NCT06368817 · Children's Oncology Group
A Study of Lower Radiotherapy Dose to Treat Children With CNS Germinoma
What this study is about
This phase II trial studies how well lower dose radiotherapy after chemotherapy (Carboplatin \& Etoposide) works in treating children with central nervous system (CNS) germinomas. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. Carboplatin is in a class of medications known as platinum-containing compounds.
View original scientific description
This phase II trial studies how well lower dose radiotherapy after chemotherapy (Carboplatin \& Etoposide) works in treating children with central nervous system (CNS) germinomas. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. Carboplatin is in a class of medications known as platinum-containing compounds. It works in a way similar to the anticancer drug cisplatin, but may be better tolerated than cisplatin.
Interventions
RADIATION
3-Dimensional Conformal Proton Radiation Therapy
Undergo 3D-CPRT
RADIATION
3-Dimensional Conformal Radiation Therapy
Undergo 3D-CRT
PROCEDURE
Biospecimen Collection
Undergo blood and CSF sample collection
DRUG
Carboplatin
Given IV
DRUG
Etoposide
Given IV
PROCEDURE
Intensity-Modulated Proton Therapy
Undergo IMPT
RADIATION
Intensity-Modulated Radiation Therapy
Undergo IMRT
PROCEDURE
Lumbar Puncture
Undergo LP
PROCEDURE
Magnetic Resonance Imaging
Undergo MRI
OTHER
Questionnaire Administration
Ancillary studies
PROCEDURE
Surgical Procedure
Undergo second-look surgery
Primary outcome measures
Event-free survival (EFS) (Stratum I)
Time frame: Evaluated at 2- and 3-years post-radiation initiation
Will be estimated for eligible and evaluable patients assigned to Stratum 1 using Kaplan-Meier (KM) EFS estimates at 2 and 3 years with respective 80% two-sided confidence intervals. Time from initiation of radiation to the first occurrence of any of the following events: biochemical or radiographic disease progression, disease recurrence, second malignant neoplasm, or death from any cause.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Patients must be ≥ 3 years and \< 30 years at the time of study enrollment
- Patients must be newly-diagnosed primary localized germinoma of the suprasellar and/or pineal region by pathology and/or serum and/or CSF hCGbeta 5-50 mIU/mL AND institutional normal AFP (or ≤ 10 ng/mL if no institutional normal exists), including tumors with contiguous ventricular or unifocal parenchymal extension. No histologic confirmation required
- Patients with EITHER (A) bifocal (pineal + suprasellar) involvement OR (B) pineal lesion with diabetes insipidus (DI) AND hCGbeta ≤ 100 mIU/mL in serum and/or CSF AND institutional normal AFP (or ≤ 10 ng/mL if no institutional normal exists) in both serum and CSF. No histologic confirmation required
- Patients with hCGbeta 51-100 mIU/mL in serum and/or CSF and institutional normal AFP (or ≤ 10 ng/mL if no institutional normal exists) in both serum and CSF. Histologic confirmation of germinoma IS required
- Patients with germinoma of the b
Where
- Mobile, Alabama
- Phoenix, Arizona
- Little Rock, Arkansas
- Loma Linda, California
- Los Angeles, California
- Oakland, California
- Orange, California
- Palo Alto, California
- San Diego, California
- San Francisco, California
- Aurora, Colorado
- Hartford, Connecticut
And 66 more locations — see the full list below.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced May 4, 2026 · Source of record for eligibility and locations