KLF5 and posterior cortical atrophy: Interestingly, this was indeed the case, as IHC staining of Ac-KLF5 demonstrated that tibial tumors from both DU 145 and PC-3 PCa cell lines indeed expressed significantly higher levels of Ac-KLF5 than their counterparts, while total KLF5 expression levels were lower in tibial tumors (Fig. 1a–f).