1. Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
2. Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.
3. Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.
4. Ken and Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
5. Lou and Jean Malnati Brain Tumor Institute of the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611, USA.
6. University of Chicago, Chicago, IL 60637, USA.
7. Division of Neuropathology, Department of Pathology, Brigham and Women’s Hospital, Boston, MA 02115, USA.
8. Ziopharm Oncology, Inc., One First Avenue, Parris Building 34, Navy Yard Plaza, Charlestown, Boston, MA 02129, USA.
9. MD Anderson Cancer Center, University of Texas, Houston, TX 77030, USA.