In particular, the levels of pro-inflammatory CD14+CD16+ monocytes were elevated in the lungs of 28 hospitalized COVID-19 patients relative to healthy controls [184], which was corroborated by a study that found increased CD14+CD16+ monocytes with high expression of IL-6 in the peripheral blood of 33 COVID-19 patients [182]. This evidence concerns the gene CD14 and COVID-19.