OSA, Obstructive Sleep Apnea; SBP, Systolic Blood Pressure; DBP, Diastolic Blood Pressure; AHI, Apnea-Hypopnea Index; LOS, Lowest Oxygen Saturation; VEC, Vascular Endothelial Cell; ODI, Oxygen Desaturation Index; AT-1, Angiotensin-1; AT-2, Angiotensin-2. The gene discussed is AGT; the disease is obstructive sleep apnea syndrome.