# An Open-Label, Long-Term Study of Oral Treprostinil in Subjects With Pulmonary Arterial Hypertension

> **NCT01560637** · PHASE3 · COMPLETED · sponsor: **United Therapeutics** · enrollment: 471 (actual)

## Conditions studied

- Pulmonary Arterial Hypertension

## Interventions

- **DRUG:** UT-15C (treprostinil diolamine)

## Key facts

- **NCT ID:** NCT01560637
- **Lead sponsor:** United Therapeutics
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2013-09-11
- **Primary completion:** 2021-08-12
- **Final completion:** 2021-08-12
- **Target enrollment:** 471 (ACTUAL)
- **Last updated:** 2022-06-02


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01560637

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01560637, "An Open-Label, Long-Term Study of Oral Treprostinil in Subjects With Pulmonary Arterial Hypertension". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT01560637. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*