We identified by R2-Genomics analysis that PCa tumors also exhibit elevated expression of various glutamine transporters required for glutamine uptake, inclusive of SLC1A5, SLC38A1, SLC38A2, and SLC38A7, identified in the German Cancer Research Center and National Center of Tumor Diseases Affymetrix GeneChip exon array dataset with benign (n = 48) and prostate cancer tissues (n = 48; Figure 1A) [28,29]. This evidence concerns the gene SLC38A1 and prostate cancer.