Considering a cohort of 428 tumors (WHO Grade I-IV) compiled from Sun et al. [24] and Gravendeel et al. [20], we find that tumor expression of IL13Rα2 is most closely associated with expression of the mesenchymal signature gene sets as defined by both Verhaak and Phillips [5,6] (Figure 2A, 2B and Table S2 in File S1). Here, IL13RA2 is linked to neoplasm.