As shown in Figure 2A, compared with the adjacent normal tissues (n = 611), the unpaired data analysis showed that the mRNA expression levels of PIF1 in ccRCC increased significantly (n = 72) (0.83 ± 0.544 vs. 0.213 ± 0.239, p < 0.001). The gene discussed is PIF1; the disease is nonpapillary renal cell carcinoma.