BOP1 and nonpapillary renal cell carcinoma: The results indicated that the expression of BOP1 protein in BRCA, clear cell renal cell carcinoma (ccRCC), COAD, LUAD, OV, and UCEC was significantly higher than that in corresponding normal tissues (P < 0.05) (Figure 3), consistent with the results of BOP1 mRNA expression levels from TCGA.