ANGPTL4 and hypertensive disorder: There were lower levels of ANGPTL4 in the hypertension group (541.78 ± 453.35 vs. 659.54 ± 799.80 ng/mL, P < 0.05) and the old-aged group (541.10 ± 717.23 vs. 632.02 ± 504.20 ng/mL, P < 0.05) than in their control groups (Supplementary Table 2).