Nevertheless, a recent study showed that [18F]FDG uptake reflected FBP1 expression levels in patients with ccRCC since it was higher in ccRCCs with low fructose 1,6-bisphosphatase 1 (FBP1) expression compared to patients with high FBP1 expression [20]. Here, FBP1 is linked to nonpapillary renal cell carcinoma.