Neoplasms

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Glioblastoma

Glioma

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Neoplasms, Neuroepithelial

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Neuroectodermal Tumors, Primitive

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Neoplasms by Histologic Type

Neoplasms, Glandular and Epithelial

Neoplasms, Nerve Tissue

Neuroepithelioma

Receive additional dose of 18Gy to the subventricular zone

Receive additional dose of 20Gy to the subventricular zone

Receive additional dose of 22Gy to the subventricular zone

Stereotactic radiosurgery dose escalation by either 18, 20, or 22 Gy to the subventricular zone in addition to standard of care

Stereotactic Radiosurgery

Alexis M Demopoulos, MD

Several investigations suggest neural stem cells located in the subventricular region play an active role in promoting or even initiating cortical malignant glioma growth. Although normal appearing on neuroimaging, surgical specimens taken from this region show it contains malignant glioma stem-like cells. Some retrospective analyses found patients who received radiation therapy to this region during standard of care treatments lived longer than patients who did not.

The investigator's study hypothesizes (1) stereotactic radiosurgery of cancer stem-like cells in these regions will be well tolerated during standard of care therapy, (2) focused stereotactic radiosurgery will be more effective in destroying cancer stem cells than conventional radiation therapy, and (3) treatment will improve malignant glioma survival.

Since 2005, standard treatment for malignant gliomas includes surgery as extensive as possible to reduce tumor bulk without causing deficits, followed by temozolomide chemotherapy with radiation therapy to the surgical area plus an additional 1-2 cm margin around this cavity. Despite advances in surgical techniques and radiation delivery, 80% of tumors recur at the margins of the surgery, within the regions that were treated with radiation.

In 2014, different institutions found patients lived longer if part of the brain that looked normal received radiation therapy. This region was called the "subventricular zone" and was known to contain embryonic stem cells that formed the brain. Researchers believed this region contained cancer stem cells promoting tumor survival and growth. Some studies suggested this area might even represent another reservoir of malignant tumor cells.

During participation in this clinical trial, targeted radiation to the subventricular zone is given in addition to standard of care radiation and chemotherapy. The subventricular zone is divided into four regions and one of four regions on the same side as the tumor is treated, not the whole subventricular zone. Only patients scheduled to receive six weeks of standard therapy are eligible for participation. The additional radiation therapy is delivered over the course of one day. The study is not randomized and all patients will receive the experimental treatment. Patients complete regular evaluations over the next two years to monitor toxicity, which is the main concern of this Phase I study.

Study of Stereotactic Radiosurgery to the Subventricular Zone in Malignant Gliomas

Phase I Study of Subventricular Zone Tumor Stem Cell Stereotactic Radiosurgery With Standard of Care Chemoradiation Therapy in Newly Diagnosed Malignant Gliomas (WHO III and WHO IV Astrocytomas)

INCIDENCE OF TREATMENT-EMERGENT ADVERSE EVENTS AS DEFINED BY CTCAE criteria as well as BY steroid requirement

PFS measured by time to recurrence as well as pattern of recurrence

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Study of Stereotactic Radiosurgery to the Subventricular Zone in Malignant Gliomas	NCT03956706	Glioblastoma Astrocytoma, Gr... Astrocytoma, Gr... Malignant Gliom...	Stereotactic Ra...	18 Years -	Northwell Health
Study of Stereotactic Radiosurgery to the Subventricular Zone in Malignant Gliomas	NCT03956706	Glioblastoma Astrocytoma, Gr... Astrocytoma, Gr... Malignant Gliom...	Stereotactic Ra...	18 Years -	Northwell Health

Spots Global Cancer Trial Database for grade iii

Every month we try and update this database with for grade iii cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Spots Global Cancer Trial Database for grade iii

Every month we try and update this database with for grade iii cancer trials from around the world to help patients and their families find trials that might be right for them. We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Every month we try and update this database with for grade iii cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.