A glioma is a type of tumor that occurs in the brain or spine, which arises from glial cells. Based on the histological features, Gliomas are mainly classified into ependymomas (develop in ependymal cells), astrocytomas (develop in astrocytes), Oligodendrogliomas (develop in oligodendrocytes), brainstem glioma (develop in the brain stem), Optic nerve glioma (develop in or around the optic nerve) and mixed gliomas (develop in other different types of glia). Learn more: glioma CAR-T