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

  • End date
    Jan 25, 2030
  • participants needed
  • sponsor
    NRG Oncology
Updated on 4 October 2022
karnofsky performance status
neutrophil count
blood transfusion
beam radiation
step 2


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. Patients will be more likely to be randomized to proton beam radiation therapy. 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.



I. To determine whether proton therapy, compared to intensity-modulated radiation therapy (IMRT), preserves cognitive outcomes over time as measured by the Clinical Trial Battery Composite (CTB COMP) score (calculated from the Hopkins Verbal Learning Test Revised [HVLT-R]) Total Recall, HVLT-R Delayed Recall, HVLT-R Delayed Recognition, Controlled Oral Word Association (COWA) test, Trail Making Test (TMT) part A and part B.


I. To assess whether treatment with proton therapy preserves neurocognitive function as measured separately by each test, HVLT-R, TMT parts A & B, and COWA.

II. To document and compare treatment related symptoms, overall symptom impact, and disease related factor groupings, utilizing the M.D. Anderson Symptom Inventory Brain Tumor (MDASI-BT), for both treatment arms.

III. To assess whether treatment with proton therapy, compared to IMRT, results in superior quality of life as measured by the Linear Analog Scale Assessment (LASA) scale.

IV. To compare local control patterns of failure and overall and progression-free survival between the two treatment arms.

V. To assess adverse events.


I. To assess the impact of chemotherapy use on cognitive outcomes, symptom outcomes and quality of life.

II. To assess dose-response relationships between neuro-anatomic dosimetry and cognitive outcomes within and between treatment arms.

III. To evaluate the association between tumor molecular status and cognition at baseline and within and between treatment arms over time.

IV. To assess patterns of failure and pseudo progression as a function of radiation delivery type and dose received.

V. To assess local control, overall survival and, progression free survival in IDH mutant grade II and III tumors.

VI. To collect blood samples for future studies seeking to correlate changes in peripheral blood biomarkers (genes, micro ribonucleic acid [RNA], proteins, lymphocyte count, melatonin, etc) and the study endpoints.

VII. To document and compare the impact of low to intermediate gliomas and therapy on patients' work and activity participation (The Work Productivity and Activity Impairment [WPAI:GH] Questionnaire: General Health version 2.0) as well as the relationship between changes in patients' work and activity participation and neurocognitive function and patient reported symptoms and interference.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients undergo photon-based IMRT once daily (QD), 5 days a week for 6 weeks for a total of 30 fractions. Beginning 4 weeks after completion of radiation therapy, patients receive standard of care temozolomide for 5 days. Treatment repeats every 28 days for up to 12 courses in the absence of disease progression of unacceptable toxicity.

ARM II: Patients undergo proton beam radiation therapy QD, 5 days a week for 6 weeks for a total of 30 fractions. Beginning 4 weeks after completion of radiation therapy, patients receive standard of care temozolomide for 5 days. Treatment repeats every 28 days for up to 12 courses in the absence of disease progression of unacceptable toxicity.

After completion of study treatment, patients are followed up at 6 and 12 months and then yearly for 10 years.

Condition 1p/19q Co-deletion, Anaplastic Astrocytoma, Diffuse Astrocytoma, Glioma, IDH1 Gene Mutation, IDH2 Gene Mutation, Oligoastrocytoma, Oligodendroglioma, WHO Grade III Glioma
Treatment Temozolomide, IMRT (Intensity-Modulated Radiation Therapy), Proton Beam Radiation Therapy
Clinical Study IdentifierNCT03180502
SponsorNRG Oncology
Last Modified on4 October 2022


