Clinical Research Directory

Inclusion Criteria: For ACS group STEMI * cTn\>99th ULN or CK-MB\>99th ULN * ST-segment elevation with a convex upward morphology * in conjunction with one or more of the following conditions: persistent ischemic chest pain; echocardiographic evidence of abnormal segmental ventricular wall motion; or abnormal coronary angiography findings. NSTEMI * cTn\>99th ULN or CK-MB\>99th ULN * accompanied by one or more of the following situations: persistent ischemic chest pain; new ST-segment depression or low and inverted T waves; echocardiography showing segmental ventricular wall motion abnormalities; abnormal coronary angiography. UA * cTn normal * ischemic chest pain with an electrocardiogram showing transient ST-segment depression or flattened and inverted T waves * evidence of coronary artery stenosis (e.g., CTA demonstrating ≥ 50% stenosis) For CCS group * Clinical Diagnosis Consistent with CCS Categories, meet any one of the following clinical scenarios: Stable Angina Pectoris, Ischemic Cardiomyopathy, Post-ACS Stable Phase, Long-Term CAD Management, Vasospastic or Microvascular Disease, Asymptomatic CAD * Laboratory and Imaging Confirmation: Resting ECG without ST-segment elevation or dynamic changes (excluding ACS), cTn normal or stable (no acute myocardial injury), ≥50% luminal stenosis in ≥1 epicardial coronary artery For control group * Patients without coronary artery stenosis, valvular heart disease, structural heart disease, or any other kind of cardiomyopathy Exclusion Criteria: * Lactating or pregnant women * Patients with malignant neoplasms * Severe hepatic/renal dysfunction * Severe hematological disorders * Autoimmune diseases