To verify the role of MALAT1 in PCa, we first analyzed the MALAT1 expression profile in primary organ tissues and PCa using the Cancer Genome Atlas (TCGA) database and found that MALAT1 was highly expressed in the prostate than other tissues, and the expression was even higher in PCa (Figures 1(a) and 1(b)). This evidence concerns the gene MALAT1 and posterior cortical atrophy.