NCT07373067

Repeat Intracerebroventricular Injections of RB-ADSC in Subjects Previously Treated in RBI Protocol RB-ADSC-02

A Phase 1b Extension Trial To Allow Repeat Intracerebroventricular Injections of Ex Vivo Expanded, Autologous Adipose-Derived Stem Cells (RB-ADSCs) in Subjects Previously Treated in RBI Protocol RB-ADSC-02

• Status: Not Yet Recruiting
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 9 (estimated)
• Sponsor: Regeneration Biomedical, Inc. · Industry
• Sex: All
• Age: 45 Years
• Healthy volunteers: Not accepted

Summary

This is a Phase 1b Extension Trial to allow repeat intracerebroventricular injections of RB-ADSCs in subjects previously treated in and successfully completed RBI Protocol RB-ADSC-02. In the previous Phase 1 clinical trial, RB-ADSC-02, subjects with mild to moderate Alzheimer's disease (AD) received a single intraventricular injection of RB-ADSC. RB-ADSC will be delivered intracerebroventricularly every 2 months via the previously implanted Ommaya reservoir for up to 6 injections in total. The primary objective of safety is performed 2 months after the last dose administration at the month 12 follow-up visit. The secondary objective endpoint evaluations of efficacy are performed at the month 6 and 12 visits.

Detailed description

This is a Phase 1b Extension Trial to allow repeat intracerebroventricular injections of RB-ADSCs in subjects previously treated in and successfully completed RBI Protocol RB-ADSC-02. In the previous Phase 1 clinical trial, RB-ADSC-02, subjects with mild to moderate Alzheimer's disease (AD) received a single intraventricular injection of RB-ADSC. RB-ADSC will be delivered intracerebroventricularly every 2 months via the previously implanted Ommaya reservoir for up to 6 injections in total. Participants will be followed for 2 months after the last administration. The primary objective is safety and tolerability of repeated dosing of RB-ADSC. Adverse events (AEs) and serious adverse events (SAEs) will be assessed by the incidence and severity of dose-limiting toxicity (DLT) and other AEs, incidence and severity of cytokine response syndrome, vital sign measurements, clinical laboratory tests and physical examination. Preliminary efficacy of repeated dosing will be evaluated with clinical assessments (MMSE, FAST, ADAS-Cog), volumetric MRI (NeuroQuant), CSF biomarkers (phosphor-Tau, total-Tau,AB-42), and diagnostic imaging comparison (Amyloid-PET).

Conditions

• Alzheimer Disease

Interventions

Type	Name	Description
BIOLOGICAL	RB-ADSC	Ex Vivo Expanded, Autologous Adipose-Derived Stem Cells (ADSCs)

Timeline

• Start date: 2026-01-01
• Primary completion: 2028-01-01
• Completion: 2028-01-01
• First posted: 2026-01-28
• Last updated: 2026-01-28

Regulatory

• FDA-regulated drug study