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Stem cell harvest trial aims to unlock gene therapy for rare blood disorders

NCT ID NCT07585136

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Sep 01, 2026 · Updated 4 times

Summary

This early-phase study at St. Jude Children's Research Hospital will test whether it is safe and possible to collect blood stem cells from 12 young adults with inherited bone marrow failure syndromes. Participants will receive two drugs (filgrastim and plerixafor) to move stem cells into the bloodstream, then undergo a procedure called leukapheresis to collect them. The goal is not to treat the disease directly, but to advance research into gene therapies that could one day correct the underlying genetic cause.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Filgrastim and plerixafor (drugs to mobilize stem cells), followed by leukapheresis (procedure to collect stem cells)
What this could lead to
If successful, this study could show that collecting stem cells from patients with bone marrow failure is safe and feasible, paving the way for future gene therapies.
What could go wrong
This is a very small, early-phase trial (12 participants) focused on safety and feasibility, not treatment. The approach may not work or could cause side effects like low blood counts or infection.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 12 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Nov 2026

An estimate. Start dates often move.

Expected to finish

Jul 2029

An estimate. End dates often move.

Lead sponsor

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

18 to 25 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Participants with a bone marrow failure syndrome with an identified genetic cause willing to donate autologous HSPCs for advancing gene therapy * Age ≥ 18 years - 25 years * The following hematological parameters need to be met (regardless of transfusion or growth factor support) * Hb \> 8 g/dL * ANC \> 500/mm3 * Platelet \> 30,000/mm3 * Bone marrow evaluation within the preceding 6 months prior to mobilization and apheresis * Participants should either have a central venous catheter (CVC) in place, be able to undergo apheresis without requiring a CVC, or agree to having a temporary apheresis catheter placed * Karnofsky score \>80 * Negative serologic tests for syphilis, hepatitis B and C, HIV, and HTLV-1/II * Female participants of childbearing age should have a negative serum pregnancy test within one week of beginning Filgrastim and plerixafor administration Exclusion Criteria: * Participant with sickle cell disease * Participant who has had a prior autologous or allogeneic HSCT * Active viral, bacterial, fungal, or parasitic infection * Total bilirubin \>2.5x ULN or transaminases \>5x ULN * Moderate or severe renal failure defined as serum/plasma creatinine \>1.5 mg/dL and an estimated glomerular filtration rate (eGFR) \< 60 mL/min/1.73 m2 based on the CKD-Epi equation or the St. Jude equation * Diagnosis of MDS or other hematologic malignancy * History of malignancy * Known allergy to or contraindication for Filgrastim or plerixafor administration, or medications routinely administered during apheresis * Splenomegaly (size greater than upper limit of normal on examination) * Any disease or concomitant process that is not compatible with the study as per investigator opinion * Concomitant treatment with alternative investigational agent or participation in another clinical trial with an investigational drug within 5 half-lives of the investigational agent * Unwillingness to use a highly effective method of contraception for 1 month after plerixafor or GCSF * Pregnancy * Inability or unwillingness of research participant to give written informed consent.

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Conditions

The condition(s) this trial relates to.

Bone Marrow Failure Disorders bone marrow failure syndrome

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.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Saint Jude Children's Research Hospital

    Memphis, Tennessee, 38105-2794, United States

    Contact Email: •••••@•••••

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