NFAT5 and glioblastoma: Functional experiments have found that circFOXO3 significantly enhances the invasion and migration of GBM cells, and biochemical analysis has shown that circFOXO3, as a ceRNA, can upregulate the expression of the nuclear factor of NFAT5 by sponging miR‐138‐59 and miR‐432‐5p, thus promoting the progression of GBM in vitro and in vivo.128