GLUD1 and nonpapillary renal cell carcinoma: BP analysis suggested that these genes associated with GLUD1 in ccRCC were mainly enriched in proteasome-mediated ubiquitin-dependent protein catabolic processes, establishment of protein localization to organelle, Golgi vesicle transport, vesicle organization, macroautophagy, protein polyubiquitination and endosomal transport (Fig. 6a).