RecruitingGenomic and Proteomic Analysis of Disease Progression in Idiopathic Pulmonary Fibrosis (IPF)The purpose of the study is to identify genetic and biologic markers that may predict the loss of lung function due to idiopathic pulmonary fibrosis. The studies will compare genetic and biologic markers of samples to changes in symptoms. The ultimate goal is to predict if or when patients are likely to experience a rapid decline in lung function due to disease progression.