PBMC as Biomarkers of Diabetic Cardiomyopathy

Inclusion Criteria: Inclusion criteria common to the 4 groups: * Patient attending a scheduled cardiology or endocrinology follow-up visit * Patient fasting for blood sampling * Male or female aged 40 to 85 years inclusive * Patient not opposing participation in this research * Patient agreeing to the storage of biological samples and to genetic analyses Group 1: No-T2D +MS / No-HF (control group) \- Patient without T2D or MS and without heart failure coming to a consultation or day hospital for another reason (e.g. screening for atypical symptom, etc.) Group 2: No-T2D +MS / HFpEF or HFmrEF * Patient without T2D or MS * HFpEF or HFmrEF. diagnosed Group 3: T2D+MS / no-HF * Patient diagnosed with T2D+MS * \- Absence of HF Group 4: T2D +MS / HFpEF or HFmrEF * Patient diagnosed with T2D and MS * HFpEF or HFmrEF. diagnosed Exclusion Criteria: Non-inclusion criteria common to the 4 groups: * History of cardiovascular disease (valvular disease \[greater than moderate severity\], radiation-induced, post-cardiotoxic chemotherapy, amyloidosis, etc.) other than HFpEF or HFmrEF * Acute or ongoing systemic inflammatory or infectious disease * History of known coronary artery disease * Uncontrolled hypertension (\>160/100 mmHg) * Pregnant or breastfeeding women (based on interview) * Persons deprived of liberty by judicial or administrative decision * Persons undergoing psychiatric care * Patient under legal protection (guardianship or curatorship) * Subject participating in a…