Interleukin 8 (IL-8) is a pro-inflammatory molecule that is found in high concentration in the bronchial alveolar lavage (BAL) of patients with airway inflammatory diseases like cystic fibrosis (CF) (Konstan et al., 1994; O’Sullivan and Fredman, 2009), asthma (Lamblin et al., 1998), and chronic obstructive pulmonary disease (COPD) (Keatings et al., 1996; Hollander et al., 2007) and in the nasal mucosa of patients with allergic rhinitis (Cui et al., 2015). The gene discussed is CXCL8; the disease is allergic rhinitis.