia due to Alzheimer's disease.
Secondary:
To assess the preliminary efficacy of hMSCs versus placebo in subjects with Alzheimer's-related dementia, as evidenced by neurologic, functional, and psychiatric endpoints.
详细描述
This is a Phase IIa multi-center, randomized, single-blind, placebo-controlled, crossover study in subjects with mild to moderate dementia due to Alzheimer's disease. Only the subject and their caregiver will be blinded to the study treatment. The study will consist of two cohorts of subjects (20 subjects per cohort), randomized in a 1:1 allocation to receive active study drug or placebo. Cohort 1 will receive a single intravenous dose of hMSCs of 1.5 million cells per kilogram body weight on their Study Day 1, and Cohort 2 will receive equal volume of Lactated Ringer's Solution on their Study Day 1. At the six-month time point for each subject after their first infusion, Cohort 1 will receive a single intravenous dose of Lactated Ringer's Solution and Cohort 2 will receive a single intravenous dose of hMSCs at 1.5 million cells per kilogram of the subject's body weight. Approximately 40 subjects will be enrolled in this study. An independent Data and Safety Monitoring Board will conduct periodic safety reviews.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 55 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Males or females between 55-80 years of age.
- •Diagnosed with mild to moderate dementia for at least 3 months prior to enrollment, based on the National Institute of Neurological and Communicative
- •Disorders and Stroke and the Alzheimer's Disease and Related Disorders Association (NINDS-ADRDA) Alzheimer's criteria.
- •MMSE between 12-24 (inclusive) at time of enrollment.
- •Amyloid-positive florbetapir PET scan.
排除标准
- •Prior treatment with stem cells.
- •History of intracranial, subdural, or subarachnoid hemorrhage.
- •Subjects with baseline brain MRI showing more than four (4) cerebral microhemorrhages (regardless of their anatomical location or diagnostic characterization as "possible" or "definite"), and/or one (1) or more areas of superficial siderosis, and/or evidence of a prior macrohemorrhage. MRI must include fluid-attenuation inversion recovery (FLAIR) and T2*-weighted gradient-recalled-echo (GRE) sequences.
- •History of cancer within the past 5 years, with the exception of localized basal or squamous cell carcinoma.
- •History of seizure disorder.
- •Diagnosis of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL).
- •History of cerebral neoplasm.
- •Myocardial infarction within six months of enrollment.
研究组 & 干预措施
Stem Cells
Stem cells
干预措施: Human Mesenchymal Stem Cells and Lactated Riunger's Solution (Drug)
Placebo
Lactated Ringer's Solution
干预措施: Placebo (Other)
结局指标
主要结局
Safety of aMBMC administration
时间窗: 18 months
Number of patients with adverse events will be reported
次要结局
- Efficacy of aMBMC administration(18 months)