PRC1 and nonpapillary renal cell carcinoma: Next, we further analyzed the expression patterns of PRC1 in ccRCC and adjacent normal kidney tissues among the NJMU ccRCC clinical cohort, TCGA and Genotypic Tissue Expression (GTEx) databases, as well as 11 GEO datasets, including GSE53000, GSE46699, GSE15641, GSE781, GSE40435, GSE6344, GSE36895, GSE53757, GSE66270, GSE66271 and GSE105261 cohort.