Based on other studies showing H19 upregulation in aortic aneurysm and cardiac ischemia, as well as a study that found age‐related loss of imprint in rat liver, we also probed H19 expression changes in the liver, left ventricle, and ascending aorta (Greco et al. 2016; Agba et al. 2017; Li et al. 2018) (Fig. 3E). Here, H19 is linked to aortic aneurysm.