CST3 and type 2 diabetes mellitus: Systemic parameters were also collected, including systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting plasma glucose (FPG), duration of T2DM, glycated hemoglobin (HbA1c), triglyceride (TG), total cholesterol (CHOL), bicarbonate (HCO3), blood urea nitrogen (BUN), uric acid (UA), creatinine, cystatin C, and estimated glomerular filtration rate (eGFR).