We examined clinicopathological characteristics, namely age, tumor purity, histopathological subtype, T and N stages, and Gleason score, in relation to the level of CD8+ T cells in TCGA PRAD (Supplementary Figures S2A–F) and clinicopathological characteristics, namely age, prostate specific antigen (PSA) level, T and N stages, and Gleason score and ERG-fusion status, in relation to the level of CD8+ T cells in MSKCC (Supplementary Figures S2I–O). The gene discussed is KLK3; the disease is neoplasm.