TACSTD2 and posterior cortical atrophy: Similarly, our three-dimensional visualization of the gene expression data points (individual samples) in the same GSE16560/GPL5474 PCa cohort (n = 281) showed that the TACSTD2 ‘knuckle/bulge’ finely fits into the GSE1 ‘hollow/gorge’, further corroborating an inverse GSE1/TACSTD2 correlation (Figure 3B).