Safety and Tolerability Study of FG-3019 in Participants With Idiopathic Pulmonary Fibrosis

Key Inclusion Criteria: have a diagnosis of idiopathic pulmonary fibrosis (IPF) by clinical features and surgical lung biopsy or according to the American Thoracic Society criteria Key Exclusion Criteria: have a history of significant exposure to organic or inorganic dust or drugs known to cause pulmonary fibrosis have interstitial lung disease other than IPF have pulmonary fibrosis associated with connective tissue disease have other forms of idiopathic interstitial pneumonia, such as desquamative interstitial pneumonia, acute interstitial pneumonia, nonspecific interstitial pneumonia, or cryptogenic organizing pneumonia have end-stage IPF (total lung capacity of less than 45% of predicted value) are listed for lung transplantation at the time of study enrollment have significant heart problems are pregnant or lactating (if female) Other inclusion and exclusion criteria may apply.