GPNMB and glioblastoma: Median overall survival for GBM with low SPP1 or GPNMB expression was 14.16 months (low SPP1 expression including G-CIMP+ tumors) vs. 12.56 months (low SPP1 expression excluding G-CIMP+ tumors) and 17.7 months (low GPNMB expression including G-CIMP+ tumors) vs. 14.82 months (low GPNMB expression excluding G-CIMP+ tumors).