Figure 2.

Mean change from baseline in 6MWD (m) by visit: TreT overall. ^aRepresentative sample data were captured from study start through July 2021. Duration on therapy is dependent on the TreT start date, and the decreasing sample size over time reflects the results for those patients who completed 51 weeks of the treatment phase and OEP; it does not represent dropouts. Not all patients have had the opportunity to reach later time points out to 51 weeks at the time of data cut. The OEP is currently ongoing. 6MWD, 6‐minute walk distance; OEP, optional extension phase; TreT, treprostinil inhalation powder.