Prior radiation to the head. If you previously got radiation to treat brain tumors or cancers that may have spread to the area, it can increase your risk for glioblastoma.
Rare genetic conditions. If you have hereditary disorders linked to genetic mutations such as:
- Turcot syndrome
- Neurofibromatosis type 1
- Li-Fraumeni syndrome
Exposure to chemicals and other cancer-causing agents may also increase your risk for genetic mutations.
Age and gender. It’s more common among those who are 50 or above. The average age for diagnosis is 64. Men are more likely to have it.
Race. It’s more common among white people than among Black, Asian, and Indigenous groups.