STC2 and astrocytoma (excluding glioblastoma): In the second panel, i.e., GL2082, the expression of STC2 was found to be elevated in astrocytoma tissues (grade 2-3) compared to normal tissues, and majority of GBM tissues (grade 4) were found to show a stronger STC2 signal, suggesting a positive association between STC2 expression and cancer grades (Fig. 1b).