CCR5 and COVID-19: In the region on chromosome 3, which appears to be significantly associated with severe COVID-19 at the genome-wide level (https://www.covid19hg.org/results, accessed on 10 May 2021), we selected 52 SNPs with suggestive statistical significance (P ≤ 1 × 10−5) and that were eQTLs for CCR5 in lung (208 samples from GTEx database) (Supplementary Table S1).