YTHDF1 and glioblastoma: The survival of two groups of patients with GBM and LGGs was estimated: a group of 62 patients with high expression of both MSI1 and YTHDF1 (expression levels above the upper quartile), and a group of 81 patients with low expression of both MSI1 and YTHDF1 (expression levels below the lower quartile) (Fig. 7c).