IL6 and type 2 diabetes mellitus: Metrnl demonstrated a negative correlation with BMI (r = -0.354, p = 0.004), FBG (r = -0.420, p = 0.001), HOMA-IR (r = -0.338, p = 0.007), TNF-α (r = -0.296) and IL-6 (r = -0.296, p = 0.018) in patients with T2DM (Table 4).