Another study by Huang et al. reported that serum haptoglobin (Hp) levels were significantly higher in subjects with diabetic kidney disease (DKD) than controls, and associated with serum creatinine levels, it is suggested that serum Hp levels may be used as a potential biomarker for the early diagnosis and monitoring of DKD in T2DM patients [27]. The gene discussed is HP; the disease is diabetic kidney disease.