In this study clear cell renal cell carcinoma showed the most intense and extensive expression of PSMA (Figure 5), followed by chromophobe renal cell carcinoma (combined score 5), whereas papillary renal cell carcinoma showed the least in both extent and intensity of PSMA expression (combined score 0–2), as shown in previous studies [32,40,51]. This evidence concerns the gene FOLH1 and clear cell renal carcinoma.