New bone marrow transplant trial offers hope for kids with severe blood disorders
NCT ID NCT03128996
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a bone marrow transplant from a family donor for children under 21 with severe non-cancer blood disorders like sickle cell disease, bone marrow failure, or immune problems. The goal is to see if the transplant can replace the diseased cells with healthy donor cells and control the disease. Participants will receive a reduced-intensity conditioning regimen before the transplant to help their body accept the new cells.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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About 29 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2017
- Expected to finish
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Apr 2033
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
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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1 day to 21 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.
Inclusion Criteria: * Nonmalignant disorder requiring bone marrow transplant including bone marrow failure syndromes, metabolic disorders, immunologic disorders, or hemoglobinopathy * For patients with sickle cell disease, must have one of the following severe manifestations: 1. Overt or silent stroke or persistently elevated transcranial doppler velocities despite transfusion therapy 2. Recurrent acute chest syndrome with significant respiratory compromise each time 3. Sickle nephropathy 4. Recurrent admissions for vaso-occlusive episodes resulting in prolonged opioid use and poor quality of life with interrupted school attendance activity 5. Red cell alloimmunization with the need for chronic transfusions 6. Recurrent osteonecrosis or multiple joint involvement from avascular necrosis * Patients with sickle cell disease must have hemoglobin S \< 30% within 30 days prior to beginning alemtuzumab * Age \</= 20.99 years at the time of enrollment * Performance score \>/= 50 * Left ventricular ejection fraction \> 40% or left ventricular shortening fraction \> 26% by echocardiogram * DLCO \> 40% (corrected for hemoglobin) or pulse oximetry with a baseline O2 saturation of \>/= 90% on room air if too young to perform PFTs * Serum creatinine \</= 1.5x upper limit of normal for age and/or GFR \> 70 mL/min/1.73m2 * Direct bilirubin \< 2x upper limit of normal for age * ALT and AST \< 5x upper limit of normal for age * Participants who have or are receiving \>/= 8 packed red blood cell transfusions for \>/= 1 year or \>/= 20 packed red blood cell transfusions (lifetime cumulative) will undergo liver MRI for estimation of hepatic iron content. 1\. Liver biopsy is indicated for hepatic iron content \>/= 7mg Fe/mg liver dry weight by liver MRI. Histologic examination of the liver must document for the absence of cirrhosis, bridging fibrosis, and active hepatitis * Female subjects of childbearing potential, must agree to practice 2 methods of contraception at the same time from the time of signing of informed consent through 12 months post transplant. Male subjects must agree to practice effective barrier contraception or practice true abstinence from the time of signing informed consent through 12 months post transplant. * Written informed consent must be obtained from all recipients in accordance with the guidelines of the institution's Human Studies Committee. Exclusion Criteria: * Patients who have an HLA-identical sibling who is able and willing to donate bone marrow * Patients with cirrhosis or established bridging fibrosis of the liver or active hepatitis * Uncontrolled bacterial, viral, or fungal infection within 6 weeks prior to enrollment * Evidence of HIV infection or known HIV positive serology * Patients who have received a previous stem cell transplant * Patients who have received an investigational drug or device or off-label use of a drug or device within 3 months of enrollment * Females who are pregnant or breast feeding * Patients with active autoimmune disease (e.g. sarcoidosis, lupus, scleroderma)
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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
4 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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Helen DeVos Children's Hospital
RECRUITINGGrand Rapids, Michigan, 49503, United States
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Nemours Children's Health
RECRUITINGWilmington, Delaware, 19803, United States
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Washington University School of Medicine
RECRUITINGSt Louis, Missouri, 63110, United States
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Yale School of Medicine
RECRUITINGNew Haven, Connecticut, 06510, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Gene editing offers hope for a One-Time sickle cell cure
- Can a One-Time gene infusion free patients from transfusions?
- Experimental drug targets bone marrow failure
- Second chance: milder prep for stem cell transplants may help when first fails
- Selective cell removal may tame stem cell Transplant's dangerous side effect
- New pill may help diabetics fast safely during ramadan