Pro-cathepsin H, regenerating islet-derived protein 3-gamma, glyceraldehyde-3-phosphate dehydrogenase, CD166 antigen and beta-2-glycoprotein 1 can be biomarkers of polycystic kidney disease (Schaefer et al., 1996), urinary tract infection (Spencer et al., 2015), ureteropelvic junction obstruction (Mesrobian et al., 2010), type 1 diabetes (Suh et al., 2015) and Dent’s disease (Cutillas et al., 2004), respectively. The gene discussed is REG3G; the disease is polycystic kidney disease.