A Phase 3 Study to Evaluate the Safety and Efficacy L606 in Participants With PH-ILD

Inclusion Criteria

• •Participant is between 18 years to 80 years old.
• •Has a confirmed diagnosis of ILD based on High Resolution Computed Tomography (HRCT) chest imaging.
• •Evidence of PH as demonstrated from Right Heart Catheterization (RHC) with the following hemodynamic parameters:
• •Pulmonary vascular resistance (PVR) ≥ 320 dynes.sec/cm5 (i.e. 4 Woods Units (WU)), and
• •Mean Pulmonary Artery Pressure (mPAP) of ≥ 25 mmHg, and
• •\- Pulmonary capillary wedge pressure (PCWP) or Left-Ventricular End Diastolic Pressure (LVEDP) of ≤ 15 mmHg.
• •EV1/FVC (ratio) \> 0.70.
• •6-minute walk distance ≥ 150 meters