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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Primary Pulmonary Hypertension Clear all
Terminated Phase 3 Interventional Results available

Extension to QTI571A2301 to Evaluate the Long-term Safety, Tolerability and Efficacy of Imatinib in Severe Pulmonary Arterial Hypertension (PAH)

NCT01117987
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Imatinib, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
19
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 16 more
Source: ClinicalTrials.gov public record
Updated Aug 12, 2015 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 2 Interventional

Safety and Effectiveness of PRX-08066 in Patients With Pulmonary Hypertension and Chronic Obstructive Pulmonary Disease

NCT00345774
View directory record Official record
Conditions
Pulmonary Hypertension, Chronic Obstructive Pulmonary Disease
Interventions
PRX-08066
Drug
Lead sponsor
Epix Pharmaceuticals, Inc.
Industry
Eligibility
25 Years to 79 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
19
States / cities
Anniston, Alabama • Phoenix, Arizona • Sacramento, California + 14 more
Source: ClinicalTrials.gov public record
Updated May 28, 2008 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Results available

A Study of Tadalafil in Pediatric Participants With Pulmonary Arterial Hypertension (PAH)

NCT01824290
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
Tadalafil, Placebo, ERA as specific PAH treatment
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
6 Months to 17 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
7
States / cities
Atlanta, Georgia • Detroit, Michigan • Cincinnati, Ohio + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 2 Interventional

Vardenafil Inhaled for Pulmonary Arterial Hypertension PRN Phase 2B Study

NCT04266197
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Drug: RT234 - vardenafil inhalation powder; Device: Axially Oscillating Sphere dry powder inhaler (AOS DPI)
Combination Product
Lead sponsor
Respira Therapeutics, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
26
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 22 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Jun 7, 2026, 11:42 PM EDT
Not listed Phase 1 Interventional

A Study of GMA301 in Subjects With Pulmonary Arterial Hypertension

NCT04503733
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Q4W GMA301 IV injections (300 mg), Q4W GMA301 IV injections (600 mg), Q4W GMA301 IV injections (1000 mg), Q4W GMA301 IV injections (1800 mg), Q4W placebo IV injections
Drug · Other
Lead sponsor
Gmax Biopharm LLC.
Industry
Eligibility
18 Years to 75 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 13, 2022 · Synced Jun 7, 2026, 11:42 PM EDT
Terminated Phase 3 Interventional

A Study of Ralinepag to Evaluate Effects on Exercise Capacity by CPET in Subjects With WHO Group 1 PH

NCT04084678
View directory record Official record
Conditions
PAH, Pulmonary Hypertension, Hypertension, Connective Tissue Disease, Familial Primary Pulmonary Hypertension, Vascular Diseases, Cardiovascular Diseases, Hypertension, Pulmonary, Lung Diseases, Respiratory Tract Disease, Pulmonary Arterial Hypertension
Interventions
Ralinepag, Placebo
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
5
States / cities
Tucson, Arizona • Aurora, Colorado • Denver, Colorado + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2023 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 4 Interventional Results available

Assess the Efficacy and Safety of Sildenafil When Added to Bosentan in the Treatment of Pulmonary Arterial Hypertension

NCT00323297
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Bosentan, Placebo, Sildenafil Citrate
Drug · Other
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
6
States / cities
Los Angeles, California • Detroit, Michigan • Pittsburgh, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 31, 2021 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 2 Interventional

Study in Subjects With PAH and PH Secondary to IPF Using Inhaled GeNOsyl.

NCT01265888
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Idiopathic Pulmonary Fibrosis
Interventions
Inhaled Nitric Oxide
Drug
Lead sponsor
Geno LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
10
States / cities
Birmingham, Alabama • Los Angeles, California • Sacramento, California + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2016 · Synced Jun 7, 2026, 11:42 PM EDT
Recruiting Not applicable Interventional

The MObile Health InterVEntion in Pulmonary Arterial Hypertension (MOVE PAH) Study

NCT05464095
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
mHealth Intervention, Usual Care
Device
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 13, 2025 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 2 Interventional Results available

FK506 (Tacrolimus) in Pulmonary Arterial Hypertension

NCT01647945
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Placebo, FK506 level < 2 ng/ml, FK506 level 2-3 ng/ml, FK506 level 3-5 ng/ml
Drug
Lead sponsor
Edda Spiekerkoetter
Other
Eligibility
18 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 4, 2016 · Synced Jun 7, 2026, 11:42 PM EDT
Not listed Not applicable Interventional

