SLC6A20 and COVID-19: Collectively, analysis of missense variation and eQTL catalogs suggests 12 potential effector genes in COVID-19 loci (ACE2, C6orf15, CCHCR1, HLA-C, IFNAR2, IL10RB, LST1, NXPE3, PSORS1C1, SENP7, SLC6A20 and TCL19), although functional studies are required to confirm these predictions.