In the entire group of patients, we found positive correlations of adropin levels with LAVI (r = 0.32; p = 0.001), NYHA HF class II (r = 0.30, p = 0.012), BMI (r = 0.29, p = 0.010), and eGFR (r = 0.31; p = 0.001), and negative correlations of adropin levels with LVEF (r = −0.34; p = 0.001) and NT-proBNP (r = −0.36; p = 0.001), but these were not associated with the HOMA index. This evidence concerns the gene NPPB and hydrops fetalis.