PTP4A2 and nonpapillary renal cell carcinoma: Using the RSF algorithm, ten genes (i.e., AMD1, CCSER2, CIB1, DRAP1, HMGB2, HMGN1, NPIPB5, PTP4A2, RORA, and SAP18) were found to be relevant to ccRCC survival rates (Figure 3B and Supplementary Figure 3).