The expression of PSMA is low in brain, kidney, liver, small intestine and other tissues, and high in many malignant tumors, such as colon cancer, esophageal cancer, thyroid cancer, lung cancer, renal cell cancer and brain tumors, and especially in prostate cancer(http://gepia2.cancer-pku.cn/). The gene discussed is FOLH1; the disease is thyroid gland carcinoma.