HLA-S and COVID-19: In spite of the fact that several studies have illustrated the associations of HLA alleles with COVID-19 infection18-20 and some software has been developed to predict the affinity of certain HLAs for viral peptides to assess the association of HLA types with the severity of COVID-19,14 some GWA (Genome-Wide Association) studies have reported no association between HLA and COVID-19.21