Liquidia Technologies, Inc.reported positive interim safety data from its open-label, multicenter Phase III clinical trial (INSPIRE) evaluating LIQ 861 an inhaled dry powder formulation of treprostinil, for the treatment of pulmonary arterial hypertension (“PAH”). The safety data at the two-week timepoint addresses the FDA data request for inclusion in a New Drug Application (“NDA”) submission.LIQ 861 was observed to be well-tolerated at the two-week timepoint in PAH patients. During this time period, LIQ 861 was evaluated at doses up to approximately 125 mcg with no study-drug related serious adverse events or dose-limiting toxicities. Reported treatment-emergent adverse events (“TEAEs”) were mostly mild in nature and consistent with inhaled prostacyclin therapy. The most common TEAEs reported with LIQ 861 in greater than 4% of PAH patients (n=109) were cough (25%), headache (13%), throat irritation (12%), diarrhea (7%), dizziness (6%), oropharyngeal pain (5%) and chest discomfort (5%). Patients have continued to receive treatment beyond two-weeks with the first patient dosed in March 2018. To date, a maximum tolerated dose of LIQ 861 has not yet been reached, with patients having been administered doses up to approximately 150 mcg. “LIQ 861 has the potential to maximize the therapeutic benefit of inhaled treprostinil in treating PAH by safely delivering higher doses into the lungs,” stated Nicholas Hill, MD, Chief Pulmonary, Critical Care & Sleep Division and Professor of Medicine at Tufts University School of Medicine and INSPIRE Principal Investigator. “Enabled by Liquidia’s proprietary PRINT technology, LIQ 861 is designed to provide the benefits of delivering prostacyclin analogs locally to the lungs via inhalation, potentially offering a targeted and effective approach with an acceptable systemic side effect profile.”