In the previous report, mean circulating levels of netrin-1 were 1.77 pg/mL in normal controls and 0.96 pg/mL in patients with type 2 diabetes, but 275.9 pg/mL in normal controls and 441.0 pg/mL in patients with type 2 diabetes in our study. The gene discussed is NTN1; the disease is type 2 diabetes mellitus.