In another cell study, Ang‐(1–7) was found to downregulate TGF‐β1/SMAD2/3 and inhibit the transformation of human lung fibroblasts into myofibroblasts by reducing the expression of Collagen I.152Unfortunately, these studies were mainly based on other tissues and cells, and not on AAA or blood vessels. The gene discussed is TGFB1; the disease is triple-A syndrome.