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Massive study tracks 1,100+ kids after cancer treatment to uncover hidden risks

NCT ID NCT05564026

Knowledge-focused Sponsor: Children's Oncology Group 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study follows over 1,100 children who were treated for germ cell tumors (a type of cancer). Researchers want to learn about long-term side effects like hearing loss and to analyze tumor DNA to better predict which children might have their cancer come back. Participants provide health questionnaires and blood or saliva samples, but no new treatments are being tested.

What this could mean

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

What this could lead to
If successful, this study could help doctors better predict which children are at risk for treatment side effects or relapse, leading to more personalized care.
What could go wrong
This is an observational study, not a treatment trial, so it won't directly help participants. Results may take years and might not change current practice.

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.

Participants

About 1,151 people

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

Started

Apr 2023

Expected to finish

Jun 2027

An estimate. End dates often move.

Lead sponsor

A research network

The lead sponsor is a research network or cooperative group.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Pediatric and adolescent Germ Cell Tumor survivors recruited from recently completed Children's Oncology Group (COG) epidemiology study (AEPI10N1) and the COG Project:EveryChild Registry (APEC14B1).

Ages

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

Sex

Anyone

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: * Cases will be eligible for the study if they have a primary diagnosis of GCT including germinoma (ICCC code105 9060-9065), teratoma (9080-9084), embryonal carcinoma (9070-9072), yolk sac tumor (9071), choriocarcinoma (9100, 9103, 9104), and mixed GCT (9085, 9101, 9102, 9105) in all sites including the brain. * The patient must be enrolled on APEC14B1 with consent to future contact or enrolled in AEPI10N1 with consent for future contact (N=827). Patients enrolled in AEPI10N1 were recruited from ACCRN07. All patients must be registered with COG by a North American member institution. Note: (history of) treatment on a COG therapeutic trial is not required. * Patients must be diagnosed at \< 20 years of age at the time of GCT diagnosis. Study participants will be followed over time in the survivorship study so there is no maximum age for participation. * Participants must be able to complete study related documents in English or Spanish. * All patients and/or their parents or legal guardians must provide informed consent. Assent will be obtained for participants between the ages of 8-17 years. * All institutional, FDA, and NCI requirements for human studies must be met. Exclusion Criteria: * Participants from AEPI10N1 who did not consent to future contact. Patients who do not meet the eligibility criteria described above or cannot complete study materials in English or Spanish

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Conditions

The condition(s) this trial relates to.

childhood germ cell tumor choriocarcinoma embryonal carcinoma Endodermal Sinus Tumor germ cell tumor germinoma mixed germ cell tumor Neoplasms, Germ Cell and Embryonal teratoma yolk sac tumor

As listed by the trial registrant

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

Choriocarcinoma Embryonal carcinoma Germ cell tumor Germinoma Late effects Mixed germ cell tumor Pediatric germ cell tumor Teratoma Yolk sac tumor

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

  • University of Minnesota

    RECRUITING

    Minneapolis, Minnesota, 55455, United States

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