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ClinicalTrials.gov public records Last synced Oct 23, 2026, 5:00 PM EDT

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Showing 1–24 of 82 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: UT-15 Clear all
Terminated Phase 2 Interventional Results available

Remodulin as Add-on Therapy for the Treatment of Persistent Pulmonary Hypertension of the Newborn

NCT02261883
View directory record Official record
Conditions
Persistent Pulmonary Hypertension of the Newborn
Interventions
IV Remodulin, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
1 Hour to 14 Days
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
14
States / cities
Little Rock, Arkansas • Los Angeles, California • Palo Alto, California + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2024 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 2 Interventional Results available

The Qutenza Patch as Treatment for Disabling Treprostinil (Remodulin) Infusion Site Pain

NCT01260454
View directory record Official record
Conditions
Pulmonary Hypertension, Pulmonary Arterial Hypertension
Interventions
Qutenza (8% capsaicin)
Drug
Lead sponsor
University of Rochester
Other
Eligibility
15 Years to 80 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 21, 2016 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 3 Interventional Results available

Beraprost-314d Added-on to Tyvaso® (BEAT)

NCT01908699
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Beraprost Sodium 314d Modified Release Tablets, Placebo
Drug
Lead sponsor
Lung Biotechnology PBC
Industry
Eligibility
18 Years to 80 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
69
States / cities
Birmingham, Alabama • Beverly Hills, California • Fountain Valley, California + 55 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2020 · Synced Oct 23, 2026, 5:00 PM EDT
Withdrawn Phase 2 Interventional

Telemonitoring to Treat Group 2 Pulmonary Hypertension

NCT04882774
View directory record Official record
Conditions
Pulmonary Hypertension Due to Left Heart Disease
Interventions
Treprostinil Diolamine
Drug
Lead sponsor
Mardi Gomberg -Maitland MD, MSc
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Columbus, Ohio • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 6, 2023 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 3 Interventional Results available

An Open-Label Extension Trial of UT-15C Sustained-release (SR) in Subjects With Pulmonary Arterial Hypertension

NCT01027949
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Oral Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
12 Years and older
Enrollment
894 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2020
U.S. locations
61
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated May 10, 2021 · Synced Oct 23, 2026, 5:00 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Safety and Efficacy of Perioperative Remodulin® in Orthotopic Liver Transplant Recipients

NCT01884038
View directory record Official record
Conditions
Liver Transplant
Interventions
treprostinil sodium, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 19, 2023 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Food on the Pharmacokinetics of Oral Treprostinil

NCT00963001
View directory record Official record
Conditions
Hypertension, Pulmonary, Pulmonary Arterial Hypertension
Interventions
Treprostinil diethanolamine, Standardized meals
Drug · Other
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Mar 8, 2010 · Synced Oct 23, 2026, 5:00 PM EDT
Terminated Phase 2 Interventional Results available

Pulmonary Rehab in Chronic Obstructive Pulmonary Disease (COPD): Response to Tyvaso

NCT02178566
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
Inhaled Treprostinil
Drug
Lead sponsor
Inova Health Care Services
Other
Eligibility
40 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 12, 2022 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Bioavailability Study Comparing Treprostinil Diethanolamine Oral Tablets and Oral Solution in Healthy Volunteers

NCT01172496
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2010
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 13, 2010 · Synced Oct 23, 2026, 5:00 PM EDT
Recruiting Phase 1Phase 2 Interventional

Safety and Efficacy of Treprostinil (Remodulin®) In Reducing Ischemia-Reperfusion Injury During Kidney Transplantation

NCT04005469
View directory record Official record
Conditions
Ischemia Reperfusion Injury, Delayed Graft Function
Interventions
Treprostinil
Drug
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 23, 2026, 5:00 PM EDT
Recruiting Phase 3 Interventional

Study of the Efficacy and Safety of Inhaled Treprostinil in Subjects With Progressive Pulmonary Fibrosis (TETON-PPF)

NCT05943535
View directory record Official record
Conditions
Progressive Pulmonary Fibrosis, Interstitial Lung Disease
Interventions
Placebo, Inhaled Treprostinil, Treprostinil Ultrasonic Nebulizer
Drug · Device
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
698 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
74
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 60 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 2 Interventional Results available

Digital Ischemic Lesions in Scleroderma Treated With Oral Treprostinil Diethanolamine

