METTL14 and nonpapillary renal cell carcinoma: The findings suggested that the elevated expression levels of m6A regulators, such as CBLL1, METTL14, YTHDC1-2, YTHDF2-3 and ZC3H13, were significantly associated with favorable prognosis of ccRCC, which showed relatively converse clinical implications in patients with other cancers, such as ACC, LGG, LIHC, LUAD, SARC, etcetera (Figure 2E).