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About
Preoperative therapy has not been well studied in resectable glioblastoma. This study attempts to prospectively assess the feasibility and efficacy of preoperative chemo radiation in improving local control, as this is the predominant mode of failure in these patients leading to poor outcomes.
This Phase II study design would be used to proceed with the study treatment after meeting pre-specified events in the initial phase, with goal being to determine whether the new treatment paradigm is sufficiently promising to warrant a major controlled clinical evaluation against the standard therapy.
Full description
Neo adjuvant, preoperative chemo radiation has consistently shown improvements in local disease control or organ preservation in many cancers including head and neck, esophageal, rectal, bladder cancers and sarcomas, leading to improvements in overall survival and limb or organ preservation.
This interventional study will be done in two phases using the Simon two-stage Phase II study design. The median progression-free survival of these patients with current standard of care therapy is in the range of 6-8 months (6.9 months in the standard of care). With the proposed trial of surgical resection of the tumor after chemotherapy and radiation the median progression free survival is anticipated to be approximately 11-12 months from subset analysis of available literature and based on prior data on other disease sites. In other words, the 7-month local progression rates is anticipated to decrease from 50% to 25%, or progression free survival improve from 50-75%
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Inclusion criteria
Newly diagnosed GBM with histopathological confirmation.
Surgically suitable for subtotal or gross total resection as determined by central review.
Karnofsky Performance Status (KPS)>70
No contraindication for chemoradiation.
Complete blood count (CBC)/differential obtained within 28 days prior to registration, with adequate bone marrow function defined as follows:
Adequate hepatic function within 28 days prior to registration, as defined below:
Negative serum pregnancy test obtained for females of child-bearing potential within 28 days prior to step 2 registration.
Ability to get multiplanar contrast enhanced Magnetic Resonance Imaging (MRI)
Exclusion criteria
Recurrent, unresectable or multifocal malignant gliomas.
Any site of distant disease (for example, drop metastases from the GBM tumor site)
Prior radiation or chemotherapy or radiosensitizers for cancers of the brain and head and neck region; note that prior chemotherapy for a different cancer is allowable (except temozolomide).
Pregnancy or women of childbearing potential and men who are sexually active and not willing/able to use medically acceptable forms of contraception; this exclusion is necessary because the treatment involved in this study may be significantly teratogenic.
Patents treated on any other therapeutic clinical protocols within 30 days prior to registration.
Inability to undergo MRI (e.g., due to safety reasons, such as presence of a pacemaker, or severe claustrophobia).
Severe, active co-morbidity, defined as follows:
Primary purpose
Allocation
Interventional model
Masking
2 participants in 1 patient group
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Central trial contact
Karen Hassanzadeh; Heather Albertson, RN, BSN
Data sourced from clinicaltrials.gov
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