ACEI, angiotensin-converting enzymes inhibitor; AHI, apnea-hypopnea index; ARB, angiotensin receptor blocker; CABG, coronary artery bypass grafting; DES, drug eluting stent; Hs-CRP, high-sensitivity C-reactive protein; IQR, interquartile range; NSTEMI, non-ST-segment elevation myocardial infarction; ODI, oxygen desaturation index; OSA, obstructive sleep apnea; PCI, percutaneous coronary intervention; SaO2, arterial oxygen saturation; SD, standard deviation; SMuRF, standard modifiable risk factor; STEMI, ST-segment-elevation myocardial infarction; TIMI, thrombolysis in myocardial infarction. The gene discussed is ACE; the disease is obstructive sleep apnea syndrome.