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ClinicalTrials.gov public records Last synced Sep 11, 2026, 12:27 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
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
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
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
Conditions
Pulmonary Arterial Hypertension, Interstitial Lung Disease, Idiopathic Pulmonary Fibrosis
Interventions
Treprostinil
Drug
Lead sponsor
Rajan Saggar
Other
Eligibility
Not listed
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Pulmonary Hypertension
Interventions
UT-15C
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
9
States / cities
Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 5 more
Conditions
Pulmonary Hypertension
Interventions
UT-15C SR, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
310 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
40
States / cities
Birmingham, Alabama • Phoenix, Arizona • Fresno, California + 33 more
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
Conditions
Idiopathic Pulmonary Fibrosis, Pulmonary Hypertension
Interventions
Treprostinil sodium for inhalation
Drug
Lead sponsor
Lung Biotechnology PBC
Industry
Eligibility
35 Years to 80 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
6
States / cities
La Jolla, California • Sacramento, California • Ann Arbor, Michigan + 3 more
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
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
Conditions
Pulmonary Arterial Hypertension, Renal Dysfunction
Interventions
UT-15C SR (treprostinil diethanolamine)
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 79 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Orlando, Florida
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
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
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
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
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
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
Completed Phase 1 Interventional Accepts healthy volunteers

Three Times Daily Dosing of UT-15C

NCT01746485
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
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
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
Conditions
Pulmonary Arterial Hypertension
Interventions
UT-15C SR, Tyvaso Inhalation Solution
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
6
States / cities
Birmingham, Alabama • Rochester, Minnesota • St Louis, Missouri + 3 more
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
Conditions
Idiopathic Pulmonary Fibrosis, Interstitial Lung Disease
Interventions
Placebo, Inhaled Treprostinil, Treprostinil Ultrasonic Nebulizer
Drug · Device
Lead sponsor
United Therapeutics
Industry
Eligibility
40 Years and older
Enrollment
598 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
90
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 73 more
Conditions
Pulmonary Arterial Hypertension
Interventions
treprostinil, Crono Five ambulatory pump
Drug · Device
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
3
States / cities
San Francisco, California • New York, New York • Oklahoma City, Oklahoma