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ClinicalTrials.gov public records Last synced Oct 21, 2026, 8:32 AM EDT

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Showing 1–24 of 106 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: treprostinil Clear all
Completed Phase 1 Interventional

Treatment of Pulmonary Hypertension Associated COPD With Inhaled Treprostinil-1

NCT01758744
View directory record Official record
Conditions
Pulmonary Hypertension, COPD
Interventions
Inhaled Treprostinil Therapy
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
30 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
2
States / cities
Aurora, Colorado • Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 20, 2016 · Synced Oct 21, 2026, 8:32 AM EDT
Completed Phase 3 Interventional

Phase III Randomized Study of UT-15 in Patients With Primary Pulmonary Hypertension

NCT00004497
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
UT-15
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
8 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2000
U.S. locations
7
States / cities
Torrance, California • Chicago, Illinois • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2015 · Synced Oct 21, 2026, 8:32 AM EDT
Terminated Phase 3 Interventional Results available

Oral Treprostinil in Subjects With Pulmonary Hypertension Associated With Heart Failure With Preserved Ejection Fraction

NCT03037580
View directory record Official record
Conditions
Pulmonary Hypertension, Heart Failure With Preserved Ejection Fraction
Interventions
Oral treprostinil, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
82
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2020 · Synced Oct 21, 2026, 8:32 AM EDT
Terminated Phase 2 Interventional Results available

A Study of Treprostinil Palmitil Inhalation Powder (TPIP) In Pulmonary Arterial Hypertension (PAH)

NCT04791514
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil Palmitil
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 22, 2023 · Synced Oct 21, 2026, 8:32 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Relative Bioavailability After a Single Inhalation Administration of Treprostinil Palmitil Inhalation Powder (TPIP) Formulation 2 (F2) to TPIP Formulation 3 (F3) in Healthy Participants

NCT07102316
View directory record Official record
Conditions
Healthy Volunteers
Interventions
TPIP F2, TPIP F3
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Nov 21, 2025 · Synced Oct 21, 2026, 8:32 AM 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 21, 2026, 8:32 AM 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 21, 2026, 8:32 AM EDT
Completed No phase listed Observational

Study Of Right Ventricular Performance In PAH Patients Treated With Rapid Dose Treprostinil (Remodulin)

NCT02074449
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Not listed
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 17, 2016 · Synced Oct 21, 2026, 8:32 AM EDT
Completed No phase listed Observational Results available

A Study to Assess the Safety and Efficacy of Treprostinil to Facilitate Liver Transplantation in Patients With Portopulmonary Hypertension

NCT01028651
View directory record Official record
Conditions
Portopulmonary Hypertension, Pulmonary Arterial Hypertension, Pulmonary Hypertension
Interventions
Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
Not listed
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
4
States / cities
Los Angeles, California • Atlanta, Georgia • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 24, 2017 · Synced Oct 21, 2026, 8:32 AM EDT
Active, not recruiting Not applicable Interventional Results available

DelIVery for Pulmonary Arterial Hypertension (PAH) & Continued Support Study

NCT01321073
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Model 10642 Implantable Intravascular Catheter
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2032
U.S. locations
8
States / cities
Birmingham, Alabama • Los Angeles, California • Orlando, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Oct 21, 2026, 8:32 AM EDT
Completed No phase listed Observational Results available

Study of Incidence of Respiratory Tract AEs in Patients Treated With Tyvaso® Compared to Other FDA Approved PAH Therapies

NCT01266265
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
inhaled prostacyclin, prostacyclin, subcutaneous and intravenous prostacyclin, oral ERA, oral PDE5 inhibitors
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
Not listed
Enrollment
1,333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
88
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2016 · Synced Oct 21, 2026, 8:32 AM EDT
Recruiting Phase 3 Interventional

A Phase 3 Study to Evaluate the Safety and Efficacy L606 in Participants With PH-ILD

