The expression of TMCC1-AS1 was significantly lower in tumors such as kidney chromophobe, pheochromocytoma & paraganglioma and thyroid cancer than in normal tissues, while its expression was higher than in normal tissues in tumors such as bile duct cancer, colon cancer, head and neck cancer, kidney clear cell carcinoma, kidney papillary cell carcinoma and lung adenocarcinoma (Fig. 9F). The gene discussed is TMCC1; the disease is pheochromocytoma.