RBM15 and nonpapillary renal cell carcinoma: Finally, eight ccRCC-related m6A RNA methylation genes, including RBM15, WTAP, CBLL1, FTO, YTHDC1, YTHDC2, YTHDF2, and HNRNPA2B1, were selected for the construction of the m6A-related diagnostic model (Figure 1C).