The obese HF subjects had higher FABP4 levels compared to the non-obese HF subjects [35.3 μg/L (22.3–62.3) versus 25.0 μg/L (16.6–42.5), respectively, p=0.004], even after adjusting for age, gender, and the eGFR (p<0.001). Here, FABP4 is linked to hydrops fetalis.