NPPB and type 2 diabetes mellitus: The study has shown that the levels of serum adropin positively correlated with LVEF (r = 0.33; p = 0.001), GLS (r = 0.33; p = 0.001), HDL-C levels (r = 0.30; p = 0.001), creatinine (r = 0.26; p = 0.002) and inversely correlated with LAVI (r = −0.36; p = 0.001), CKD (r = −0.34; p = 0.001), T2DM (r = −0.39; p = 0.001), BMI (r = −0.31; p = 0.001), triglyceride levels (r = −0.30; p = 0.001), fasting glucose (r = −0.30; p = 0.001), HOMA-IR (r = −0.30; p = 0.012), LDL-C (r = −0.24; p = 0.001) and NT-proBNP (r = −0.21; p = 0.012).