Clinical and Genetic Characteristics of Coronary Artery Disease in Chinese Young Adults

Study Overview
=================
Brief Summary
-----------------
The aim of this study is to identify genetic loci,or gene variations contributing to the development of coronary artery disease (CAD) in Chinese young adults. Investigators will compare coronary angiogram results to genetic findings within young CAD patients.

Detailed Description
-----------------
During last 10 years, the rise in coronary artery disease (CAD) prevalence in Chinese young adults is observed and percutaneous coronary intervention (PCI) is generally considered to be low operative risk in these young patients. Genome-wide association studies have identified a considerable number of common genetic variants related to CAD. However, the extent to which these genetic variants are related to the future cardiovascular events, the prevalence, extent, severity, and prognosis of young patients with CAD is not clear. The aim of this study is to investigate the genetic loci, or gene variations contributing to the development and prognosis of CAD in Chinese young adult. Investigators will compare the angiogram results to genetic findings first in patients with different stages of CAD. Then, investigators will collect patients from hospital discharge registry, and compare long-term outcome as well as on operative details in different gene groups. The results of the study provide a possibility to develop a gene test to recognize patients at risk at its early stage, and needing for preventive medicine.

Official Title
-----------------
Clinical and Genetic Characteristics of Coronary Artery Disease in Chinese Young Adults

Conditions
-----------------
Coronary Artery Disease, Percutaneous Coronary Intervention

Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion criteria: premature CAD, includes patients who aged ≥ 18 and ≤ 45 years , and with at least one main coronary artery stenosis ≥ 50% confirmed by coronary angiography, involving left main coronary artery, left anterior descending branch, left circumflex branch or right coronary artery, and manifested as occult CAD, stable CAD, unstable angina pectoris, non-ST segment elevated myocardial infarction and ST segment elevated myocardial infarction; mature CAD, refers to patients who aged ≥ 65 years and meat the same CAD diagnostic criteria as above; age matched individuals who had coronary arteries without obvious stenosis. Exclusion criteria: severely sick with limited life-expectancy < 1 year; patients with malignancies; pregnant or planning for pregnancy.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Early-onset CAD<br>The anticipated 2000 young CAD patients who aged ≤45years undergoing coronary angiography will be recruited in the prospective cohort. Medical history and risk-factor information were obtained by interviewing patients and by abstracting information from medical records. | |
| Late-onset CAD<br>The anticipated 2000 old CAD patients aged≥65years undergoing coronary angiography will be recruited in the prospective cohort. Medical history and risk-factor information were obtained by interviewing patients and by abstracting information from medical records. | |
| Age-matched controls<br>The anticipated 2000 control subjects without obvious coronary stenosis aged≤45years or ≥65years will be recruited in the prospective cohort. Medical history and risk-factor information were obtained by interviewing patients and by abstracting information from medical records. | |

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of cardiac death | Any death from cardiac conditions | 36 months | 
| Number of patients developing myocardial infarction | Any case of acute myocardial infarction which meet the Criteria according to current guidelines. | 36 months | 
| Number of patients developing stroke | Any events of ishcemic stroke, TIA or hemorrhagic stroke | 36 months | 
| Number of participants undergoing unscheduled repeat revascularization of target or non-target vessel | Any unshceduled percutaneous coronary intervention or coronary artery bypass grafting after primary revascularization | 36 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of stent thrombosis, bleeding、non-cardiac death and all-cause death. | Composite of stent thrombosis, bleeding、non-cardiac death and all-cause death. | 36 months | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Young Patient, Genetic Characteristics