Utility of At-home Monitoring of Exercise Capacity by App-based 6-minute Walk Test

NCT03893500
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Home-based 6 minute walk test
Device
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 2, 2024 · Synced Jun 7, 2026, 11:42 PM EDT
Active, not recruiting Phase 2 Interventional

Oral Ifetroban to Treat Diffuse Cutaneous Systemic Sclerosis (SSc) or SSc-associated Pulmonary Arterial Hypertension

NCT02682511
View directory record Official record
Conditions
Scleroderma, Diffuse, Scleroderma, Systemic, Scleroderma, Limited, Sclerosis, Progressive Systemic, Skin Diseases, Connective Tissue Diseases, Pathologic Processes, Autoimmune Diseases
Interventions
Oral Ifetroban, Oral Placebo
Drug
Lead sponsor
Cumberland Pharmaceuticals
Industry
Eligibility
18 Years to 80 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
10
States / cities
Tucson, Arizona • Los Angeles, California • Weston, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Results available

Comparison of Inhaled Nitric Oxide and Oxygen in Participants Reactivity During Acute Pulmonary Vasodilator Testing

NCT00626028
View directory record Official record
Conditions
Idiopathic Pulmonary Arterial Hypertension, Cardiomyopathy
Interventions
Nitric Oxide for inhalation, Oxygen, Nitric Oxide plus Oxygen
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
4 Weeks to 18 Years
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
8
States / cities
Stanford, California • Denver, Colorado • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2019 · Synced Jun 7, 2026, 11:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

MIF- Thyroxine Interactions in the Pathogenesis of Pulmonary Arterial Hypertension

NCT02858791
View directory record Official record
Conditions
Pulmonary Hypertension, Pulmonary Arterial Hypertension, Interstitial Lung Disease
Interventions
Not listed
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Jan 8, 2018 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Fluoxetine in Pulmonary Arterial Hypertension (PAH) Trial

NCT03638908
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Fluoxetine
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
16 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 25, 2020 · Synced Jun 7, 2026, 11:42 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Study of Intravenous ZMA001 in Healthy Subjects

NCT05967299
View directory record Official record
Conditions
Pulmonary Arterial Hypertension PAH
Interventions
Placebo Cohort 1 (1.5 mg/kg/dose) only, ZMA001 (BC-NKA-20008)
Other · Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 60 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Results available

Clinical Investigation Into Inhaled Treprostinil Sodium in Patients With Severe Pulmonary Arterial Hypertension (PAH)

NCT00147199
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Inhaled treprostinil, Placebo inhalation solution
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
235 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
15
States / cities
Birmingham, Alabama • Tucson, Arizona • La Jolla, California + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 1, 2024 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 2 Interventional Results available

Remodulin® to Oral Treprostinil Transition

NCT01588405
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 15, 2016 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 4 Interventional Results available

Safely Change From Bosentan to Ambrisentan in Pulmonary Hypertension

NCT01330108
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
ambrisentan
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 10, 2014 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Role of Endothelin in Pulmonary Hypertension

NCT00759408
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
BQ-123
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 85 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 26, 2018 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Not applicable Interventional Results available

A Mobile Health Intervention in Pulmonary Arterial Hypertension

NCT03069716
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Idiopathic Pulmonary Arterial Hypertension, Heritable Pulmonary Arterial Hypertension, Associated Pulmonary Arterial Hypertension
Interventions
Smartphone Text Messaging, Fitbit Charge HR
Device
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 24, 2021 · Synced Jun 7, 2026, 11:42 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional

Neuromodulation in Patients With Pulmonary Arterial Hypertension

NCT06802380
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Low-level tragus stimulation, Sham stimulation
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 90 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Jun 7, 2026, 11:42 PM EDT
Completed Phase 1 Interventional Results available

Carnitine Consumption and Augmentation in Pulmonary Arterial Hypertension

NCT04908397
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Familial Primary Pulmonary Hypertension, Primary Pulmonary Hypertension, Lung Diseases, Carnitine Nutritional Deficiency
Interventions
L-carnitine
Dietary Supplement
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Jun 7, 2026, 11:42 PM EDT
Not yet recruiting No phase listed Observational

Reverse Remodeling of the Pulmonary Vasculature: a Longitudinal, Investigational Study of the Effects of Sotatercept.

NCT07487441
View directory record Official record
Conditions
Pulmonary Arterial Hypertension (PAH), Pulmonary Hypertension
Interventions
Not listed
Lead sponsor
Franz Rischard, DO
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Jun 7, 2026, 11:42 PM EDT