We also observed significantly lower levels of ferritin and IL-6 between COVID-19 patients with HOMA-IR ≤ 3 (167.0 (105.0–526.0) vs. 474.0 (231.2–834.5) μg/L, p = 0.04 and 1.50 (1.50–3.26) vs. 5.19 (1.50–10.45) pg/mL, p = 0.01; respectively), although levels of other APPs (CRP, PCT) did not differ between these two subgroups. This evidence concerns the gene IL6 and COVID-19.