Gene therapy could free kids from lifelong blood transfusions
NCT ID NCT07476183
First seen Jun 27, 2026 · Last updated Jul 22, 2026 · Updated 2 times
Summary
This early-stage trial tests a one-time gene therapy called APR-2020 in 4 children with a severe form of Diamond-Blackfan anemia. The treatment uses the child's own blood stem cells, modified to correct the genetic defect, and given back as an infusion. The goal is to see if it is safe and can reduce or end the need for regular blood transfusions.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- APR-2020 (gene-modified stem cells)
- What this could lead to
- If it works, this could reduce or eliminate the need for blood transfusions in children with Diamond-Blackfan anemia by correcting the genetic defect in their own stem cells.
- What could go wrong
- This is a very early phase 1 trial with only 4 participants, so safety and effectiveness are not yet proven. There are risks from the stem cell harvest and conditioning regimen, and the treatment may not work or could cause side effects.
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.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 4 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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Sep 2028
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.
- Ages
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2 to 25 years
- Sex
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Anyone
- 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.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Key Inclusion Criteria: 1. Confirmed diagnosis of RPS19-deficient DBA. 2. Signed informed consent by the subject or legally authorized representative. 3. Bone marrow analysis demonstrates normal cytogenetics except for RPS19-deficient DBA. 4. Between 2 and 25 years of age, inclusive. 5. Eligible for allogeneic marrow or stem cell transplant for DBA (noncritical cardiac and hepatic iron overload). 6. Corticosteroid resistance 7. Transfusion-dependent anemia 8. Willingness to return for long-term follow-up 9. Adequate renal and pulmonary function 10. Able to undergo hematopoietic stem cell transplant (HSCT) mobilization and apheresis procedures. Key Exclusion Criteria: 1. Availability of a suitable, consenting HLA-identical sibling donor. 2. Positive viral serology. 3. Clinically significant, active bacterial, viral, or fungal infection. 4. Any prior or current malignancy, myeloproliferative disorder, or myelodysplastic syndrome, except where therapy was curative excision (ie, in situ squamous cell carcinoma). 5. Any concerning cytogenetic abnormalities in hematopoietic cells. 6. Previous receipt of an allogeneic transplant or gene therapy. 7. Immediate family member with a known or suspected Familial Cancer Syndrome (including, but not limited to breast, colorectal, ovarian, prostate, and pancreatic cancers, excluding DBA). 8. Diagnosis of significant psychiatric disorder that could impact the subject's ability to participate in the study, in the opinion of the Investigator. 9. History of complex allo-immunization, as determined by the Investigator. 10. Female subjects who are lactating/breast feeding or who plan to breastfeed within 6 months following APR-2020 infusion. 11. Male and female subjects of childbearing potential who are unwilling to practice highly effective methods of birth control from screening until ≥ 6 months after APR-2020 infusion. 12. Female subjects with a positive serum pregnancy test at Screening or who are planning to become pregnant during the study period. 13. Liver disease, as evidenced by critical iron overload with magnetic resonance imaging (MRI) 14. Heart disease or Type 1 diabetes. 15. Evidence of significant pulmonary hypertension, per Investigator assessment. 16. Any other condition that would render the subject ineligible for HSCT, as determined by the Investigator. 17. Contraindication to stem cell or bone marrow aspiration, mobilization or collection including allergies to filgrastim or plerixafor. 18. Currently enrolled in another investigational drug study or received an investigational study drug or procedure within 90 days of study enrollment. 19. A physical, functional, or emotional status that would prevent giving informed consent, protocol compliance, or adequate follow-up. 20. An assessment by the Investigator that the subject or parents of the subject will not comply with the study procedures outlined in the study protocol. 21. Taking prohibited medications. 22. Has insufficient personal history of RBC transfusions over the 13 weeks prior to the end of screening.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Boston Children's Hospital
RECRUITINGBoston, Massachusetts, 02215, United States
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Stanford University - Stanford Children's Health
RECRUITINGStanford, California, 94304, United States