IFITM3 and COVID-19: When we stratified the analysis according to gender and IFITM3 rs34481144 polymorphism frequency, COVID-19 mortality was correlated with IFITM3 rs34481144 CT (OR 1.50, 95% CI 1.16–1.95) and TT genotypes (OR 3.38, 95% CI 1.05–10.87) in female, but was correlated with IFITM3 rs34481144 CT genotype (OR 1.55, 95% CI 1.21–1.99) in male (Table 3).