According to the study by Bychkov et al., the expression of PSMA was reported to be 19% in follicular adenomas, 46% (n = 24/52) in follicular thyroid carcinoma (FTC), and 51% in papillary thyroid carcinoma (PTC) (n = 61/120) [4]. This evidence concerns the gene FOLH1 and thyroid cancer, nonmedullary, 2.