H19 and abdominal aortic aneurysm: Emerging evidence shows that diverse cells, such as hematopoietic stem cells [90] and neurons [91, 92], and cellular processes, including abdominal aortic aneurysm [93], diabetic nephropathy [94], hepatocyte proliferation [95, 96], tumorigenesis [97, 98], acute promyelocytic leukemia [99], ulcerative colitis [100], senescence [101], and endometriosis [102], are regulated by H19.