Personalized anti-inflammatory T cell therapy for ALS

Intermediate-Size Expanded Access Trial of Autologous Hybrid TREG/Th2 Cell Therapy (RAPA-501) of Amyotrophic Lateral Sclerosis

['FUNDING_U01'] · MASSACHUSETTS GENERAL HOSPITAL · NIH-11376007

This program offers a treatment using your own modified immune cells (RAPA-501) to reduce nerve inflammation for people with ALS who have low lung capacity.

Quick facts

Phase['FUNDING_U01']
Study typeNih_funding
SexAll
SponsorMASSACHUSETTS GENERAL HOSPITAL (nih funded)
Locations1 site (BOSTON, UNITED STATES)
Trial IDNIH-11376007 on ClinicalTrials.gov

What this research studies

You would have some of your own T cells collected and modified in the lab to boost regulatory and anti-inflammatory activity before they are returned to you. The product, called RAPA-501, is designed to act without the need for chemotherapy conditioning. This expanded access effort is for people with ALS who have a slow vital capacity (SVC) below 50% and who are not eligible for the ongoing phase 2/3 trial. The team has seen safety and early biological activity in ongoing work and aims to offer this option to higher-risk patients facing rapid respiratory decline.

Who could benefit from this research

Good fit: People with ALS who have SVC (slow vital capacity) below 50% and who are not eligible for the ongoing phase 2/3 trial are the primary candidates for this expanded access program.

Not a fit: People without ALS or people with ALS who have relatively preserved lung function (SVC ≥50%) or who are already enrolled in the phase 2/3 trial may not be eligible or benefit from this program.

Why it matters

Potential benefit: If successful, the therapy could slow respiratory decline and lower the risk of respiratory failure or death in high-risk people with ALS.

How similar studies have performed: An ongoing clinical trial of RAPA-501 (NCT04220190) has reported safety and biological anti-inflammatory activity with early trends toward stabilizing lung function, but definitive efficacy is not yet proven.

Where this research is happening

BOSTON, UNITED STATES

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.

View on NIH RePORTER →

Conditions: Amyotrophic Lateral Sclerosis Motor Neuron Disease

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.