The inverse association between circulating vitamin D and risk of bladder cancer was stronger among men with lower vitamin D binding protein (DBP) [low DBP: 0.47 (0.23–1.00), high DBP: 0.83 (0.40–1.75)]23, and among low-FGFR3 expressers24. This evidence concerns the gene FGFR3 and urinary bladder cancer.