Patients with CD8domBdep subtype had a longer COVID-19 duration of 9.1±4.0 days, compared with 6.8±2.8 days in CD8domB+ (P = 0.045), 6.0±1.5 days in CD4/CD8norBdep (P = 0.001), and 4.8±2.3 days in CD4/CD8norB+ (P = 0.001). The gene discussed is CD4; the disease is COVID-19.