We revealed that CD8A and CD8B of CD8+ T cells were remarkably associated with SPARCL1 expression in BLCA, BRCA, CESC, COAD, ESCA, HNSC, LUAD, LUSC, OV, MESO, PAAD, PRAD, STAD, SKCM, KIRC, KIRP, THYM, UCEC, and UVM. The gene discussed is SPARCL1; the disease is bladder transitional cell carcinoma.