To assess if TMPO-AS1L mediates BM in PCa, we constructed a mouse model of BM, in which luciferase-labeled control PC‐3 cells, PC-3 cells with stable overexpression of TMPO-AS1L, and those with stably downregulated TMPO-AS1L were inoculated into the nude mice’s left cardiac ventricle (Fig. S3). Here, TMPO is linked to posterior cortical atrophy.