Biomarker-Driven Therapy Using Immune Activators With Nivolumab in Patients With First Recurrence of Glioblastoma

This research is being done to test if it is safe to give nivolumab with targeted immunotherapy drugs for recurrent glioblastoma (GBM), a type of brain tumor. The study doctors believe that giving immunotherapy drugs that match the biomarkers in a tumor will help the immune system fight the tumor. Tumor tissue collected during surgery will be tested for certain biomarkers to determine which immunotherapy might best target the tumor. The combination immunotherapy arms include: Arm A: Nivolumab + anti-GITR Arm B: Nivolumab + IDO1 inhibitor Arm C: Nivolumab + Ipilimumab