The MIDN level was positively linked with the stemness in THYM, pheochromocytoma and paraganglioma (PCPG), THCA, and so on, and negatively associated with the stemness in rectum adenocarcinoma (READ), LIHC, and so on (Figure 9B). The gene discussed is MIDN; the disease is pheochromocytoma-paraganglioma.