CD8+ T cells (MT‐ND4) were implicated in glomerular disease, tumor immunity, and tumor metastasis in ccRCC, including breast and bladder cancer, fibrosarcoma of the bladder, adenocarcinoma of the prostate, lymphoma, adult fibrosarcoma, and metastases from various other tumors (Fig. 4C, Table S2). Here, MT-ND4 is linked to urinary bladder cancer.