IL20RB and glioblastoma: Microarray analysis revealed that Il-19 was expressed in both the intratumoral and peritumoral regions and that Il-20RB was more highly expressed in the intratumoral region than in the peritumoral region (Supplementary Fig. 2B, 2D), indicating that Il-19 was expressed in the tumor core and the adjacent peritumoral region of GBM.