Adavosertib, Radiation Therapy, and Temozolomide in Treating Patients With Newly Diagnosed or Recurrent Glioblastoma

This phase I trial studies the side effects and best dose of adavosertib when given together with radiation therapy and temozolomide in treating patients with glioblastoma that is newly diagnosed or has come back. 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 to kill tumor cells and shrink tumors. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving adavosertib, radiation therapy, and temozolomide may work better in treating patients with newly diagnosed or recurrent glioblastoma compared to radiation therapy and temozolomide alone.