We find that mutations are co-occurring in ATRX, TP53, and IDH1, and that these are mutually exlusive with mutations in PTEN and EGFR in glioblatoma multiform (GBM) and lower grade glioma (LGG) (Figure 3; Additional file 5: Table S2). The gene discussed is EGFR; the disease is glioblastoma.