GMFG and hereditary pheochromocytoma-paraganglioma: The expression values of GMFG in 29 different cancers and corresponding normal samples were shown in Fig. 1b, four cancers (mesothelioma (MESO), pheochromocytoma and paraganglioma (PCPG), sarcoma (SARC), and uveal melanoma (UVM)) were excluded from the expression profile analysis due to small or a lack of corresponding normal samples.