IFNL4 and COVID-19: The frequency of the favorable genotypes of IFNL3/4 SNPs (IFNL3 rs12979860 CC, rs12980275 AA, rs8099917 TT, and IFNL4 rs368234815 TT/TT) was significantly higher among COVID-19 survivor patients, whereas unfavorable genotypes of IFNL3/4 (IFNL3 rs12979860 TT, rs12980275 GG, rs8099917 GG, and IFNL4 rs368234815 ∆G/∆G genotypes) were observed in COVID-19 nonsurvivor patients (Fig. 1).