- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00643591
Positron Emission Tomography-Computed Tomography (PET-CT) High-grade Glioma
Pilot Study on the Determination of Therapy Resistant Areas Within the Tumor in Patients With High-grade Glioma by Repeated 18F-FDG-PET-CT Scans
The objectives of the trial are:
- To determine the localisation within the primary tumor of the therapy resistant cells, before and during radiotherapy to determine a possible accurate boost volume.
- To determine changes during treatment intra- and extratumoral within the irradiated area.(Intratumoral: change of up-take - decrease, increase, change of localization/ Extratumoral: effects of temporal changes in up-take - e.g. due to oedema).
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Patients harboring a primary intracerebral high grade tumor (WHO III- IV) have a median survival of six to 12 months. Combined chemoradiotherapy with temozolomide is now the standard of care since results of the joint EORTC-NCIC phase III study randomizing between radiotherapy alone and combined radiochemotherapy with temozolomide showed a significant improvement in 2-years survival from 8% to 24% for the combined treatment arm (Stupp 2005).
A differentiation between possible responders and non-responders before the start of irradiation may eventual be possible by the use of 18F-FDG PET-CT. Preliminary own results have shown that a higher metabolic activity in glioblastoma as measured on a simulation 18F-FDG PET-CT scan can be a prognosticator for shortened survival (Baumert, 2006).
Our preliminary data show that a high uptake of 18F-FDG on a PET-CT scan before radiotherapy in glioblastoma could be a marker for reduced survival.
Popperl et al showed that dual phase FDG PET imaging is superior in differentiating low-grade from high-grade recurrent astrocytomas (Popperl, 2006). Visual analysis of delineation of glioma showed that the delayed images (imaged first 0-90 min and once or twice later at 180-480 min after injection) better distinguished the high uptake in tumors relative to uptake in gray matter. SUV comparisons also showed greater uptake in the tumors than in gray matter, brain, or white matter at the delayed times (Spence et al).
These findings support the view that by using FDG-PET scans we could image active areas within the tumor. Indeed, in vivo, a cancer is made up by different types of cells, including hypoxic cells, cells that proliferate more fast, as well as by non-malignant tissues, including inflammatory cells and vasculature.
Intra-tumor heterogeneity in malignant glioma is often observed and can be visualised also by current PET-CT techniques.
The dynamics of the tracer uptake in the different tumor sub-volumes may give important information about the biological characteristics as well. Indeed, the dynamics of FDG uptake per cell are dependent on the blood flow, the uptake in the cell and the phosphorylation. All these of these steps give information on the biology of the cancer in that particular area of the tumor.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Maastricht, Netherlands, 6202 AZ
- Maastricht Radiation Oncology
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Histologically confirmed gliomas III - IV (glioblastoma, anaplastic astrocytoma, gliosarcoma) at primary diagnosis;
- WhO PFS <= 2
- Tumours which do enhance on pre-operative imaging.
- Post-operative enough visible residual tumour on PET or status after biopsy only
- Age >18 years
- Availability of deep fresh frozen tissue for molecular biologic evaluation - if possible
- Patient able to tolerate full course of conventional RT and follow serial scanning
- No previous radiotherapy to the head and neck and brain area.
- Prior neurosurgery within 6 weeks of treatment
- No previous chemotherapy before treatment of the glioma. Standard radiochemotherapy with temozolomide is not excluded
- No prior or concurrent medical condition which would make treatment difficult to complete. Medication with steroids is allowed.
- No incapacitated patients.
Exclusion Criteria:
- Not histologically confirmed gliomas III - IV (glioblastoma, anaplastic astrocytoma, gliosarcoma) at primary diagnosis;
- WhO PFS > 2
- No tumours which do enhance on pre-operative imaging.
- Post-operative not enough visible residual tumor on PET or status after biopsy only
- Age <18 years
- No availability of deep fresh frozen tissue for molecular biologic evaluation
- Patient not able to tolerate full course of conventional RT and follow serial scanning
- Previous radiotherapy to the head and neck and brain area.
- Prior neurosurgery not within 6 weeks of treatment
- Previous chemotherapy before treatment of the glioma.
- Prior or concurrent medical condition which would make treatment difficult to complete.
- Incapacitated patients.
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Only
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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Observational
Patients with a primary glioblastoma
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dynamic PET-CT scan
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
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To determine the localisation within the primary tumour of the therapy resistant cells, before and during radiotherapy to determine the accurate boost volume. To determine changes during treatment intra- and extratumoral within the irradiated area.
Time Frame: after acquisition of all planned PET CTs
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after acquisition of all planned PET CTs
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Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- MAASTRO 07-12-12/09
- EudraCT Number 2007-005530-36
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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