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Weekly scans may make proton therapy safer for kids with cancer

NCT ID NCT07514819

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 21, 2026 · Updated 3 times

Summary

This study will enroll 100 children with solid tumors or Hodgkin lymphoma who are receiving proton therapy. Researchers will take weekly or bi-weekly CT or MRI scans during treatment to check if the original radiation plan is still accurate. If tumor coverage drops by 5% or radiation to healthy organs rises by 10%, the plan will be updated. The goal is to see how often adjustments are needed and which tumors change most during treatment.

What this could mean

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

Active substance
Proton therapy with adaptive replanning
What this could lead to
If successful, this approach could make proton therapy more precise for children, potentially reducing damage to healthy tissues and improving tumor control.
What could go wrong
This is an early-stage observational study with no control group, so it cannot prove that adaptive planning improves outcomes. The findings may not apply to all tumor types or treatment centers.

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 100 people

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

Started

Aug 2026

Expected to finish

Aug 2031

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

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 diagnosed with solid tumors, including Rhabdomyosarcoma, Osteosarcoma, Ewing sarcoma, other sarcomas and carcinomas or also Hodgkin's lymphoma. * Participants who receive proton radiation therapy at St. Jude Children's Research Hospital. * Research participant or legal guardian/representative gives written informed consent. Exclusion Criteria: * Participants who are not diagnosed with solid tumors or Hodgkin's lymphoma. * Participants who are diagnosed with Wilm's tumor or neuroblastoma * Participants who do not undergo proton therapy. * Participants who are prescribed equal or less than 5 fractions of proton therapy. * Participants with severe comorbid conditions that may impact imaging feasibility. * Inability to obtain written consent from research participant or legal guardian/representative. * Females of child-bearing potential cannot be pregnant or breast-feeding. Female participants \>10 years of age or post-menarchal must have a negative serum or urine pregnancy test All participants receiving proton therapy at St. Jude Children's Research Hospital will be screened for participation on this research protocol based on the Inclusion Criteria and the Exclusion Criteria. Qualified candidates will be selected during the consultation.

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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.

  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

  • St. Jude Children's Research Hospital

    RECRUITING

    Memphis, Tennessee, 38105, United States

    Contact Email: •••••@•••••

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