Moreover, Carvalheiro T, and cols [23] determined that in the Mos of PBMCs, LAIR1 expression is downregulated upon LAIR1 engagement with anti-LAIR1 agonistic antibodies before LPS or IFN-α stimulation, most likely due to receptor internalization, as we observed in COVID-19 Mo1 patients under treatment with PTIC. Here, LAIR1 is linked to COVID-19.