The prognosis i.e the outcome of treatment and impact on the longevity of the person depends largely on the grade and type of tumor cell origin. It is generally seen that individuals with oligodendrogliomas and ependymomas do better than those with astrocytomas or mixed tumors after appropriate treatment. Similarly, gliomas of grade 1 and 2 have very better chances of survival followed by grade 3 gliomas. Generally, the worst outcome is expected for Glioblastoma multiforme or a grade 4 glioma.