Samples collected from 358 patients (284 are COVID-19) on day 0, 202 patients (197 are COVID-19) on day 3, and 131 patients (all are COVID-19) on day 7, as well as 42 patients who died from COVID-19 within 28 days, were extracted for analyzing TYMP expression. The gene discussed is TYMP; the disease is COVID-19.