For example, on chromosome 12, the genes mapping to the locus tagged by rs10774671 (COVID-19 Host Genetics Initiative et al. 2021) are both OAS1 and OAS3. In OAS3, the coding variant is an Arginine to Lysine substitution (rs1859330) in high LD (0.8) with the tag SNP. This evidence concerns the gene OAS3 and COVID-19.