The results showed that the significant risk factors included cystatin C (P = 0.007, OR = 5.081), the presence of hypertension (P = 0.011, OR = 3.527), age (P<0.001, OR = 1.181), GA (P = 0.002, OR = 1.089) and diabetes duration (P = 0.008, OR = 1.074) (Table 2). This evidence concerns the gene CST3 and diabetes mellitus.