Glioma and Brain Tumor Facts

  • An estimated 23,720 Americans were diagnosed with malignant primary brain tumors in 2010.
  • Approximately 13,000 people die in the United States each year from glioma.
  • There are many types of gliomas. Glioblastoma multiforme (GBM), astrocytoma, oligodendroglioma, and ependymomas are all types of gliomas.
  • GBM is slightly more common in men than in women.
  • Gliomas occur more frequently in Caucasians than other races and ethnicities.
  • There are few known risk factors for brain tumors. People who have had ionizing radiation to the head are more likely to develop brain tumors.
  • Individuals with rare syndromes such as neurofibromatosis (type 1 and 2), Li-Fraumeni, and Turcot's syndrome have increased risk for glioma.
  • Gliomas seem to run in some families. Approximately 5-10 percent of gliomas may be related to inherited gene mutations.
  • First degree relatives (siblings, parents, children) of glioma patients have an increased risk of glioma. The risk is approximately two times that of someone without a family history.