Significantly lower AGTRAP expression in tumor samples than in normal tissues was demonstrated in LUSC (lung squamous cell carcinoma), ALL (acute lymphoblastic leukemia), LAML (acute myeloid leukemia), KICH (p < 0.0001), and PCPG (pheochromocytoma and paraganglioma) (p < 0.05). This evidence concerns the gene AGTRAP and pheochromocytoma.