Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Glioblastoma ?
    ### Response:
    Is genetic testing available for glioblastoma? Genetic testing is not available for many people with glioblastoma since most of these tumors occur sporadically (by chance) and are not caused by a genetic mutation. However, genetic testing is an option for people with an inherited condition that predisposes to glioblastoma such as neurofibromatosis type 1, Turcot syndrome and Li Fraumeni syndrome.
    