Abstract
This phase I trial studies the side effects and the best dose of adavosertib when given together with local radiation therapy in treating children with newly diagnosed diffuse intrinsic pontine gliomas. Adavosertib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Radiation therapy uses high energy x-rays, gamma rays, neutrons, protons, or other sources to kill tumor cells and shrink tumors. Giving adavosertib with local radiation therapy may work better than local radiation therapy alone in treating diffuse intrinsic pontine gliomas.