MYC and neoplasm: For the MYC amplifications of Group 3 MB patients (Figure 5G), the tumor purity of Group 3 MB with MYC amplifications was significantly different from that of Group 3 MB without MYC amplifications (MYC amplifications vs. MYC balance, p = 0.0086; MYC amplifications vs. MYC deletion, p = 9.8e-05).