Retinol binding protein 4 (RBP4) is a adipokine.
RBP4 may be used as a predictive factor of diabetic nephropathy patients complicated with silent cerebral infarction (SCI). and is positively correlated with cognitive dysfunction. RBP4/Lp-PLA2/Netrin-1 pathway activation may be one of the occurrence mechanisms in diabetic nephropathy complicated with SCI 1).