CD8A and prostate carcinoma: Furthermore, it was clear that CD8 T cells were considerably enriched in tumor areas of evanescent carcinoma patients, relative to CD8 T cell numbers in PIN (19.18 ± 2.4, p < 0.0001), intermediate (18.07 ± 1.07, p < 0.0001), and advanced prostate carcinoma (12.35 ± 1.27, p < 0.0001) (Figure 4B).