The Cochran Q test showed no heterogeneity in the relationships of Asp/PC ae C32:2 and Glu/PC ae C32:2 with serum Hp from T2DM patients and non-DM subjects (I2 = 0, P = 0.740; I2 = 0, P = 0.860), respectively. Here, HP is linked to type 2 diabetes mellitus.