Levels of NQO1 mRNA were negatively correlated with CAFs in lung adenocarcinoma, lung adenocarcinoma, ovarian serous cystadenocarcinoma, stomach adenocarcinoma, and thyroid carcinoma but positively correlated with lymphoid neoplasm diffuse large B-cell lymphoma, glioblastoma multiforme, glioma, brain lower grade glioma, pheochromocytoma, and paraganglioma, testicular germ cell tumors, thymoma, and uveal melanoma. Here, NQO1 is linked to pheochromocytoma.