FOLH1 and nonpapillary renal cell carcinoma: Six studies classified the analyzed lesions according to the World Health Organization/International Society of Urological Pathology (WHO/ISUP) grading score [33,34,35,36,37,39], and five included an immunohistochemistry analysis to evaluate PSMA staining in the neovasculature of ccRCC lesions [33,34,35,36,42].