In corroboration with these cell line‐based data, scRNA‐seq analysis of bronchoalveolar lavage fluids from healthy donors and COVID‐19‐infected patients revealed an up‐regulation of CH25H in macrophages and epithelial cells in COVID‐19‐infected patients compared to healthy donors (Figs 1B and EV1A; Liao et al, 2020). This evidence concerns the gene CH25H and COVID-19.