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New radiation approach aims to make stem cell transplants safer for kids

NCT ID NCT06075563

Disease control Sponsor: Hong Kong Children's Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study compares a new radiation technique called total lymphoid irradiation (TLI) to the standard total body irradiation (TBI) for children aged 0-18 who need a stem cell transplant from a half-matched donor. The goal is to see if TLI reduces complications like graft-versus-host disease and graft failure while still controlling the underlying disease. About 23 children will be enrolled, and researchers will track their health for up to one year after the transplant.

What this could mean

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

Active substance
Total lymphoid irradiation (radiation therapy)
What this could lead to
If successful, this could offer a safer conditioning option for children needing stem cell transplants, potentially reducing serious side effects like graft-versus-host disease.
What could go wrong
This is a small, early-stage study with only 23 participants, so results may not apply broadly. The new radiation method might not work as well as the standard one, and risks like infection or graft failure remain.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 23 people

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

Started

May 2023

Expected to finish

Dec 2026

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

Up to 18 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: * Aged 0-18 years who requires allogeneic HSCT, has no human leukocyte antigen (HLA)-matched sibling donor but has an HLA-haploidentical donor. * Adequate organ function to tolerate the conditioning chemotherapy and radiotherapy * Karnofsky or Lansky performance status score ≥50 Exclusion Criteria: * Pregnant or lactating woman * HIV infection * Patients for whom alternative treatment is deemed more appropriate by treating physician * Patients who are unlikely to benefit from haploidentical hematopoietic stem cell transplantation, e.g., terminal malignancy with multiorgan failure

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Conditions

The condition(s) this trial relates to.

cancer disease hematologic disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hematopoietic organs; disorder

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

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

  2. 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 ↗

  3. 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

  • Hong Kong Children's Hospital

    RECRUITING

    Hong Kong, Hong Kong

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