Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Anaplastic astrocytoma ?
    ### Response:
    Is genetic testing available for anaplastic astrocytomas? When anaplastic astrocytomas are not associated with an inherited condition, the cause typically remains unknown. In these cases, genetic testing is not available. However, genetic testing is available for the few genetic disorders that are associated with an increased risk for developing an astrocytoma.
    