Furthermore, the administration of ghrelin does not significantly affect the IGF-1 level in healthy volunteers (Enomoto et al, 2003), patients with cardiovascular (Nagaya et al, 2004) or pulmonary diseases (Nagaya et al, 2005), tumour-bearing animals (DeBoer et al, 2007), or our patients with CACS. The gene discussed is GHRL; the disease is lung disorder.