MUC16, also called cancer antigen 125 (CA125) [31], is expressed in various types of brain cancer, such as glioblastoma [32] and medulloblastoma [33], and nonbrain cancer, such as ovarian cancer, breast cancer, pancreatic cancer, gastric cancer, and lung cancer [34,35,36,37,38]. This evidence concerns the gene MUC16 and glioblastoma.