MKI67 and posterior cortical atrophy: Regarding the antitumour efficacy of TSA on resistant PCa, Figure 2E, F indicated that TSA noticeably inhibited cell proliferation, as indicated by positively stained Ki67 cells (10.79 ± 3.22% versus 35.43 ± 5.40% in control group), while the Ki67 positivity was 30.2 ± 5.39% in docetaxel‐treated group, supporting the observations that TSA potently inhibited cell proliferation (Fig. 1C).