As indicated in Table 2, there were statistically significant differences in 8 variables, including BMI (P = 0.030), DFU with infection (P < 0.001), DPN (P = 0.002), DN (P < 0.001), ABI (P = 0.002), Hb (P = 0.018), Alb (P = 0.025), HbA1c (P < 0.001), and malnutrition (P < 0.001) between the two groups. The gene discussed is GSTM1; the disease is nutritional deficiency disease.