FOLH1 and nonpapillary renal cell carcinoma: Additionally, the subset of tumors designated as ‘RCC, not otherwise specified’ (n = 987) had lower FOLH1 expression compared to that in ccRCC (10.88 versus 19.37 TPM, p < 0.001) and likely represented an admixed group of ccRCC and non-ccRCC histopathology.