A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Multi-Center Clinical Study to Evaluate the Efficacy and Safety of Oral Inhalation of GB002 for the Treatment of WHO Group 1 Pulmonary Arterial hypertension (PAH)

The primary objective for this trial is to determine the effect of GB002 (seralutinib) on improving pulmonary hemodynamics in subjects with World Health Organization (WHO) Group 1 PAH who are Functional Class (FC) II and III. The secondary objective for this trial is to determine the effect of GB002 (seralutinib) on improving exercise capacity in this population.