NCT00775463
View directory record Official record
Conditions
Systemic Sclerosis, Scleroderma
Interventions
treprostinil diethanolamine, placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
24
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 21 more
Source: ClinicalTrials.gov public record
Updated Dec 28, 2023 · Synced Oct 23, 2026, 5:00 PM EDT
Recruiting Phase 3 Interventional

Trial to Evaluate Parenteral Treprostinil and Riociguat on Right Ventriculo-vascular Coupling and Morphology in Those With Advanced PAH

NCT04062565
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Injectable Product, Riociguat Pill
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 20, 2025 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 4 Interventional Results available

Safety Evaluation of Inhaled Treprostinil Administration Following Transition From Inhaled Ventavis in Pulmonary Arterial Hypertension (PAH) Subjects

NCT00741819
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Inhaled treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
15
States / cities
Birmingham, Alabama • La Jolla, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2013 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 3 Interventional Results available

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

NCT01560637
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C (treprostinil diolamine)
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
471 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
38
States / cities
Phoenix, Arizona • Tucson, Arizona • Fresno, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2022 · Synced Oct 23, 2026, 5:00 PM EDT
Terminated Phase 3 Interventional Results available

A Phase 3 Adaptive Study to Evaluate the Safety and Efficacy of Inhaled Treprostinil in Participants With Pulmonary Hypertension (PH) Due to Chronic Obstructive Pulmonary Disease (COPD)

NCT03496623
View directory record Official record
Conditions
Pulmonary Hypertension, Chronic Obstructive Pulmonary Disease
Interventions
Inhaled treprostinil solution, Placebo solution
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
65
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 53 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2023 · Synced Oct 23, 2026, 5:00 PM EDT
Active, not recruiting No phase listed Observational

ADAPT - A Patient Registry of the Real-world Use of Orenitram®

NCT03045029
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Oral treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
41
States / cities
Fresno, California • Los Angeles, California • San Juan Capistrano, California + 37 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 3 Interventional Results available

FREEDOM-C: Oral Treprostinil in Combination With an Endothelin Receptor Antagonist (ERA) and/or a Phosphodiesterase-5 (PDE-5) Inhibitor for the Treatment of Pulmonary Arterial Hypertension (PAH)

NCT00325442
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Oral treprostinil (UT-15C) sustained release tablets, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
12 Years to 70 Years
Enrollment
354 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
39
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 31 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 4 Interventional Results available

A 48-week Study of the Effect of Dual Therapy (Inhaled Treprostinil and Tadafafil) Versus Monotherapy (Tadalafil).

NCT01305252
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
treprostinil inhalations, tadalafil
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 69 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
2
States / cities
Stanford, California • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 2, 2017 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Three Times Daily Dosing of UT-15C

NCT01746485
View directory record Official record
Conditions
Healthy
Interventions
UT-15C
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 12, 2012 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 3 Interventional Results available

Phase III Clinical Worsening Study of UT-15C in Subjects With PAH Receiving Background Oral Monotherapy

NCT01560624
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Diolamine, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
690 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
40
States / cities
Phoenix, Arizona • Tucson, Arizona • Fresno, California + 33 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2020 · Synced Oct 23, 2026, 5:00 PM EDT
Completed Phase 3 Interventional Results available

FREEDOM - M: Oral Treprostinil as Monotherapy for the Treatment of Pulmonary Arterial Hypertension (PAH)

NCT00325403
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Oral treprostinil (UT-15C) Sustained Release Tablets, Placebo
Drug · Other
Lead sponsor
United Therapeutics
Industry
Eligibility
12 Years to 75 Years
Enrollment
349 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
43
States / cities
Birmingham, Alabama • Phoenix, Arizona • Fresno, California + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 3, 2024 · Synced Oct 23, 2026, 5:00 PM EDT
Completed No phase listed Observational

Tyvaso Dosing and Titration Evaluation: TyTRATE Registry

NCT01799473
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Not listed
Lead sponsor
United Therapeutics
Industry
Eligibility
Not listed
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
51
States / cities
La Jolla, California • Los Angeles, California • Pasadena, California + 45 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2015 · Synced Oct 23, 2026, 5:00 PM EDT
Terminated No phase listed Observational

Evaluate Real-World Use of Next Generation Infusion Pumps to Administer Remodulin

NCT05060315
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Remunity Pump for Remodulin
Combination Product
Lead sponsor
United Therapeutics
Industry
Eligibility
22 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Morrisville, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 16, 2025 · Synced Oct 23, 2026, 5:00 PM EDT