PCAT7 and posterior cortical atrophy: In order to determine the molecular mechanism that underlies the PCAT7/miR‐324‐5p axis in PCa bone metastasis, luciferase reporter assays were performed to assess the function of PCAT7 and miR‐324‐5p in multiple well‐known pathways that contribute to bone metastasis of PCa, including the Notch (Zayzafoon et al., 2004), TGF‐β (Dai et al., 2017), Wnt (Ren et al., 2019), and NF‐κB (Ren et al., 2017) pathways.