Patsy Cullen received her BSN in nursing from the University of California, her MS from the University of Kansas, and her pediatric nurse practitioner training from the University of Colorado. She has worked as a pediatric nurse practitioner in Pediatric Oncology for more than 20 years and is currently a member of the staff of Childhood Hematology-Oncology Associates and the Rocky Mountain Children's Cancer Center in Denver, Colorado. She has published extensively in the areas of general pediatric oncology, radiation oncology and neuro-oncology. She has been a member of the Children's Cancer Group for twenty years, has served on the Nursing Discipline committee as Vice-Chair and now chairs the clinical trials subcommittee. Additionally, Patsy is now a Principal Investigator in the Children's Oncology Group, administratively heading the program at Presbyterian-St. Luke's Medical Center and was recently elected to serve on the group's Nominating Committee. She has held nursing appointments on many national pediatric CNS tumor trials and is currently on the CNS Tumor Steering Committee for the Children's Oncology Group.