NFKB1 and cystic fibrosis: Reduction of hyperinflammatory status of CF cell lines: naringin cosprayed with 5% leucine at 30 mM concentration inhibits both mitogen‐activated protein kinase/extracellular signal‐regulated kinase (MAPK/ERK and nuclear factor‐κB (NF‐κB) pathways) cell signaling pathways required for cytokine production, both of which are over activated in bronchial epithelial cells from CF patients.