Of note, the glycosyltransferase fukutin (Fktn, eQTL LOD=8.02, P<0.001) regulates the number and structure of podocytes (Kojima et al., 2011), and the α-1-microglobulin/bikunin precursor (Ambp, eQTL LOD=14.53, P<0.001) is elevated in the urine of patients with diabetic nephropathy (Zubiri et al., 2014). This evidence concerns the gene AMBP and diabetic kidney disease.