To examine the in vitro function of FKBP9 in GBM, we stably introduced lentiviral vectors containing three distinct shRNAs specifically targeting FKBP9 or nontargeting control shRNAs into the LN-229, SF-539 and T98G GBM cell lines (designated LN-229-shFKBP9, SF-539-shFKBP9, T98G-shFKBP9, LN-229-shControl, SF-539-shControl and T98G-shControl, respectively), and the knockdown efficiency was confirmed by immunoblotting (IB) assay (Fig. 2a, left panel). Here, FKBP9 is linked to glioblastoma.