Ki‐67 is a nuclear protein that is associated with cellular proliferation and is also an independent predictor of metastasis and a cause‐specific mortality of PCa.30, 31, 32 Our preliminary results demonstrated that ICT significantly inhibited the expression level of Ki‐67 in PCa tissue, suggesting the growth inhibitory function of ICT on PCa cells. This evidence concerns the gene MKI67 and posterior cortical atrophy.