For example, while it has been shown that the downregulation of LOX contributes to the aortic stiffening in an obesity mouse model (Chen et al., 2013), other studies have shown that inhibition of LOX attenuated the angiotensin II induced aortic stiffening (Eberson et al., 2015). The gene discussed is LOX; the disease is obesity due to melanocortin 4 receptor deficiency.