お知らせ • May 24
U.S. FDA Approves Liquidia Corporation's YUTREPIA (Treprostinil) Inhalation Powder for Patients with Pulmonary Arterial Hypertension (Pah) and Pulmonary Hypertension Associated with Interstitial Lung Disease
Liquidia Corporation announced that the U.S. Food and Drug Administration (FDA) has approved YUTREPIA (treprostinil) inhalation powder, a prostacyclin analog for adults with pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD) to improve exercise ability. YUTREPIA is the first and only prostacyclin dry-powder formulation enabled by Liquidia’s proprietary PRINT™ technology, which yields uniform, free-flowing particles designed to enhance deep-lung delivery via an easy-to-use, low-effort device requiring less inspiratory effort. As previously disclosed, United Therapeutics Corporation (UTHR) filed a complaint on May 9, 2025, in the U.S. District Court for the Middle District of North Carolina (Case No. 1:25-cv-00368) against Liquidia alleging infringement of U.S. Patent No. 11,357,782 (the ‘782 patent) and seeks to enjoin Liquidia from commercializing YUTREPIA to treat PAH and PH-ILD. UTHR has filed a motion for temporary restraining order and preliminary injunction to block Liquidia from commercially launching YUTREPIA. Oral argument on the motion was held on May 20, 2025. The motion remains pending with the Court. Pulmonary arterial hypertension (PAH) is a rare, chronic, progressive disease caused by narrowing, thickening or stiffening of the pulmonary arteries that can lead to right heart failure and eventually death. Currently, an estimated 45,000 patients are diagnosed and treated in the United States. There is currently no cure for PAH, so the goals of existing treatments are to alleviate symptoms, maintain or improve functional class, delay disease progression, and improve quality of life. Pulmonary hypertension (PH) associated with interstitial lung disease (ILD) includes a diverse collection of up to 200 different pulmonary diseases, including interstitial pulmonary fibrosis, chronic hypersensitivity pneumonitis, connective tissue disease-related ILD, and chronic pulmonary fibrosis with emphysema (CPFE) among others. Any level of PH in ILD patients is associated with poor 3-year survival. A current estimate of PH-ILD prevalence in the United States is greater than 60,000 patients, though population size in many of these underlying ILD diseases is not yet known due to factors including underdiagnosis and lack of approved treatments until March 2021, when inhaled treprostinil was first approved for this indication. YUTREPIA is an inhaled dry-powder formulation of treprostinil delivered through a convenient, low-effort, palm-sized device. YUTREPIA was designed using Liquidia’s PRINT technology, which enables the development of drug particles that are precise and uniform in size, shape and composition, and that are engineered for enhanced deposition in the lung following oral inhalation. Liquidia has completed the INSPIRE trial, or Investigation of the Safety and Pharmacology of Dry Powder Inhalation of Treprostinil, an open-label, multi-center phase 3 clinical study of YUTREPIA in patients diagnosed with PAH who are naïve to inhaled treprostinil or who are transitioning from Tyvaso (nebulized treprostinil). YUTREPIA is currently being studied in the ASCENT trial (NCT06129240), or An Open-Label ProSpective MultiCENTer Study to Evaluate Safety and Tolerability of Dry Powder Inhaled Treprostinil in PH, with the objective of informing YUTREPIA’s dosing and tolerability profile in patients with PH-ILD. YUTREPIA was previously referred to as LIQ861 in investigational studies.