Based on the existing literature, differentially expressed miRNAs in GBM [117,118,119,120,121,122,123,124,125,126,127,128,129] and BrM [130,131,132,133,134,135,136,137] were grouped, which resulted in four different groups, including GBM upregulated, GBM downregulated, BrM upregulated, and BrM downregulated. Here, SMARCA2 is linked to glioblastoma.