Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 23, 2026, 8:44 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Phase 2 Interventional Results available

Remodulin® to Oral Treprostinil Transition

NCT01588405
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C SR
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
15 Years to 80 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
6
States / cities
Phoenix, Arizona • Tucson, Arizona • St Louis, Missouri + 3 more
Conditions
Critical Limb Ischemia
Interventions
treprostinil dienthanolmine sustained release, Placebo
Drug
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
New Orleans, Louisiana
Conditions
Critical Limb Ischemia
Interventions
UT-15C SR (treprostinil diethanolamine) 1mg oral tablets
Drug
Lead sponsor
Southern Arizona Vascular Institute
Other
Eligibility
45 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
2
States / cities
Tucson, Arizona • Springfield, Illinois
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Treprostinil to Treat Interstitial Lung Disease Pulmonary Hypertension

NCT05564637
Conditions
Pulmonary Arterial Hypertension, Interstitial Lung Disease, Healthy Adults
Interventions
Treprostinil, Right Heart Catheterization (RHC) while exercising, Optional Muscle Biopsy
Drug · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Conditions
Pulmonary Arterial Hypertension
Interventions
Treprostinil, Non-Treprostinil PAH Medications
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
43 participants
Timeline
2019
U.S. locations
10
States / cities
Birmingham, Alabama • Beverly Hills, California • Santa Barbara, California + 7 more
Completed Phase 3 Interventional Results available

A Pharmacokinetic Substudy of the TDE-PH-304 Protocol

NCT01934582
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C SR, treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
12 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Rochester, New York
Conditions
Healthy Volunteers
Interventions
Treprostinil Palmitil Inhalation Powder, Placebo
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Austin, Texas
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Esomeprazole on the Pharmacokinetics of Oral Treprostinil

NCT00963027
Conditions
Hypertension, Pulmonary, Pulmonary Arterial Hypertension
Interventions
Treprostinil diethanolamine, Esomeprazole
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Austin, Texas
Conditions
Pulmonary Hypertension, Pulmonary Fibrosis
Interventions
Oral treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 79 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
7
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 4 more
Conditions
Pulmonary Arterial Hypertension
Interventions
Not listed
Lead sponsor
Jeffrey A. Feinstein
Other
Eligibility
Up to 18 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Palo Alto, California
Terminated Phase 2 Interventional Results available

Open-Label Study of Oral Treprostinil in Digital Ulcers

NCT00848107
Conditions
Systemic Sclerosis
Interventions
treprostinil diethanolamine
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
22
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 19 more
Conditions
Systemic Sclerosis, Calcinosis
Interventions
Oral treprostinil
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Palo Alto, California
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
Terminated Phase 2 Interventional Results available

Acute Effects of Inhaled Treprostinil in Fontan Patients

NCT02769624
Conditions
Congenital Heart Disease
Interventions
Treprostinil, Placebo
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Cincinnati, Ohio
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
Conditions
Healthy Volunteers
Interventions
C16TR, Placebo, Tyvaso®
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 45 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Los Angeles, California
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
Conditions
Idiopathic Pulmonary Fibrosis, Interstitial Lung Disease, Progressive Pulmonary Fibrosis
Interventions
Inhaled Treprostinil, Treprostinil Ultrasonic Nebulizer
Drug · Device
Lead sponsor
United Therapeutics
Industry
Eligibility
40 Years and older
Enrollment
1,850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
84
States / cities
Birmingham, Alabama • Franklin, Arizona • Phoenix, Arizona + 69 more
Conditions
Critical Limb Ischemia, Peripheral Vascular Disease, Foot Ulcers, Rest Leg Pain
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 – 2004
U.S. locations
7
States / cities
Tampa, Florida • Worcester, Massachusetts • Minneapolis, Minnesota + 4 more
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
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
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Food on the Pharmacokinetics of Oral Treprostinil

NCT00963001
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
Conditions
Primary Pulmonary Hypertension
Interventions
LIQ861 Inhaled Treprostinil
Drug
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
25
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 19 more
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