IF and flow cytometry assays showed that knockdown of SOX9 resulted in a significantly decreased EdU‐positive rate (Figure 5H; Figure S13C,D, Supporting Information) and increased apoptotic rate (Figure 5I; Figure S13E–G, Supporting Information) in Linc00942‐overexpressing GBM cells and TMZ‐resistant GBM cells. Here, SOX9 is linked to glioblastoma.