One-Time gene therapy for fatal childhood brain disease: does it last?
NCT ID NCT02698579
First seen Sep 14, 2026 · Last updated Sep 15, 2026 · Updated 1 time
Summary
Researchers are following 64 people with cerebral adrenoleukodystrophy (CALD) for 15 years after they received a one-time gene therapy called eli-cel in earlier studies. The therapy uses the patient's own stem cells, modified to carry a working copy of the gene that is faulty in CALD. This follow-up study tracks whether the treatment keeps working and monitors for long-term side effects like new cancers, immune problems, or worsening nerve symptoms. No new drug is given; participants simply continue to be evaluated.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a one-time gene therapy called elivaldogene autotemcel (eli-cel), made from the patient's own modified stem cells
- What this could lead to
- If the gene therapy holds up, it could offer a lasting, one-time treatment that stops the devastating brain damage of cerebral adrenoleukodystrophy and removes the need for a donor stem cell transplant.
- What could go wrong
- This is a long-term follow-up study, not a new treatment trial, so it cannot prove the therapy works on its own. Gene therapies carry known risks, including the chance of new blood cancers or immune reactions, and some participants may still need another transplant.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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64 people
The number who actually took part.
- Started
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Jan 2016
- Expected to finish
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Aug 2038
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Participants with cerebral adrenoleukodystrophy (CALD) who have received Lenti-D Drug Product in a parent clinical study will be expected to participate in this long-term follow-up study.
- Ages
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Up to 19 years
- Sex
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Male participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Provision of written informed consent for this study by the participant or participant's parent(s)/ legal guardian(s) and written informed assent by participant, if applicable * Have received eli-cel in a parent clinical study Exclusion Criteria: * There are no exclusion criteria for this study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Boston Children's Hospital/Massachusetts General Hospital
Boston, Massachusetts, 02115, United States
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Great Ormond Street Hospital
London, England, United Kingdom
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Hospital das Clínicas da Universidade de São Paulo
São Paulo, 05403-000, Brazil
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Hôpital Bicêtre
Le Kremlin-Bicêtre, Cedex, 94275, France
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Instituto Neurogenia
Caba, Argentina
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Lucile Packard Children's Hospital - Stanford
Palo Alto, California, 94304, United States
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Mattel Children's Hospital-UCLA
Los Angeles, California, 90095, United States
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Ospedale Pediatrico Bambino Gesù
Rome, 00165, Italy
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Prinses Maxima Center
Utrecht, 3584, Netherlands
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Royal Free London Hospital
London, England, NW3 2QG, United Kingdom
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University of Minnesota
Minneapolis, Minnesota, 55455, United States
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Universitätsklinikum Leipzig AöR
Leipzig, 04103, Germany
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Women's and Children's Hospital
North Adelaide, Australia
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