Because the PTEN and ATAD1 genes are adjacent on human Chr10q23.31 (Figure 1A; Poluri and Audet-Walsh, 2018), we assessed whether ATAD1 is co-deleted with PTEN using immunohistochemistry on prostate adenocarcinoma tumors (Chung et al., 2019). This evidence concerns the gene PTEN and prostate adenocarcinoma.