Human Mesenchymal Stem Cells & Monoclonal Antibodies in the Treatment for Mild Cognitive Impairment or Early Alzheimer's Disease.

May 26, 2026 updated by: Bernard (Barry) Baumel

A Pilot Study to Assess the Effect of Adding 1 Infusion of Human Mesenchymal Stem Cells (hMSC) to Patients Treated With Anti-Amyloid Monoclonal Antibodies Who Are Suffering From Mild Cognitive Impairment or Mild Alzheimer's Disease.

The purpose of this study is to test if adding one infusion of (Human Mesenchymal Stem Cells) hMSCs to the treatment with standard of care (SOC) monoclonal antibodies (mAb) will stabilize the rate of cognitive and functional decline associated with mild Alzheimer's Disease.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

10

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • United States
    • Florida
      • Miami, Florida, United States, 33136
        • Recruiting
        • University of Miami Department of Neurology
        • Contact:
        • Principal Investigator:
          • Bernard S Baumel, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adults 55-90 years at the time of signing consent
  • Patients diagnosed with Mild Cognitive Impairment or mild Dementia due to Alzheimer disease, receiving treatment with an FDA approved monoclonal antibody (Leqembi/Lecanemab or Kisunla/Donanemab) for at least 6 months prior to the infusion visit.
  • MMSE score 20-26.
  • Patients must be able to consent.
  • Have a family member or friend (study partner) who has frequent and sufficient contact with the patient and is able to answer questions about the participant's daily activities to complete the ADCS-MCI-ADL. Completing this scale is required to assess the impact of the study intervention on cognitive function and daily living skills in this patient population. Having a study partner is a requirement of this study.

Exclusion Criteria:

  • Dementia other than AD
  • Patient with severe depression. Patients with controlled depression are allowed to participate.
  • Inability to independently provide informed consent is considered exclusionary per protocol requirements
  • Recent history of substance abuse
  • History of bleeding disorders, HIV, HCV or HBV
  • Recent history (within 3 years) of malignancies, except for treated basal cell, squamous carcinoma or melanoma in situ, prostate in situ, cervical carcinoma in situ.
  • Uncontrolled medical conditions (hypertension, diabetes, unstable angina or MI within 1 year prior to screening)
  • History of bleeding disorder
  • Currently receiving (or received within four weeks of screening) experimental agents for the treatment of Alzheimer's Disease or enrolled in clinical trials in the prior 3 months.
  • Be a transplant recipient or in any other active medical condition than in the opinion of the investigator may compromise the safety or compliance of the patient or preclude successful completion of the study
  • Be premenopausal

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Mesenchymal Stem Cell Infusion
Patients will receive one infusion of 25 million of human mesenchymal stem cells in the vein.
Biological: human Mesenchymal Stem Cells
Patients eligible to participate will receive one infusion of 25 million cells administered intravenously.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Alzheimer's Disease Scale-Cognitive Subscale (ADAS-Cog)
Time Frame: Baseline, Week 16, Week 32, and Week 48
The Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog-11) is a validated performance-based instrument used to assess the severity of cognitive impairment in individuals with Alzheimer's disease. The scale evaluates multiple cognitive domains, including memory, reasoning, language, orientation, ideational praxis, and constructional praxis. Spoken language, language comprehension, word-finding ability, and the ability to remember instructions are also assessed. Scores range from 0 to 70, with higher scores indicating greater cognitive impairment.
Baseline, Week 16, Week 32, and Week 48

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Alzheimer's Disease Cooperative Study Activities of Daily Living Inventory for Mild Cognitive Impairment (ADCS-MCI -ADL)
Time Frame: Baseline, Week 16, Week 32, and Week 48
The Alzheimer's Disease Cooperative Study Activities of Daily Living Inventory for Mild Cognitive Impairment (ADCS-MCI-ADL) is an 18-item caregiver-reported instrument assessing basic and instrumental daily activities. Total scores range from 0 to 57, with higher scores indicating greater functional independence.
Baseline, Week 16, Week 32, and Week 48

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Bernard (Barry) Baumel

Investigators

  • Principal Investigator: Bernard S. Baumel, MD, University of Miami

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 15, 2026

Primary Completion (Estimated)

June 15, 2028

Study Completion (Estimated)

June 15, 2028

Study Registration Dates

First Submitted

March 23, 2026

First Submitted That Met QC Criteria

March 30, 2026

First Posted (Actual)

April 6, 2026

Study Record Updates

Last Update Posted (Actual)

May 28, 2026

Last Update Submitted That Met QC Criteria

May 26, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 20251381

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

De-identified IPD will be shared with researchers upon request following institutional guidelines and agreements in place. IPD will be shared after study publication.

IPD Sharing Time Frame

Post study publication.

IPD Sharing Access Criteria

Qualified researchers will have access to de-identified study data upon request to the study Principal Investigator (Dr. Barry Baumel). Results of cognitive and QOL scales will be provided via email upon request.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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