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A Phase II Trial of Limited Surgery and Proton Therapy for Craniopharyngioma or Observation After Radical Resection

NCT01419067 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 112

Last updated 2026-04-29

No results posted yet for this study

Summary

The goal of this study is to determine the feasibility and safety of treating patients with a brain tumor known as craniopharyngioma with limited surgery and a 5mm clinical target volume margin in combination with proton therapy. Proton therapy will be indicated for patients with diagnosed craniopharyngioma who are not treated with radical surgery (gross-total resection). Irradiated patients will undergo a series of evaluations designed to evaluate the effects of proton therapy. Similar evaluations will be performed on patients treated with radical surgery. Proton therapy will include 30 treatment fractions administered 5 days per week. Weekly imaging will be a requirement to monitor for cyst expansion and target volume deformation.

Conditions

Interventions

PROCEDURE

Radical Surgery or Limited Surgery

Patients will be selected for radical surgery based on the neurosurgeon's assessment that a Gross-Total Resection may be achieved with acceptable post-operative morbidity. The goal of surgical intervention in this study should be to facilitate tumor control, keeping surgical morbidity to a minimum. Common indications for surgical intervention directed at the tumor will include establishing a tissue diagnosis, tumor control by radical resection, relieving tumor mass effect to reduce symptoms and decreasing the target volume for proton therapy by planned volume reduction surgery. These indications can be achieved through radical or limited surgery.

DEVICE

Proton Therapy

Proton therapy will be started once a final treatment plan has been developed and approved. There is no time limit for the interval from enrollment to when proton therapy commences. The total prescribed dose will be 54CGE administered at 1.8CGE per fraction. The time course of administration will be one fraction per day, 5 days per week, for a period of 6 weeks. Radiation will be prescribed to the planning target volume which will include the tumor bed encompassed by an anatomically defined margin meant to include subclinical microscopic disease, and an additional geometric margin that is meant to account for the technical limitations associated with planning and administering daily fractionated treatment. Making radiation therapy safer through the use of proton therapy.

DRUG

^1^8F-fluorodeoxyglucose

This is a contrast media that will be given intravenously to aid in tumor visualization.

DRUG

^1^1C-methionine

This is a contrast media that will be given intravenously to aid in tumor visualization.

Sponsors & Collaborators

Principal Investigators

  • Thomas E Merchant, DO, PhD · St. Jude Children's Research Hospital

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Max Age
21 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-08-22
Primary Completion
2026-07-31
Completion
2026-07-31
FDA Drug
Yes
FDA Device
Yes

Countries

  • United States

Study Locations

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Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01419067 on ClinicalTrials.gov