Dasatinib or Placebo, Radiation Therapy, and Temozolomide in Treating Patients With Newly Diagnosed Glioblastoma Multiforme

Dasatinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. It may also make tumor cells more sensitive to radiation therapy. Radiation therapy uses high-energy x-rays to kill tumor cells. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. This randomized phase I/II trial is studying the best dose of dasatinib and to see how well it works compared with a placebo when given together with radiation therapy and temozolomide in treating patients with newly diagnosed glioblastoma multiforme.