We explored other potential combinations: IL-1ꞵ/TNF-α (p = 0.003), IL-1ꞵ/MIP-1α (p = 0.003), and TNF-α/MIP-1α (p = 0.103), where the first two combinations correctly classify 90.9 and 80.0%, respectively, of the post COVID-19 cases (Figure 3). The gene discussed is IL1B; the disease is COVID-19.