RecruitingPhase 1Drug trialA Phase 1 Safety and Dose Finding Study of GLIX1 in Adults With Recurrent or Progressive High-grade GliomaThis is an open-label, multicenter dose-escalation study to be followed by a dose expansion to define the optimal dose of GLIX1 as monotherapy by reviewing safety and tolerability, disease characteristics and pharmacokinetic profiles and preliminary clinical activity in participants with a high grade diffuse glioma that progressed during or recurred after prior standard of care therapies or investigational therapies as clinically indicated. Patients will be treated daily with GLIX1 capsules until disease progression or unacceptable safety.