Those with lower GNRI values had higher CRP levels [11.3 (2.9–44.5) mg/L, 4.0 (1.0–14.0) mg/L, and 3.0 (1.0–12.0) mg/L in T1, T2, and T3, respectively; p < 0.0001] and a higher prevalence of ulcer/gangrene (49.6%, 44.6%, and 27.7% in T1, T2, and T3, respectively; p < 0.0001). This evidence concerns the gene CRP and ulcer disease.