Volumetric Modulated Arc Therapy (VMAT) for Brain Metastases
Radiotherapy to the whole brain is standard treatment for cancer that has spread to the brain (brain metastases) as it treats both the metastases that can be seen on scans and the brain metastases that are too small to be seen on scans.
This study will use a novel radiotherapy technique, called volumetric modulated arc therapy (VMAT), to treat patients with brain metastases. This technique allows delivery of both a standard radiation dose to the whole brain as well as a higher radiation dose to the brain metastases at the same time.
The study will assess the effectiveness of using VMAT in treating brain metastases, and examine its potential side-effects.
This is a Phase II prospective clinical trial. Following registration, patients will be required to undertake a baseline questionnaire assessment of daily living activities using the Modified Barthel's index, as well as cognitive assessment using MMSE.
Patients will undergo MRI scan of the brain for radiotherapy planning purposes. During radiotherapy planning and for each of the five radiotherapy fractions, patients will be immobilised in a custom fitted stereotactic mask system, to minimise head movement. During treatment, patients will have daily online setup corrections to ensure treatment accuracy.
Patients will be treated with WBRT/SIB using VMAT, delivering a total of 20 Gy in 5 fractions to the whole brain and 50Gy in 5 fractions to the brain metastases, delivered once daily on working days. Anti-nausea and anti-inflammatory medication will be prescribed to minimise acute toxicity.
Following therapy completion, patients will be seen every 3 months for the 1st year, then every 6 months thereafter. At each clinic visit, clinicians or study investigators will monitor for toxicity from therapy, document neurologic symptoms and signs and performance status as well as Modified Barthel's index and cognitive assessment.
Patients will have contrast-enhanced MRI brain at 3 months and 1 year, and contrast-enhanced CT brain at 6 months and 9 months in the first year and every 6 months after the first year. Serum creatinine levels will be done prior to each scan to ensure safety of intravenous contrast administration.
Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
whole brain radiotherapy (WBRT) and a simultaneous integrated boost (SIB) using volumetric modulated arc therapy
BC Cancer Agency - Vancouver Centre
Not yet recruiting
British Columbia Cancer Agency
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT01046123
- Information obtained from ClinicalTrials.gov on July 15, 2010
Medical and Biotech [MESH] Definitions
Antineoplastic agent especially effective against malignant brain tumors. The resistance which brain tumor cells acquire to the initial effectiveness of this drug can be partially overcome by the simultaneous use of membrane-modifying agents such as reserpine, calcium antagonists such as nicardipine or verapamil, or the calmodulin inhibitor, trifluoperazine. The drug has also been used in combination with other antineoplastic agents or with radiotherapy for the treatment of various neoplasms.
Radiotherapy given to augment some other form of treatment such as surgery or chemotherapy. Adjuvant radiotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.
The total amount of radiation absorbed by tissues as a result of radiotherapy.
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