Yes No Not Sure

Inclusion Criteria

Tumor tissue must be available for submission for central pathology review
Documentation from the enrolling site confirming the presence of IDH mutation and 1p/19q status; the provided information must document assays performed in clinical laboratory improvement amendments (CLIA)-approved laboratories
Only English speaking patients are eligible to participate as the cognitive and quality of life assessments are available only in English
The patient or a legally authorized representative must provide study-specific informed consent prior to study entry
Karnofsky performance status of >= 70 within 30 days prior to registration
Absolute neutrophil count (ANC) >= 1,500 cells/mm^3
Platelets >= 100,000 cells/mm^3
Hemoglobin >= 10.0 g/dl (Note: The use of transfusion or other intervention to achieve hemoglobin [Hgb] >= 10.0 g/dl is acceptable)
Bilirubin =< 1.5 upper limit of normal (ULN)
Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) =< 3 x ULN
BUN < 30 mg/dl
Serum creatinine < 1.5 mg/dl
Post-operative magnetic resonance (MR) imaging with contrast is mandatory obtained for radiation therapy planning; enrolling sites are highly encouraged to obtain thin-slice (<1.5 mm) 3D T1 pre and post contrast and Axial T2/FLAIR sequences for planning purposes
The following baseline neurocognitive assessments must be completed and uploaded prior to step 2 registration: HVLT-R, TMT Parts A and B, and COWA
Completion of all items on the following baseline quality of life forms: MDASI-BT, LASA QOL, WPAI-GH and Employment Questionnaire. These quality of life forms will be required and data entered at step 2 registration
Financial clearance for proton therapy treatment prior to step 2 registration
Centrally reviewed histologically proven diagnosis of supratentorial, Word Health Organization (WHO) grade II or III astrocytoma, oligodendroglioma or oligoastrocytoma, with IDH mutation

Exclusion Criteria

Definitive clinical or radiologic evidence of metastatic disease; if applicable
Prior invasive malignancy (except non-melanomatous skin cancer) unless disease free for a minimum of 3 years; (for example, carcinoma in situ of the breast, oral cavity or cervix are permissible)
Prior cranial radiotherapy or radiotherapy to the head and neck where potential field overlaps would exist
Prior chemotherapy or radiotherapy for any brain tumor
Histologic diagnosis of glioblastoma (WHO grade IV) or pilocytic astrocytoma (WHO grade I)
Definitive evidence of multifocal disease
Planned use of cytotoxic chemotherapy during radiation (only adjuvant temozolomide therapy will be used on this protocol)
Patients with infra-tentorial tumors are not eligible
Prior history of neurologic or psychiatric disease believed to impact cognitive function
The use of memantine during or following radiation is NOT allowed
Severe, active co-morbidity defined as follows
Unstable angina or congestive heart failure requiring hospitalization within 6 months prior to enrollment
Transmural myocardial infarction within the last 6 months prior to step 2 registration; evidence of recent myocardial infarction or ischemia by the findings of S-T elevations of >= 2 mm using the analysis of an electrocardiogram (EKG) performed within 28 days prior to step 2 registration (Note: EKG to be performed only if clinical suspicion of cardiac issue)
New York Heart Association grade II or greater congestive heart failure requiring hospitalization within 12 months prior to step 2 registration
Serious and inadequately controlled arrhythmia at step 2 registration
Serious or non-healing wound, ulcer or bone fracture or history of abdominal fistula, intra-abdominal abscess requiring major surgical procedure, open biopsy or significant traumatic injury within 28 days prior to step 2 registration, with the exception of the craniotomy for surgical resection
Acute bacterial or fungal infection requiring intravenous antibiotics at the time of step 2 registration
Hepatic insufficiency resulting in clinical jaundice and/or coagulation defects; note, however, that laboratory tests for coagulation parameters are not required for entry into this protocol
Chronic obstructive pulmonary disease exacerbation or other respiratory illness requiring hospitalization or precluding study therapy at the time of step 2 registration
Human immunodeficiency virus (HIV) positive with CD4 count < 200 cells/microliter; acquired immune deficiency syndrome (AIDS) based upon current Centers for Disease Control and Prevention (CDC) definition; note, however, that HIV testing is not required for entry into this protocol
Any other severe immunocompromised condition
Active connective tissue disorders, such as lupus or scleroderma, that in the opinion of the treating physician may put the patient at high risk for radiation toxicity
End-stage renal disease (i.e., on dialysis or dialysis has been recommended)
Any other major medical illnesses or psychiatric treatments that in the investigator's opinion will prevent administration or completion of protocol therapy
Inability to undergo MRI with and without contrast (e.g. claustrophobia, non-MRI
compatible implant or foreign body, gadolinium allergy or renal dysfunction
preventing the patient from receiving gadolinium- institutional guidelines
should be used to determine if patients are at risk for renal dysfunction)
note that patients with severe claustrophobia are permitted on this study if
they are willing and able to undergo MRI with adequate sedation or anesthesia
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