For the differentially expressed proteins between moderate OSA and non-OSA groups, proteins were mainly enriched in “regulation of immune response,” “leukocyte mediated immunity,” “humoral immune response,” etc. under the category of biological process; were enriched in “secretory granule,” “vesicle,” “extracellular membrane-bounded organelle,” etc. under the category of cellular component; and were enriched in “thyroid hormone binding,” “complement binding,” “calcium-dependent protein binding,” etc. under the category of molecular function (Figure 5B). This evidence concerns the gene TG and obstructive sleep apnea syndrome.