Testing the Use of the Immunotherapy Drugs Ipilimumab and Nivolumab Plus Radiation Therapy Compared to the Usual Treatment (Temozolomide and Radiation Therapy) for Newly Diagnosed MGMT Unmethylated Glioblastoma

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PRIMARY OBJECTIVES: I. To determine if adding ipilimumab and nivolumab to radiotherapy significantly prolongs progression-free survival (PFS) versus adding temozolomide to radiotherapy in patients with newly diagnosed glioblastoma (GBM) without MGMT promoter methylation. (Phase II) II. To determine ...

PRIMARY OBJECTIVES: I. To determine if adding ipilimumab and nivolumab to radiotherapy significantly prolongs progression-free survival (PFS) versus adding temozolomide to radiotherapy in patients with newly diagnosed glioblastoma (GBM) without MGMT promoter methylation. (Phase II) II. To determine if adding ipilimumab and nivolumab to radiotherapy significantly prolongs overall survival (OS) versus adding temozolomide to radiotherapy in patients with newly diagnosed GBM without MGMT promoter methylation. (Phase III) SECONDARY OBJECTIVES: I. To determine if adding ipilimumab and nivolumab to radiotherapy significantly prolongs PFS versus adding temozolomide to radiotherapy in patients with newly diagnosed GBM without MGMT promoter methylation for the phase III part of the study. II. To determine if adding ipilimumab and nivolumab to radiotherapy significantly increases the 2-year overall survival (OS) rate versus adding temozolomide to radiotherapy in patients with newly diagnosed GBM without MGMT promoter methylation. III. To evaluate the safety of adding ipilimumab and nivolumab to radiotherapy via comparative frequency between arms of specific adverse events of interest and frequency summaries for all adverse event types. IV. To evaluate the effect of adding ipilimumab and nivolumab to radiotherapy versus adding temozolomide to radiotherapy on patient reported outcomes (PROs), as measured by the MD Anderson Symptom Inventory - Brain Tumor (MDASI-BT) in patients with newly diagnosed GBM without MGMT promoter methylation. V. To evaluate the effect of adding ipilimumab and nivolumab to radiotherapy versus adding temozolomide to radiotherapy on selected Patient Reported Outcomes-Common Terminology Criteria for Adverse Events (PRO-CTCAE) items in patients with newly diagnosed GBM without MGMT promoter methylation. VI. To evaluate the impact of adding ipilimumab and nivolumab to radiotherapy versus adding temozolomide to radiotherapy on neurocognitive function (NCF) in patients with newly diagnosed GBM without MGMT promoter methylation. EXPLORATORY OBJECTIVES: I. To explore biomarkers in pre-treatment archival tumor tissue that may predict efficacy of ipilimumab and nivolumab as measured by OS, PFS, and 2-year OS rate, such as but not limited to: Ia. PDL1 expression Ib. Mutational burden II. To explore (in the two treatment separately) whether the MGMT protein expression correlates with clinical outcomes including OS, PFS, and 2-year OS rate. III. To evaluate if MGMT protein expression may be predictive of differential treatment effects between the two treatment arms. OUTLINE: Patients are randomized to 1 of 2 arms. ARM 1: Patients undergo radiation therapy for 5 days per week (Monday-Friday) for a total of 30 fractions over 6 weeks and simultaneously receive temozolomide orally (PO) daily for 6 weeks. After radiation, patients may wear the Optune device at the discretion of the patient and their treating physician. Beginning 1 month after radiation therapy, patients receive temozolomide on days 1-5. Treatment repeats every 28 days for up to 12 cycles at the discretion of the treating investigator in the absence of disease progression or unacceptable toxicity. ARM 2: Patients undergo radiation therapy for 5 days per week (Monday-Friday) for a total of 30 fractions over 6 weeks. Starting on the first day of radiation, patients also receive ipilimumab intravenously (IV) over 90 minutes once every 4 weeks (Q4W) for 4 doses and nivolumab IV over 30 minutes every 2 weeks until disease progression. After completion of study treatment, patients are followed up every 3 months for year 1, then every 4 months for year 2, and then every 6 months thereafter.

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