GLUD1 and nonpapillary renal cell carcinoma: We performed univariate Cox analysis of the above clinical characteristics and GLUD1 expression with survival time and status of ccRCC patients, the results showed that GLUD1 was a protective factor for survival in ccRCC patients (Fig. 3a, Table 1), and multivariate Cox analysis exhibited the same results (Fig. 3b, Table 2), indicating that GLUD1 could be an independent factor for prognosis in ccRCC.