FCHSD1 and hereditary pheochromocytoma-paraganglioma: For cancers of different molecular subtypes, significant associations in FCHSD1 expression were shown in 11 cancer types, including LGG, pheochromocytoma and paraganglioma (PCPG), COAD, PRAD, BRCA, UCEC, stomach adenocarcinoma (STAD), LIHC, HNSC, OV, and GBM (Figures 4M–W).