In a case–control study of 207 COVID-19 patients versus 252 matched controls, GSTP1 rs1695 (Ile105Val) variant carriers had significantly lower odds of developing COVID-19 (p = 0.002), while individuals with the GSTM3 CC genotype showed increased susceptibility (p = 0.024) (Coric et al., 2021b). This evidence concerns the gene GSTM3 and COVID-19.