In sensitivity analysis using genetic associations leaving out the UK Biobank rather than 23andMe, monocyte chemotactic protein-1 (MCP1; CCL2) was nominally positively associated with any COVID-19 (Supplementary Table 6) and MIP1b was also nominally inversely associated with hospitalized COVID-19 (Supplementary Table 7). Here, CCL4 is linked to COVID-19.