In order to verify the effect of Csnk1a1 on GBM cell proliferation, U87 and LN229 cells were treated with shRNA. Cell proliferation was then measured by CCK‐8 and EdU assays. As shown in Figure 2B‐E, down‐regulation of Csnk1a1 significantly inhibited GBM cell survival and proliferation, with less EdU‐positive cells compared with the control group. Here, CSNK1A1 is linked to glioblastoma.