
A Explore Study of Bevacizumab Combined With Conventional Therapy in Glioblastoma
Study Purpose
This is a single-center, open-label, single arm study to explore whether potential image biomarkers correlate with efficacy of bevacizumab combined with conventional therapy in newly diagnosed glioblastoma. Despite the increase in therapies available, the median survival of patients with glioblastoma multiforme (GBM) remains less than 15 months. The phase III pivotal study in newly diagnosed GBM also met its co-primary endpoint of progression-free survival (PFS) which further confirm the efficacy of bevacizumab in GBM. Early predicting the efficacy of bevacizumab combined with conventional therapy in newly diagnosed glioblastoma could help us to identify the suitable patients to receive suitable treatment in GBM. Thus, characterizing the blood flow and blood volume in the tumor and their changes during therapy might provide information on vasculature growth or collapse,edema formation, tumor growth, and/or cell death(necrosis) .We decided to investigate whether the estimation of blood circulation in tumor, using MRI,PET could be used as a surrogate marker to predict the early response of GBM to bevacizumab. Several previous studies have demonstrated that the relative cerebral blood volume (rCBV) correlated with the histologic grade of gliomas and investigated the prognostic value of the tumor CBV for survival.In current study, We hypothesized that, the temporal changes during anti-angiogenesis therapy in specific regions of high and low perfusion in glioblastoma might predict the efficacy of bevacizumab.Since there is no mature PET tracer directly image Vascular Endothelial Growth Factor (VEGF) in China,we use 18F-Galacto-arginine-glycine-aspartic acid (RGD)-- a new tracer for PET imaging of αvβ3 by testing Standardized uptake value mean (SUVmean),Standardized uptake value max (SUVmax) and tumor to non-tumor tissue ratios (T/NT) to indirectly reflect the VEGF expression. The integrin αvβ3 is an important receptor affecting tumor growth, local invasiveness, and metastatic potential. Specifically, αvβ3 is highly expressed on activated endothelial cells during angiogenesis. Therefore, in the pilot study, we use dynamic contrast enhanced magnetic resonance imaging (DCE-MRI),dynamic susceptibility-contrast magnetic resonance imaging (DSC-MRI) and 18F-Galacto-RGD PET to explore the potential image biomarkers of bevacizumab used in newly diagnosed glioblastoma.
Recruitment Criteria
Accepts Healthy Volunteers
Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms |
No |
Study Type
An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes. An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes. Searching Both is inclusive of interventional and observational studies. |
Interventional |
Eligible Ages | 18 Years and Over |
Gender | All |
Trial Details
Trial ID:
This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries. |
NCT01939574 |
Phase
Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans. Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data. Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs. Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use. |
N/A |
Lead Sponsor
The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data. |
Shandong Cancer Hospital and Institute |
Principal Investigator
The person who is responsible for the scientific and technical direction of the entire clinical study. |
Jinming Yu, PhD |
Principal Investigator Affiliation | Shandong Cancer Hospital and Institute |
Agency Class
Category of organization(s) involved as sponsor (and collaborator) supporting the trial. |
Other |
Overall Status | Unknown status |
Countries | China |
Conditions
The disease, disorder, syndrome, illness, or injury that is being studied. |
Glioblastoma |
Contact a Trial Team
If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.