This is a multicenter, randomized (1:1; oral treprostinil to placebo), double-blind,
placebo-controlled study in subjects with World Health Organization (WHO) Group 2 pulmonary
hypertension (PH) associated with heart failure with preserved ejection fraction (HFpEF).
Once randomized, subjects will take the initial dose of study drug at the study site on the
day of randomization. Subjects will return to the study site for visits scheduled at Weeks 6,
12, 18, and 24. The treatment phase of the study will last approximately 24 weeks.