C1QTNF12 and acute myocardial infarction: Zhang et al. found that the peripheral venous serum CTRP12 levels in acute myocardial infarction patients were significantly decreased before PCI, continued to decrease on the 3rd postoperative day, and showed an increasing trend on the 5th and 7th postoperative days [30], which was different from our observation in CAD patients after PCI treatment.