As shown in Figure 10B, a total of 15 potential small molecule compounds (such as depactin, physostigmine, and phenacetin) and 15 drug action mechanisms (such as HDAC inhibitor, acetylcholinesterase inhibitor, cyclooxygenase inhibitor) were identified, which provide a reference to search for potential drugs for the treatment of glioma. This evidence concerns the gene HDAC9 and central nervous system cancer.