MDK and glioblastoma: The cumulative survival fraction of MDK-high GBM patients was significantly decreased compared to that of MDK-low patients (cutoff: RNAseq V2 RSEM z-score = 0.913; 128 samples from the cBioPortal TCGA Dataset, p = 0.00261 by the log-rank test; Fig. 1d, Supplementary Table 3).