Study of Gamma-Knife Radiosurgery Using Magnetic Resonance Imaging (MRI) Spectroscopy for Recurrent Glioma (GKS)
The purpose of this study is to assess the efficacy, of treating patients with recurrent glioblastoma using Gamma-Knife Radiosurgery (GKS) to target a tumor volume defined by a combination of gadolinium enhancement and magnetic resonance spectroscopy (MRS). This is a single center, Phase II trial. A total of 40 glioblastoma patients will be enrolled into the primary arm of the trial. In addition, a minimum of 10 patients with recurrent anaplastic (grade III) gliomas and a minimum of 10 patients with recurrent low-grade (grade II) gliomas will be enrolled into exploratory arms.
The investigators hypothesize that the use of a combination of gadolinium enhancement and elevated Cho:NAA ratio via MRS to determine the treatment target volume for Gamma Knife may be an effective way to treat focally-recurrent glioblastoma.
|Study Design:||Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Phase II Study of Gamma-Knife Radiosurgery Using Magnetic Resonance Spectroscopy for Target Definition in Patients With Recurrent Glioma|
- To assess the efficacy, as measured by progression-free survival at six months (PFS-6), of treating patients with recurrent glioblastoma using GKS to target a tumor volume defined by a combination of gadolinium enhancement and MRS. [ Time Frame: 6 months ]
- To describe PFS and OS in pts with recurrent GBM following GKS targeting a tumor volume defined by a combination of gad enhancement and MRS [ Time Frame: 1 year ]
- To further assess the safety of GKS in patients with recurrent glioblastoma [ Time Frame: 1 year ]
- To gather initial data regarding the safety and efficacy of treatment of patients with recurrent low-grade or anaplastic glioma with GKS targeting a tumor volume as defined by a combination of gadolinium enhancement and MRS. [ Time Frame: 1 year ]
|Study Start Date:||December 2009|
|Study Completion Date:||April 2011|
|Primary Completion Date:||April 2011 (Final data collection date for primary outcome measure)|
Procedure: Gamma Knife Radiosurgery
Study Design: A single-center, single-arm, one-stage phase II clinical trial for patients with recurrent grade IV glioma (glioblastoma), with two additional exploratory arms for patients with recurrent grade II and grade III gliomas.
Patient Numbers: A total of 40 patients with recurrent glioblastoma will be enrolled. In addition, a minimum of 10 patients with recurrent grade III (anaplastic) glioma and a minimum of 10 patients with recurrent grade II (low-grade) glioma will be enrolled independently into separate exploratory arms.
Summary of Patient Eligibility Criteria Histological confirmation of glioma, grades II - IV; prior first-line treatment with surgery, radiotherapy and chemotherapy for malignant (grades III and IV) gliomas; age > 18 years; life expectancy >8 weeks; Karnofsky Performance Status ≥ 60; adequate organ function; signed patient informed consent; willingness to forego additional therapy until evidence of disease progression.
Primary: Six-month progression-free survival (PFS-6)
Secondary: Median overall survival (mOS), median progression-free survival (mPFS), location of recurrence, symptomatic necrosis rate, reoperation rate, reoperation findings (estimated percentage of viable tumor vs. radiation effect and necrosis), and safety
Please refer to this study by its ClinicalTrials.gov identifier: NCT01011231
|United States, California|
|UCSF Department of Neurosurgery|
|San Francisco, California, United States, 94143|
|Principal Investigator:||Jennifer Clarke, MD, MPH||UCSF Department of Neurosurgery|