EZH2 and posterior cortical atrophy: The role of the enhancer of zeste 2 (EZH2)/miR‐155‐5p axis in PCa was determined by using bioinformatics tools and performing luciferase reporter assay, chromatin immunoprecipitation PCR, CCK‐8 assays, cell migration and invasion assays, RNA isolation, reverse transcription quantity (RT‐qPCR) and Western blot.