Further, microalbuminuria and diabetic nephropathy patients marked the excretion of Ig kappa chain V–II, protein 25, Ig lambda 2 chain region, Alpha 1 acid glycoprotein 1, Apolipoprotein A1, transthyretin/prealbumin, Ig kappa C chain region, AMBP, Cystatin C, zinc alpha 2 glycoprotein and Ubiquitin (Table 3, Fig. 2e, f). The gene discussed is CST3; the disease is diabetic kidney disease.