An Open-Label ProSpective MultiCENTer Study to Evaluate Safety and Tolerability of Dry Powder Inhaled Treprostinil in Pulmonary Hypertension

This is a medical research study to test an investigational form of a drug called treprostinil. “Investigational” means that the way in which treprostinil is prepared and given to patients has not been approved by the United States Food and Drug administration (FDA). The purpose of this clinical study is to investigate LIQ861 in patients with Pulmonary Hypertension associated with Interstitial Lung Disease.