ABO and COVID-19: A lung-specific cis-expression quantitative trait loci (cis-eQTLs) from GTEx v.820 (n = 515) and the Lung eQTL Consortium21 (n = 1,103) provided further support for a subset of loci (Supplementary Table 7), including FOXP4 (chr. 6p21.1) and ABO (chr. 9q34.2), OAS1/OAS3/OAS2 (chr. 12q24.13) and IFNAR2/IL10RB (21q22.11), where the COVID-19-associated variants modify gene expression in lung.