NCT07285655
View directory record Official record
Conditions
Pulmonary Hypertension Due to Lung Disease (Disorder)
Interventions
L606, Placebo
Drug
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
13
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Los Angeles, California + 10 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 21, 2026, 8:32 AM 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 21, 2026, 8:32 AM EDT
Withdrawn Phase 3 Interventional

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

NCT00760916
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
UT-15C 1 mg, UT-15C 0.25 mg, UT-15C 5 mg, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
26
States / cities
Birmingham, Alabama • Los Angeles, California • Sacramento, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2013 · Synced Oct 21, 2026, 8:32 AM EDT
Recruiting Phase 2 Interventional

Inhaled Treprostinil (Tyvaso Nebulizer) For COPD Patients With Hypoxemia

NCT07037836
View directory record Official record
Conditions
COPD (Chronic Obstructive Pulmonary Disease), Hypoxemia
Interventions
Inhaled Treprostinil (Tyvaso Nebulizer)
Drug
Lead sponsor
Bastiaan Driehuys
Other
Eligibility
40 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 21, 2026, 8:32 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Ascending Dose Study for Evaluation of Safety, Tolerability and Pharmacokinetics of L606

NCT04041648
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
L606 (Liposomal Treprostinil) Inhalation Solution 51ug, L606 Inhalation System, Placebo Solution
Drug · Device · Other
Lead sponsor
Pharmosa Biopharm Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Oct 21, 2026, 8:32 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Safety and Efficacy of Inhaled Treprostinil in Adult PH With ILD Including CPFE

NCT02630316
View directory record Official record
Conditions
Pulmonary Hypertension, Interstitial Lung Disease, Combined Pulmonary Fibrosis and Emphysema
Interventions
Inhaled Treprostinil, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
326 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
96
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 71 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2022 · Synced Oct 21, 2026, 8:32 AM EDT
Recruiting Phase 4 Interventional

Open Label Treprostinil Raynaud's Study

NCT07112183
View directory record Official record
Conditions
Raynaud's Disease, Raynaud Phenomena, Raynauds
Interventions
Oral treprostinil (UT-15C) sustained release tablets
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Oct 21, 2026, 8:32 AM EDT
Terminated Phase 2Phase 3 Interventional

Effects of Remodulin in Patients With Critical Limb Ischemia Following a Vein Bypass Graft

NCT00067041
View directory record Official record
Conditions
Peripheral Vascular Disease
Interventions
Remodulin (treprostinil sodium) Injection
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003
U.S. locations
4
States / cities
Springfield, Illinois • Worcester, Massachusetts • Albany, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2013 · Synced Oct 21, 2026, 8:32 AM 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 21, 2026, 8:32 AM EDT
Recruiting Phase 4 Interventional

A Study of Inhaled Treprostinil (LIQ861) in Adults With Pulmonary Arterial Hypertension Transitioning From Oral Selexipag

NCT07759804
View directory record Official record
Conditions
Pulmonary Arterial Hypertension (PAH)
Interventions
LIQ861 (treprostinil) inhalation powder
Combination Product
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Columbus, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 21, 2026, 8:32 AM EDT
Terminated Phase 4 Interventional Results available

Rapid Switch From Flolan to Remodulin in the Outpatient Clinic

NCT00643604
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
treprostinil sodium
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 3, 2024 · Synced Oct 21, 2026, 8:32 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

An Open Label Extension Study to Evaluate Inhaled Treprostinil in Adult PH With ILD Including CPFE

NCT02633293
View directory record Official record
Conditions
Pulmonary Hypertension, Interstitial Lung Disease, Combined Pulmonary Fibrosis and Emphysema
Interventions
Inhaled Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
243 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
91
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 67 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2022 · Synced Oct 21, 2026, 8:32 AM EDT
Terminated Not applicable Interventional Results available

Perioperative Treprostinil in Pediatric Patients Undergoing the Fontan Operation

NCT02498444
View directory record Official record
Conditions
Single Ventricle
Interventions
Treprostinil
Drug
Lead sponsor
Stanford University
Other
Eligibility
1 Year to 18 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 31, 2022 · Synced Oct 21, 2026, 8:32 AM EDT