This study will evaluate the safety of BXQ-350 and determine the maximum tolerated dose (MTD) in children with newly diagnosed DIPG or DMG. All patients will receive BXQ-350 by intravenous (IV) infusion and radiation therapy. The study is divided into two parts: Part 1 will enroll patients at increasing dose levels of BXQ-350 in order to determine the MTD. Part 2 will enroll patients requiring a biopsy in order to assess BXQ-350 concentrations in the biopsied tumor.
BXQ-350AD: A Phase 1 Open Label, Multi-Center Study to Evaluate the Safety and Tolerability of BXQ-350 in Children With Newly Diagnosed Diffuse Intrinsic Pontine Glioma (DIPG) and Diffuse Midline Glioma (DMG)