Simplified scheme of the metabolic pathways analyzed in papillary (PRCC) and clear cell renal cell carcinoma (CCRCC). Red and blue arrows on left and right side of black ones indicate the characteristic rewiring of metabolic pathways in PRCCs and in CCRCCs, respectively. High expressions of certain enzymes suggest balanced nutrient utilization, intensive glutaminolysis (GLS), acetate utilization (ACSS2), fatty acid oxidation (CPT1A), and oxidative phosphorylation (ATPB) were detected in PRCCs (thick red arrows), while high expressions of glycolytic enzymes (GLUT1, HXK2, PFKP) could correlate with higher glycolytic capacity in CCRCCs (thick blue arrows). Created with BioRender.com.