CRP and obstructive sleep apnea syndrome: A meta-analysis indicates that a series of inflammatory markers were elevated in individuals with OSA, including C-Reactive Protein (CRP), Tumor Necrosis Factor (TNF)-α, Interleukin (IL)-6, IL-8, intercellular cell adhesion molecule (ICAM), Vascular Cell Adhesion Molecule (VCAM), and selectins (12).