FABP3 and nonpapillary renal cell carcinoma: A total of 248 proteins were found to be differentially expressed, with three proteins—CALB1, GSN, and FABP3—selected for examination in a TMA panel comprised of ccRCC (n = 40), pRCC (n = 31), chRCC (n = 16), and renal oncocytic lesions (n = 9) with corresponding NATs.