MAPT and obstructive sleep apnea syndrome: <h4>Study objectives</h4>To determine whether sleep architecture is associated with heterogeneity in serum biomarkers of neuronal injury, astroglial stress, tau-related pathology, and neuroplasticity in adults with obstructive sleep apnea (OSA).<h4>Methods</h4>Adults referred for suspected OSA underwent overnight polysomnography and next-morning fasting serum sampling.