A further key COVID-19 GWAS locus demonstrating context-specific activity is rs6517156, which forms a gQTL for IFNAR2 post IFN-γ (FDR 6.2 × 10−6), again emphasising the importance of the IFN-γ stimulus to elucidation of the COVID-19 disease state (Fig. 3f). Here, IFNG is linked to COVID-19.