Proton Beam or Intensity-Modulated Radiation Therapy in Preserving Brain Function in Patients With IDH Mutant Grade II or III Glioma

This randomized phase II clinical trial studies the side effects and how well proton beam or intensity-modulated radiation therapy works in preserving brain function in patients with IDH mutant grade II or III glioma. Proton beam radiation therapy uses tiny charged particles to deliver radiation directly to the tumor and may cause less damage to normal tissue. Intensity-modulated or photon beam radiation therapy uses high-energy x-ray beams shaped to treat the tumor and may also cause less damage to normal tissue. It is not yet known if proton beam radiation therapy is more effective than photon-based beam intensity-modulated radiation therapy in treating patients with glioma.

NCT Number	NCT03180502
Lead Sponsor	NRG Oncology Collaborators: National Cancer Institute (NCI)
Conditions	Anaplastic Astrocytoma, Anaplastic Oligoastrocytoma, Anaplastic Oligodendroglioma, Diffuse Astrocytoma, Glioma, Oligoastrocytoma, Oligodendroglioma, WHO Grade 3 Glioma
Enrollment	120 participants
Start Date	2018-01-23
Primary Completion	2026-07-13 (estimated)
Study Completion	2031-07-13 (estimated)
Updated on ClinicalTrials.gov	2026-07-28