a, Manhattan plot of a genome-wide association study of 3,199 hospitalized patients with COVID-19 and 897,488 population controls. The dashed line indicates genome-wide significance (P = 5 × 10−8). Data were modified from the COVID-19 Host Genetics Initiative2 (https://www.covid19hg.org/). b, Linkage disequilibrium between the index risk variant (rs35044562) and genetic variants in the 1000 Genomes Project. Red circles indicate genetic variants for which the alleles are correlated to the risk variant (r2 > 0.1) and the risk alleles match the Vindija 33.19 Neanderthal genome. The core Neanderthal haplotype (r2 > 0.98) is indicated by a black bar. Some individuals carry longer Neanderthal-like haplotypes. The location of the genes in the region are indicated below using standard gene symbols. The x axis shows hg19 coordinates.