Moreover, an analysis of the Arabic population has shown that the rs12252 SNP within the interferon-induced transmembrane protein (IFITM)3 gene (genotype GA or GG) is strongly associated with increased risk of hospitalization due to COVID-19 and mortality, correlating with decreased serum IFNγ levels [14]; whereas 2 studies on Caucasian and Chinese population have shown that this SNP was strongly correlated to increased risk of hospitalization when characterized by the C allele, in particular when in homozygosis [15, 16]. The gene discussed is IFNG; the disease is COVID-19.