RecruitingPhase 2Drug trialINdividualized Screening Trial of Innovative Glioblastoma Therapy (INSIGhT)This research study is studying several investigational drugs as a possible treatment for Glioblastoma (GBM). The drugs involved in this study are : * Abemaciclib (arm is currently closed to accrual) * Temozolomide (temodar) * Neratinib (arm is currently closed to accrual) * CC115 (arm is currently closed to accrual) * QBS10072S