RELA and ependymoma: In accordance with this knowledge, no drivers were found in the three ependymoma posterior fossa group A tumors studied here (F0025588-0809, P2233_113T, P7708_111T), and all four ependymomas in the RELA fusion class (P1148_114T, P7708_114T, P7708_115T, P7708_201T) displayed copy number alterations at 11q13.1 involving C11orf95 and RELA (Table 1, Additional file 2: Table S1, Additional file 5: Fig. S1, Additional file 6: Fig. S2G).