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Stem Cell Injections for Mild to Moderate Alzheimer's Disease

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What is being tested

RB-ADSC

+ Placebo

BiologicalOther
Who is being recruted

Alzheimer Disease+6

+ Mental Disorders

+ Brain Diseases

From 45 to 85 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Placebo-ControlledPhase 2
Interventional
Study Start: November 2025
See protocol details

Summary

Principal SponsorRegeneration Biomedical, Inc.
Study ContactRobert Lynn
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: November 1, 2025

Actual date on which the first participant was enrolled.

This clinical trial is exploring a new treatment approach for individuals with mild to moderate Alzheimer's disease, using stem cells derived from the patient's own body fat. These stem cells, called RB-ADSCs, are expanded and prepared outside the body to activate certain helpful cells. The study aims to determine if this treatment is safe, well-tolerated, and effective in slowing down or improving symptoms of Alzheimer's disease. Alzheimer's disease is a progressive condition that affects memory and thinking skills, and finding innovative treatments is crucial to improve the quality of life for those affected. Participants in the study will receive these stem cells through a device implanted under the scalp, called an Ommaya reservoir, which allows the cells to be delivered directly to the brain. The treatment occurs every two months over a period of 10 months, with a total of up to six injections. Researchers will evaluate the impact of the treatment on cognitive functions and specific markers in the brain fluid. Safety is also closely monitored using brain scans and imaging techniques. After the initial study period, those who received a placebo may switch to receive the stem cell treatment. This study's findings could provide valuable insights into the potential benefits and risks of using stem cells to treat Alzheimer's disease.

Official TitlePhase 2a Assessment of Safety, Tolerability, and Efficacy of Repeated Dosing of Intracerebroventricular Injections of Ex Vivo Expanded, Autologous Adipose-Derived Stem Cells (RB-ADSCs) in Participants With Mild to Moderate Alzheimer's Disease
NCT07205601
Principal SponsorRegeneration Biomedical, Inc.
Study ContactRobert Lynn
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

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

115 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 45 to 85 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Alzheimer DiseaseMental DisordersBrain DiseasesCentral Nervous System DiseasesDementiaNervous System DiseasesNeurodegenerative DiseasesNeurocognitive DisordersTauopathies

Criteria

Inclusion Criteria: * ≥45 and ≤85 years of age * Mild to moderate AD diagnosis * FAST stage 4 or 5 * MMSE 10-23 * Amyloid PET scan centiloid score \>30 * ADmark® CSF analysis of ATI (\<1.0) and P-Tau (\>60) * No tumors or other disease responsible for dementia * Participant otherwise in good general health * Written informed consent from participant or legal representative * Participant must have caregiver who separately meets specified inclusion/exclusion criteria for caregivers * Participant must be able to donate adequate amount of lipoaspirate to establish the final product Exclusion Criteria: * Taking prohibited medications * Prior cell therapy implantation * Existing ventriculoperitoneal shunts * Neurological disorders except AD * Psychiatric disorders such as schizophrenia, bipolar/unipolar depression, delirium * Drug or alcohol abuse in past 2 years * History of cancer within the past 5 years * No caregiver available to meet the inclusion criteria for caregivers * Involvement in other investigational product clinical trial within the past 3 months for monoclonal antibodies, or 6 months for other investigational products

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

3 intervention groups are designated in this study

33.333% chance of being blinded to the placebo group

Treatment Groups

Group I

Experimental
Participants will receive repeated doses of 5x10\^6 RB-ADSC infused in the previously implanted Ommaya reservoir

Group II

Experimental
Participants will receive repeated doses of 2.5x10\^6 RB-ADSC infused in the previously implanted Ommaya reservoir

Group III

Placebo
Participants will receive placebo comparator in the previously implanted Ommaya reservoir

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
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Stem Cell Injections for Mild to Moderate Alzheimer's Disease | PatLynk