TRAF2 and hereditary pheochromocytoma-paraganglioma: Conversely, TRAF2 was identified as a high-risk gene in ACC, COAD, KIRC, LGG, LIHC, MESO, and pheochromocytoma and paraganglioma (PCPG) (HR > 1, P < 0.05, Fig. 4, Table 2).