TGF-β might also participate in the mechanisms of ECM remodeling underlying post-COVID-19 sequelae, as it was revealed by Colarusso and others (2021) who found higher TGF-β, CXCL10, and IL-1α plasma levels in post-COVID-19 patients who exhibited ground-glass opacities in the chest CT scan. This evidence concerns the gene TGFB1 and COVID-19.