The HF subjects with diabetes showed higher FABP4 levels compared to the non-diabetic HF subjects [33.0 μg/L (20.2–76.0) versus 27.8 μg/L (17.2–44.2), respectively, p=0.019], even after adjusting for age, gender, BMI and the eGFR (p=0.002). This evidence concerns the gene FABP4 and diabetes mellitus.