Asthma and COPD are the most commonly diagnosed chronic lung diseases in the United States. While it is now recognized that a percentage of severe asthmatics develop fixed airway obstruction, little is known pertaining to the basic underlying mechanisms of this progression. Julie Ledford, PhD and her research team will examine the role of club cell secreted protein (CC16) in the context of airway infection as a previously overlooked link in understanding this progression. These studies may provide a novel therapeutic approach for treating individuals with low circulating CC16 in order to prevent lung function decline over time.