Billy Grey <2011<2010 <2009 <2008 < 2007 < 2005-2006 < 2003-2004 < 2002 Chair of Research: 2009 (retrieved from http://www.braintumor.org/upload/images/research/ResearchProgramsBook.pdf ) Eric C. Holland, MD, PhD Memorial Sloan-Kettering Cancer Center, New York, New York Investigating the role of DNA damage response in gliomagenesis and “cancerstem cell” resistance to irradiation This is a gene study of chk2’s role as a tumor suppressor. Chk2 is a protein that inhibits cell division and growth. The study plans to identify novel characteristics of a protein involved in the repair of DNA damage, the control of tumor growth, and response of tumors to radiation therapy. Tumor: High grade gliomas, Medulloblastoma