CHI3L1 and glioblastoma: In GBM, SHN3 expression significantly correlated with the expression of biomarkers corresponding to the mesenchymal subtype [39], including CHI3L1 (aka YKL40) and CD44 (Supplementary Fig. S6A), and with other markers of the classical subpopulation of GBM cells (Supplementary Fig. S6B).