For different molecular subtypes of cancers, a significant connection with YTHDF1 expression existed in BRCA, COAD, ESCA, HNSC, KIRP, LGG, LUSC, OV, PCPG (Pheochromocytoma and Paraganglioma), READ (rectum adenocarcinoma), STAD and UCEC (Figure 4). This evidence concerns the gene YTHDF1 and hereditary pheochromocytoma-paraganglioma.