A Phase IIa Study of Allogeneic Human Mesenchymal Stem Cells in Subjects With Mild to Moderate Dementia Due to Alzheimer's Disease

STEM105-M-AD

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.

2016-06-01

2024-07-30

2024-12-31

Recruiting

Early phase I

40

Inclusion Criteria: 1. Males or females between 55-80 years of age. 2. Diagnosed with mild to moderate dementia for at least 3 months prior to enrollment, based on the National Institute of Neurological and Communicative 3. Disorders and Stroke and the Alzheimer's Disease and Related Disorders Association (NINDS-ADRDA) Alzheimer's criteria. 4. MMSE between 12-24 (inclusive) at time of enrollment. 5. Amyloid-positive florbetapir PET scan. Exclusion Criteria: 1. Prior treatment with stem cells. 2. History of intracranial, subdural, or subarachnoid hemorrhage. 3. 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. 4. History of cancer within the past 5 years, with the exception of localized basal or squamous cell carcinoma. 5. History of seizure disorder. 6. Diagnosis of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). 7. History of cerebral neoplasm. 8. Myocardial infarction within six months of enrollment.

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2022-10-28