TNF and obstructive sleep apnea syndrome: Two meta-analyses evaluating the association between CRP and other inflammatory biomarkers (Table 1), i.e., IL-6, IL-8 and TNF-α and adhesion molecules such as Intercellular Adhesion Molecule (ICAM), Vascular Cell Adhesion Molecule (VCAM) and selectins reported a positive association with OSA [53,54,55].