Introduction Glioma is a general term describing a specific subgroup of brain cancers derived from glial cells [1]. Glial cells, which include oligodendrocytes [2], astrocytes [3], ependymal cells [4], and microglia [5], J. Clin. Med. 2018, 7, 350; doi:10.3390/jcm7100350 www.mdpi.com...