In the peri-COVID group, in the univariate analysis, mortality was associated with protein levels, urea, creatinine, BT, INR, COVID-19, Hb, Ht, neutrophils, lymphocytes, RDW, NLR > 5.39, MCVL > 79.4, and IIC > 12.12. The gene discussed is GSTM1; the disease is COVID-19.