The purpose of the research project is to investigate the potential association of the complexity and the severity of coronary artery disease (as assessed via SYNTAX score) with patients' metabolic profile. The aim of the study is to combine biochemical, clinical and laboratory data in order to create an algorithm that will enable an individualized therapeutic patient approach.
Inclusion Criteria: 1. Patients giving voluntary written consent to participate in the study 2. Adults 3. Patients without previous history of coronary artery disease 4. Patients who are admitted in the Department of Cardiology in the AHEPA University General Hospital of Thessaloniki and undergo coronary angiography for clinical purposes Exclusion Criteria: 1. Cardiac Arrest at admission 2. Patients with serious concurrent disease and life expectancy of \< 1 year