A Pilot Trial of Adjuvant Hypofractionated Stereotactic Radiosurgery for Intermediate-risk Meningioma (SRS-AIM)
This clinical trial tests the safety and effectiveness of hypofractionated stereotactic radiosurgery for treating patients who have undergone surgical resection for grade II meningiomas or grade I meningiomas that have come back after a period of improvement (recurrent). Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill tumor cells and shrink tumors. Stereotactic radiosurgery is a type of external radiation therapy that uses special equipment to position a patient and precisely deliver radiation to tumors in the body. Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells and have fewer side effects. Hypofractionated stereotactic radiosurgery may be safe, tolerable, and effective in treating patients with grade II or recurrent grade I meningiomas after surgical resection.
• Age \>+ 18 years at time of study entry
• Ability to understand and the willingness to sign a written informed consent document.
• Histologic diagnosis of newly diagnosed World Health Organization (WHO) grade 2 or recurrent WHO grade 1 meningioma. With regard to recurrent WHO grade 1 meningioma, participants must present with radiographic evidence of recurrence, and have a histologic diagnosis of WHO grade 1 meningioma at the most recent resection.
• \* Note: For participants diagnosed outside of University of California San Francisco (UCSF), re-review of pathology at UCSF is strongly encouraged. Hematoxylin and eosin (H\&E) slides will be reviewed by UCSF pathologists.
• Participants must have undergone a gross-total surgical resection as deemed by their neurosurgeon (Simpson grade I-III resection), using all available information which can include post-operative MRI, of a meningioma within 180 days of enrollment.
• Participants must have a pre-operative MRI.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 (Karnofsky score of 70 or higher)
• Participants must have post-operative MRI indicating anatomy suitable for hypofractionated radiosurgery, as reviewed by the Radiation Oncology co-principal investigators (PIs).