KIF7 and posterior cortical atrophy: To investigate the expression of KIF7 and KIF27 in PCa, mRNA expression of these two genes was detected by multiplex reverse transcription PCR (RT-PCR) in two immortalized normal prostate epithelial cell lines HPr-1 and NPTX and five PCa cell lines including LNCaP, C4-2B, DU145, PC3 and 22Rv1.