Phase I Pilot Study to Evaluate the Anti-glioblastoma Effect of S-Gboxin in Standard Treatment of Glioblastoma/Diffuse Midline Glioma and Response to Treatment (Regardless of Mutation Status)

This is a pilot study to evaluate the efficacy of adding the mitochondrial oxidative phosphorylation inhibitor S-Gboxin (OXPHOS) to standard treatment for glioblastoma multiforme or glioma. Subjects will start oral S-gboxin orally twice daily and will evaluate the patients and vital status if they tolerate this dose at 3, 7and 15 days after initiation. Patients will undergo MRI scans before treatment and then at multiple time points during their participation in this Clinical Trial to monitor early tumor response to treatment ( MRI dates will be scheduled by the clinical trial coordinator) Peripheral blood samples will be collected at baseline, days 1-7-15-28-36-72 to compare biological indicators of treatment response. In some cases, circulating tumor cells (CTCs) will be monitored by real-time qRT-PCR to correlate with clinical data. Patients will also be assessed for the side effects they experience. Disease-free and overall survival outcomes will be recorded. Patients will also have their depressive symptoms, quality of life, and neurocognitive function assessed at multiple time points during and after treatment. After completion of the study, patients will be followed up at 3 months.