Thus, about half of all PCa cases have a TMPRSS2–ERG fusion transcript, which is formed due to an intrachromosomal rearrangement leading to the fusion of two genes: TMPRSS2 and ERG. The TMPRSS2 gene is characterized by a higher expression level compared with that of ERG gene expression in the prostate tissue [3]; however, their fusion leads to a manifold increase in ERG expression [4,5,6]. This evidence concerns the gene TMPRSS2 and posterior cortical atrophy.