Maegdefessel et al.[18,19] investigated the role of miRNA-29b in two murine models of experimental AAA: the porcine pancreatic elastase infusion model in C57BL/6 mice and the angiotensin II (AngII) infusion model in apolipoprotein E-deficient (or ApoE-/-) mice. The gene discussed is APOE; the disease is triple-A syndrome.